update v1.0.7.9 R.C.

This is a Release Candidate. We are still testing.

vendor/zendframework/zend-http/src/AbstractMessage.php

@@ -0,0 +1,105 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http;
+
+use Zend\Stdlib\Message;
+
+/**
+ * HTTP standard message (Request/Response)
+ *
+ * @link      http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4
+ */
+abstract class AbstractMessage extends Message
+{
+    /**#@+
+     * @const string Version constant numbers
+     */
+    const VERSION_10 = '1.0';
+    const VERSION_11 = '1.1';
+    /**#@-*/
+
+    /**
+     * @var string
+     */
+    protected $version = self::VERSION_11;
+
+    /**
+     * @var Headers|null
+     */
+    protected $headers = null;
+
+    /**
+     * Set the HTTP version for this object, one of 1.0 or 1.1
+     * (AbstractMessage::VERSION_10, AbstractMessage::VERSION_11)
+     *
+     * @param  string $version (Must be 1.0 or 1.1)
+     * @return AbstractMessage
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setVersion($version)
+    {
+        if ($version != self::VERSION_10 && $version != self::VERSION_11) {
+            throw new Exception\InvalidArgumentException(
+                'Not valid or not supported HTTP version: ' . $version
+            );
+        }
+        $this->version = $version;
+        return $this;
+    }
+
+    /**
+     * Return the HTTP version for this request
+     *
+     * @return string
+     */
+    public function getVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * Provide an alternate Parameter Container implementation for headers in this object,
+     * (this is NOT the primary API for value setting, for that see getHeaders())
+     *
+     * @see    getHeaders()
+     * @param  Headers $headers
+     * @return AbstractMessage
+     */
+    public function setHeaders(Headers $headers)
+    {
+        $this->headers = $headers;
+        return $this;
+    }
+
+    /**
+     * Return the header container responsible for headers
+     *
+     * @return Headers
+     */
+    public function getHeaders()
+    {
+        if ($this->headers === null || is_string($this->headers)) {
+            // this is only here for fromString lazy loading
+            $this->headers = (is_string($this->headers)) ? Headers::fromString($this->headers) : new Headers();
+        }
+
+        return $this->headers;
+    }
+
+    /**
+     * Allow PHP casting of this object
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+}

vendor/zendframework/zend-http/src/Client/Adapter/AdapterInterface.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+/**
+ * An interface description for Zend\Http\Client\Adapter classes.
+ *
+ * These classes are used as connectors for Zend\Http\Client, performing the
+ * tasks of connecting, writing, reading and closing connection to the server.
+ */
+interface AdapterInterface
+{
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param array $options
+     */
+    public function setOptions($options = []);
+
+    /**
+     * Connect to the remote server
+     *
+     * @param string  $host
+     * @param int     $port
+     * @param  bool $secure
+     */
+    public function connect($host, $port = 80, $secure = false);
+
+    /**
+     * Send request to the remote server
+     *
+     * @param string        $method
+     * @param \Zend\Uri\Uri $url
+     * @param string        $httpVer
+     * @param array         $headers
+     * @param string        $body
+     * @return string Request as text
+     */
+    public function write($method, $url, $httpVer = '1.1', $headers = [], $body = '');
+
+    /**
+     * Read response from server
+     *
+     * @return string
+     */
+    public function read();
+
+    /**
+     * Close the connection to the server
+     *
+     */
+    public function close();
+}

vendor/zendframework/zend-http/src/Client/Adapter/Curl.php

@@ -0,0 +1,527 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+use Traversable;
+use Zend\Http\Client\Adapter\AdapterInterface as HttpAdapter;
+use Zend\Http\Client\Adapter\Exception as AdapterException;
+use Zend\Stdlib\ArrayUtils;
+
+/**
+ * An adapter class for Zend\Http\Client based on the curl extension.
+ * Curl requires libcurl. See for full requirements the PHP manual: http://php.net/curl
+ */
+class Curl implements HttpAdapter, StreamInterface
+{
+    /**
+     * Parameters array
+     *
+     * @var array
+     */
+    protected $config = [];
+
+    /**
+     * What host/port are we connected to?
+     *
+     * @var array
+     */
+    protected $connectedTo = [null, null];
+
+    /**
+     * The curl session handle
+     *
+     * @var resource|null
+     */
+    protected $curl = null;
+
+    /**
+     * List of cURL options that should never be overwritten
+     *
+     * @var array
+     */
+    protected $invalidOverwritableCurlOptions;
+
+    /**
+     * Response gotten from server
+     *
+     * @var string
+     */
+    protected $response = null;
+
+    /**
+     * Stream for storing output
+     *
+     * @var resource
+     */
+    protected $outputStream;
+
+    /**
+     * Adapter constructor
+     *
+     * Config is set using setOptions()
+     *
+     * @throws AdapterException\InitializationException
+     */
+    public function __construct()
+    {
+        if (!extension_loaded('curl')) {
+            throw new AdapterException\InitializationException(
+                'cURL extension has to be loaded to use this Zend\Http\Client adapter'
+            );
+        }
+        $this->invalidOverwritableCurlOptions = [
+            CURLOPT_HTTPGET,
+            CURLOPT_POST,
+            CURLOPT_UPLOAD,
+            CURLOPT_CUSTOMREQUEST,
+            CURLOPT_HEADER,
+            CURLOPT_RETURNTRANSFER,
+            CURLOPT_HTTPHEADER,
+            CURLOPT_INFILE,
+            CURLOPT_INFILESIZE,
+            CURLOPT_PORT,
+            CURLOPT_MAXREDIRS,
+            CURLOPT_CONNECTTIMEOUT,
+        ];
+    }
+
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param  array|Traversable $options
+     * @return Curl
+     * @throws AdapterException\InvalidArgumentException
+     */
+    public function setOptions($options = [])
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+        if (!is_array($options)) {
+            throw new AdapterException\InvalidArgumentException(
+                'Array or Traversable object expected, got ' . gettype($options)
+            );
+        }
+
+        /** Config Key Normalization */
+        foreach ($options as $k => $v) {
+            unset($options[$k]); // unset original value
+            $options[str_replace(['-', '_', ' ', '.'], '', strtolower($k))] = $v; // replace w/ normalized
+        }
+
+        if (isset($options['proxyuser']) && isset($options['proxypass'])) {
+            $this->setCurlOption(CURLOPT_PROXYUSERPWD, $options['proxyuser'] . ":" . $options['proxypass']);
+            unset($options['proxyuser'], $options['proxypass']);
+        }
+
+        if (isset($options['sslverifypeer'])) {
+            $this->setCurlOption(CURLOPT_SSL_VERIFYPEER, $options['sslverifypeer']);
+            unset($options['sslverifypeer']);
+        }
+
+        foreach ($options as $k => $v) {
+            $option = strtolower($k);
+            switch ($option) {
+                case 'proxyhost':
+                    $this->setCurlOption(CURLOPT_PROXY, $v);
+                    break;
+                case 'proxyport':
+                    $this->setCurlOption(CURLOPT_PROXYPORT, $v);
+                    break;
+                default:
+                    if (is_array($v) && isset($this->config[$option]) && is_array($this->config[$option])) {
+                        $v = ArrayUtils::merge($this->config[$option], $v);
+                    }
+                    $this->config[$option] = $v;
+                    break;
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Retrieve the array of all configuration options
+     *
+     * @return array
+     */
+    public function getConfig()
+    {
+        return $this->config;
+    }
+
+    /**
+     * Direct setter for cURL adapter related options.
+     *
+     * @param  string|int $option
+     * @param  mixed $value
+     * @return Curl
+     */
+    public function setCurlOption($option, $value)
+    {
+        if (!isset($this->config['curloptions'])) {
+            $this->config['curloptions'] = [];
+        }
+        $this->config['curloptions'][$option] = $value;
+        return $this;
+    }
+
+    /**
+     * Initialize curl
+     *
+     * @param  string  $host
+     * @param  int     $port
+     * @param  bool $secure
+     * @return void
+     * @throws AdapterException\RuntimeException if unable to connect
+     */
+    public function connect($host, $port = 80, $secure = false)
+    {
+        // If we're already connected, disconnect first
+        if ($this->curl) {
+            $this->close();
+        }
+
+        // Do the actual connection
+        $this->curl = curl_init();
+        if ($port != 80) {
+            curl_setopt($this->curl, CURLOPT_PORT, intval($port));
+        }
+
+        if (isset($this->config['timeout'])) {
+            if (defined('CURLOPT_CONNECTTIMEOUT_MS')) {
+                curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT_MS, $this->config['timeout'] * 1000);
+            } else {
+                curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, $this->config['timeout']);
+            }
+
+            if (defined('CURLOPT_TIMEOUT_MS')) {
+                curl_setopt($this->curl, CURLOPT_TIMEOUT_MS, $this->config['timeout'] * 1000);
+            } else {
+                curl_setopt($this->curl, CURLOPT_TIMEOUT, $this->config['timeout']);
+            }
+        }
+
+        if (isset($this->config['maxredirects'])) {
+            // Set Max redirects
+            curl_setopt($this->curl, CURLOPT_MAXREDIRS, $this->config['maxredirects']);
+        }
+
+        if (!$this->curl) {
+            $this->close();
+
+            throw new AdapterException\RuntimeException('Unable to Connect to ' . $host . ':' . $port);
+        }
+
+        if ($secure !== false) {
+            // Behave the same like Zend\Http\Adapter\Socket on SSL options.
+            if (isset($this->config['sslcert'])) {
+                curl_setopt($this->curl, CURLOPT_SSLCERT, $this->config['sslcert']);
+            }
+            if (isset($this->config['sslpassphrase'])) {
+                curl_setopt($this->curl, CURLOPT_SSLCERTPASSWD, $this->config['sslpassphrase']);
+            }
+        }
+
+        // Update connected_to
+        $this->connectedTo = [$host, $port];
+    }
+
+    /**
+     * Send request to the remote server
+     *
+     * @param  string        $method
+     * @param  \Zend\Uri\Uri $uri
+     * @param  float         $httpVersion
+     * @param  array         $headers
+     * @param  string        $body
+     * @return string        $request
+     * @throws AdapterException\RuntimeException If connection fails, connected
+     *     to wrong host, no PUT file defined, unsupported method, or unsupported
+     *     cURL option.
+     * @throws AdapterException\InvalidArgumentException if $method is currently not supported
+     */
+    public function write($method, $uri, $httpVersion = 1.1, $headers = [], $body = '')
+    {
+        // Make sure we're properly connected
+        if (!$this->curl) {
+            throw new AdapterException\RuntimeException("Trying to write but we are not connected");
+        }
+
+        if ($this->connectedTo[0] != $uri->getHost() || $this->connectedTo[1] != $uri->getPort()) {
+            throw new AdapterException\RuntimeException("Trying to write but we are connected to the wrong host");
+        }
+
+        // set URL
+        curl_setopt($this->curl, CURLOPT_URL, $uri->__toString());
+
+        // ensure correct curl call
+        $curlValue = true;
+        switch ($method) {
+            case 'GET':
+                $curlMethod = CURLOPT_HTTPGET;
+                break;
+
+            case 'POST':
+                $curlMethod = CURLOPT_POST;
+                break;
+
+            case 'PUT':
+                // There are two different types of PUT request, either a Raw Data string has been set
+                // or CURLOPT_INFILE and CURLOPT_INFILESIZE are used.
+                if (is_resource($body)) {
+                    $this->config['curloptions'][CURLOPT_INFILE] = $body;
+                }
+                if (isset($this->config['curloptions'][CURLOPT_INFILE])) {
+                    // Now we will probably already have Content-Length set, so that we have to delete it
+                    // from $headers at this point:
+                    if (!isset($headers['Content-Length'])
+                        && !isset($this->config['curloptions'][CURLOPT_INFILESIZE])
+                    ) {
+                        throw new AdapterException\RuntimeException(
+                            'Cannot set a file-handle for cURL option CURLOPT_INFILE'
+                            . ' without also setting its size in CURLOPT_INFILESIZE.'
+                        );
+                    }
+
+                    if (isset($headers['Content-Length'])) {
+                        $this->config['curloptions'][CURLOPT_INFILESIZE] = (int) $headers['Content-Length'];
+                        unset($headers['Content-Length']);
+                    }
+
+                    if (is_resource($body)) {
+                        $body = '';
+                    }
+
+                    $curlMethod = CURLOPT_UPLOAD;
+                } else {
+                    $curlMethod = CURLOPT_CUSTOMREQUEST;
+                    $curlValue = "PUT";
+                }
+                break;
+
+            case 'PATCH':
+                $curlMethod = CURLOPT_CUSTOMREQUEST;
+                $curlValue = "PATCH";
+                break;
+
+            case 'DELETE':
+                $curlMethod = CURLOPT_CUSTOMREQUEST;
+                $curlValue = "DELETE";
+                break;
+
+            case 'OPTIONS':
+                $curlMethod = CURLOPT_CUSTOMREQUEST;
+                $curlValue = "OPTIONS";
+                break;
+
+            case 'TRACE':
+                $curlMethod = CURLOPT_CUSTOMREQUEST;
+                $curlValue = "TRACE";
+                break;
+
+            case 'HEAD':
+                $curlMethod = CURLOPT_CUSTOMREQUEST;
+                $curlValue = "HEAD";
+                break;
+
+            default:
+                // For now, through an exception for unsupported request methods
+                throw new AdapterException\InvalidArgumentException("Method '$method' currently not supported");
+        }
+
+        if (is_resource($body) && $curlMethod != CURLOPT_UPLOAD) {
+            throw new AdapterException\RuntimeException("Streaming requests are allowed only with PUT");
+        }
+
+        // get http version to use
+        $curlHttp = ($httpVersion == 1.1) ? CURL_HTTP_VERSION_1_1 : CURL_HTTP_VERSION_1_0;
+
+        // mark as HTTP request and set HTTP method
+        curl_setopt($this->curl, CURLOPT_HTTP_VERSION, $curlHttp);
+        curl_setopt($this->curl, $curlMethod, $curlValue);
+
+        // Set the CURLINFO_HEADER_OUT flag so that we can retrieve the full request string later
+        curl_setopt($this->curl, CURLINFO_HEADER_OUT, true);
+
+        if ($this->outputStream) {
+            // headers will be read into the response
+            curl_setopt($this->curl, CURLOPT_HEADER, false);
+            curl_setopt($this->curl, CURLOPT_HEADERFUNCTION, [$this, "readHeader"]);
+            // and data will be written into the file
+            curl_setopt($this->curl, CURLOPT_FILE, $this->outputStream);
+        } else {
+            // ensure headers are also returned
+            curl_setopt($this->curl, CURLOPT_HEADER, true);
+
+            // ensure actual response is returned
+            curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
+        }
+
+        // Treating basic auth headers in a special way
+        if (array_key_exists('Authorization', $headers) && 'Basic' == substr($headers['Authorization'], 0, 5)) {
+            curl_setopt($this->curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
+            curl_setopt($this->curl, CURLOPT_USERPWD, base64_decode(substr($headers['Authorization'], 6)));
+            unset($headers['Authorization']);
+        }
+
+        // set additional headers
+        if (!isset($headers['Accept'])) {
+            $headers['Accept'] = '';
+        }
+        $curlHeaders = [];
+        foreach ($headers as $key => $value) {
+            $curlHeaders[] = $key . ': ' . $value;
+        }
+
+        curl_setopt($this->curl, CURLOPT_HTTPHEADER, $curlHeaders);
+
+        /**
+         * Make sure POSTFIELDS is set after $curlMethod is set:
+         * @link http://de2.php.net/manual/en/function.curl-setopt.php#81161
+         */
+        if (in_array($method, ['POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'], true)) {
+            curl_setopt($this->curl, CURLOPT_POSTFIELDS, $body);
+        } elseif ($curlMethod == CURLOPT_UPLOAD) {
+            // this covers a PUT by file-handle:
+            // Make the setting of this options explicit (rather than setting it through the loop following a bit lower)
+            // to group common functionality together.
+            curl_setopt($this->curl, CURLOPT_INFILE, $this->config['curloptions'][CURLOPT_INFILE]);
+            curl_setopt($this->curl, CURLOPT_INFILESIZE, $this->config['curloptions'][CURLOPT_INFILESIZE]);
+            unset($this->config['curloptions'][CURLOPT_INFILE]);
+            unset($this->config['curloptions'][CURLOPT_INFILESIZE]);
+        }
+
+        // set additional curl options
+        if (isset($this->config['curloptions'])) {
+            foreach ((array) $this->config['curloptions'] as $k => $v) {
+                if (!in_array($k, $this->invalidOverwritableCurlOptions)) {
+                    if (curl_setopt($this->curl, $k, $v) == false) {
+                        throw new AdapterException\RuntimeException(sprintf(
+                            'Unknown or erroreous cURL option "%s" set',
+                            $k
+                        ));
+                    }
+                }
+            }
+        }
+
+        // send the request
+
+        $response = curl_exec($this->curl);
+        // if we used streaming, headers are already there
+        if (!is_resource($this->outputStream)) {
+            $this->response = $response;
+        }
+
+        $request  = curl_getinfo($this->curl, CURLINFO_HEADER_OUT);
+        $request .= $body;
+
+        if (empty($this->response)) {
+            throw new AdapterException\RuntimeException("Error in cURL request: " . curl_error($this->curl));
+        }
+
+        // separating header from body because it is dangerous to accidentially replace strings in the body
+        $responseHeaderSize = curl_getinfo($this->curl, CURLINFO_HEADER_SIZE);
+        $responseHeaders = substr($this->response, 0, $responseHeaderSize);
+
+        // cURL automatically decodes chunked-messages, this means we have to
+        // disallow the Zend\Http\Response to do it again.
+        $responseHeaders = preg_replace("/Transfer-Encoding:\s*chunked\\r\\n/", "", $responseHeaders);
+
+        // cURL can automatically handle content encoding; prevent double-decoding from occurring
+        if (isset($this->config['curloptions'][CURLOPT_ENCODING])
+            && '' == $this->config['curloptions'][CURLOPT_ENCODING]
+        ) {
+            $responseHeaders = preg_replace("/Content-Encoding:\s*gzip\\r\\n/", '', $responseHeaders);
+        }
+
+        // cURL automatically handles Proxy rewrites, remove the "HTTP/1.0 200 Connection established" string:
+        $responseHeaders = preg_replace(
+            "/HTTP\/1.0\s*200\s*Connection\s*established\\r\\n\\r\\n/",
+            '',
+            $responseHeaders
+        );
+
+        // replace old header with new, cleaned up, header
+        $this->response = substr_replace($this->response, $responseHeaders, 0, $responseHeaderSize);
+
+        // Eliminate multiple HTTP responses.
+        do {
+            $parts = preg_split('|(?:\r?\n){2}|m', $this->response, 2);
+            $again = false;
+
+            if (isset($parts[1]) && preg_match("|^HTTP/1\.[01](.*?)\r\n|mi", $parts[1])) {
+                $this->response = $parts[1];
+                $again          = true;
+            }
+        } while ($again);
+
+        return $request;
+    }
+
+    /**
+     * Return read response from server
+     *
+     * @return string
+     */
+    public function read()
+    {
+        return $this->response;
+    }
+
+    /**
+     * Close the connection to the server
+     *
+     */
+    public function close()
+    {
+        if (is_resource($this->curl)) {
+            curl_close($this->curl);
+        }
+        $this->curl         = null;
+        $this->connectedTo = [null, null];
+    }
+
+    /**
+     * Get cUrl Handle
+     *
+     * @return resource
+     */
+    public function getHandle()
+    {
+        return $this->curl;
+    }
+
+    /**
+     * Set output stream for the response
+     *
+     * @param resource $stream
+     * @return Curl
+     */
+    public function setOutputStream($stream)
+    {
+        $this->outputStream = $stream;
+        return $this;
+    }
+
+    /**
+     * Header reader function for CURL
+     *
+     * @param resource $curl
+     * @param string $header
+     * @return int
+     */
+    public function readHeader($curl, $header)
+    {
+        $this->response .= $header;
+        return strlen($header);
+    }
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/ExceptionInterface.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+use Zend\Http\Client\Exception\ExceptionInterface as HttpClientException;
+
+interface ExceptionInterface extends HttpClientException
+{
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/InitializationException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+/**
+ */
+class InitializationException extends RuntimeException
+{
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/InvalidArgumentException.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+use Zend\Http\Client\Exception;
+
+/**
+ */
+class InvalidArgumentException extends Exception\InvalidArgumentException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/OutOfRangeException.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+use Zend\Http\Client\Exception;
+
+/**
+ */
+class OutOfRangeException extends Exception\OutOfRangeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/RuntimeException.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+use Zend\Http\Client\Exception;
+
+/**
+ */
+class RuntimeException extends Exception\RuntimeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Client/Adapter/Exception/TimeoutException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter\Exception;
+
+/**
+ */
+class TimeoutException extends RuntimeException implements ExceptionInterface
+{
+    const READ_TIMEOUT = 1000;
+}

vendor/zendframework/zend-http/src/Client/Adapter/Proxy.php

@@ -0,0 +1,294 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+use Zend\Http\Client;
+use Zend\Http\Client\Adapter\Exception as AdapterException;
+use Zend\Http\Response;
+use Zend\Stdlib\ErrorHandler;
+
+/**
+ * HTTP Proxy-supporting Zend\Http\Client adapter class, based on the default
+ * socket based adapter.
+ *
+ * Should be used if proxy HTTP access is required. If no proxy is set, will
+ * fall back to Zend\Http\Client\Adapter\Socket behavior. Just like the
+ * default Socket adapter, this adapter does not require any special extensions
+ * installed.
+ */
+class Proxy extends Socket
+{
+    /**
+     * Parameters array
+     *
+     * @var array
+     */
+    protected $config = [
+        'ssltransport'       => 'ssl',
+        'sslcert'            => null,
+        'sslpassphrase'      => null,
+        'sslverifypeer'      => true,
+        'sslcapath'          => null,
+        'sslallowselfsigned' => false,
+        'sslusecontext'      => false,
+        'proxy_host'         => '',
+        'proxy_port'         => 8080,
+        'proxy_user'         => '',
+        'proxy_pass'         => '',
+        'proxy_auth'         => Client::AUTH_BASIC,
+        'persistent'         => false
+    ];
+
+    /**
+     * Whether HTTPS CONNECT was already negotiated with the proxy or not
+     *
+     * @var bool
+     */
+    protected $negotiated = false;
+
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param array $options
+     */
+    public function setOptions($options = [])
+    {
+        //enforcing that the proxy keys are set in the form proxy_*
+        foreach ($options as $k => $v) {
+            if (preg_match("/^proxy[a-z]+/", $k)) {
+                $options['proxy_' . substr($k, 5, strlen($k))] = $v;
+                unset($options[$k]);
+            }
+        }
+
+        parent::setOptions($options);
+    }
+
+    /**
+     * Connect to the remote server
+     *
+     * Will try to connect to the proxy server. If no proxy was set, will
+     * fall back to the target server (behave like regular Socket adapter)
+     *
+     * @param string  $host
+     * @param int     $port
+     * @param  bool $secure
+     * @throws AdapterException\RuntimeException
+     */
+    public function connect($host, $port = 80, $secure = false)
+    {
+        // If no proxy is set, fall back to Socket adapter
+        if (! $this->config['proxy_host']) {
+            parent::connect($host, $port, $secure);
+            return;
+        }
+
+        /* Url might require stream context even if proxy connection doesn't */
+        if ($secure) {
+            $this->config['sslusecontext'] = true;
+        }
+
+        // Connect (a non-secure connection) to the proxy server
+        parent::connect(
+            $this->config['proxy_host'],
+            $this->config['proxy_port'],
+            false
+        );
+    }
+
+    /**
+     * Send request to the proxy server
+     *
+     * @param string        $method
+     * @param \Zend\Uri\Uri $uri
+     * @param string        $httpVer
+     * @param array         $headers
+     * @param string        $body
+     * @throws AdapterException\RuntimeException
+     * @return string Request as string
+     */
+    public function write($method, $uri, $httpVer = '1.1', $headers = [], $body = '')
+    {
+        // If no proxy is set, fall back to default Socket adapter
+        if (! $this->config['proxy_host']) {
+            return parent::write($method, $uri, $httpVer, $headers, $body);
+        }
+
+        // Make sure we're properly connected
+        if (! $this->socket) {
+            throw new AdapterException\RuntimeException("Trying to write but we are not connected");
+        }
+
+        $host = $this->config['proxy_host'];
+        $port = $this->config['proxy_port'];
+
+        if ($this->connectedTo[0] != "tcp://$host" || $this->connectedTo[1] != $port) {
+            throw new AdapterException\RuntimeException("Trying to write but we are connected to the wrong proxy server");
+        }
+
+        // Add Proxy-Authorization header
+        if ($this->config['proxy_user'] && ! isset($headers['proxy-authorization'])) {
+            $headers['proxy-authorization'] = Client::encodeAuthHeader(
+                $this->config['proxy_user'], $this->config['proxy_pass'], $this->config['proxy_auth']
+            );
+        }
+
+        // if we are proxying HTTPS, preform CONNECT handshake with the proxy
+        if ($uri->getScheme() == 'https' && (! $this->negotiated)) {
+            $this->connectHandshake($uri->getHost(), $uri->getPort(), $httpVer, $headers);
+            $this->negotiated = true;
+        }
+
+        // Save request method for later
+        $this->method = $method;
+
+        // Build request headers
+        if ($this->negotiated) {
+            $path = $uri->getPath();
+            if ($uri->getQuery()) {
+                $path .= '?' . $uri->getQuery();
+            }
+            $request = "$method $path HTTP/$httpVer\r\n";
+        } else {
+            $request = "$method $uri HTTP/$httpVer\r\n";
+        }
+
+        // Add all headers to the request string
+        foreach ($headers as $k => $v) {
+            if (is_string($k)) {
+                $v = "$k: $v";
+            }
+            $request .= "$v\r\n";
+        }
+
+        if (is_resource($body)) {
+            $request .= "\r\n";
+        } else {
+            // Add the request body
+            $request .= "\r\n" . $body;
+        }
+
+        // Send the request
+        ErrorHandler::start();
+        $test  = fwrite($this->socket, $request);
+        $error = ErrorHandler::stop();
+        if (!$test) {
+            throw new AdapterException\RuntimeException("Error writing request to proxy server", 0, $error);
+        }
+
+        if (is_resource($body)) {
+            if (stream_copy_to_stream($body, $this->socket) == 0) {
+                throw new AdapterException\RuntimeException('Error writing request to server');
+            }
+        }
+
+        return $request;
+    }
+
+    /**
+     * Preform handshaking with HTTPS proxy using CONNECT method
+     *
+     * @param string  $host
+     * @param int $port
+     * @param string  $httpVer
+     * @param array   $headers
+     * @throws AdapterException\RuntimeException
+     */
+    protected function connectHandshake($host, $port = 443, $httpVer = '1.1', array &$headers = [])
+    {
+        $request = "CONNECT $host:$port HTTP/$httpVer\r\n" .
+                   "Host: " . $host . "\r\n";
+
+        // Add the user-agent header
+        if (isset($this->config['useragent'])) {
+            $request .= "User-agent: " . $this->config['useragent'] . "\r\n";
+        }
+
+        // If the proxy-authorization header is set, send it to proxy but remove
+        // it from headers sent to target host
+        if (isset($headers['proxy-authorization'])) {
+            $request .= "Proxy-authorization: " . $headers['proxy-authorization'] . "\r\n";
+            unset($headers['proxy-authorization']);
+        }
+
+        $request .= "\r\n";
+
+        // Send the request
+        ErrorHandler::start();
+        $test  = fwrite($this->socket, $request);
+        $error = ErrorHandler::stop();
+        if (!$test) {
+            throw new AdapterException\RuntimeException("Error writing request to proxy server", 0, $error);
+        }
+
+        // Read response headers only
+        $response = '';
+        $gotStatus = false;
+        ErrorHandler::start();
+        while ($line = fgets($this->socket)) {
+            $gotStatus = $gotStatus || (strpos($line, 'HTTP') !== false);
+            if ($gotStatus) {
+                $response .= $line;
+                if (!rtrim($line)) {
+                    break;
+                }
+            }
+        }
+        ErrorHandler::stop();
+
+        // Check that the response from the proxy is 200
+        if (Response::fromString($response)->getStatusCode() != 200) {
+            throw new AdapterException\RuntimeException("Unable to connect to HTTPS proxy. Server response: " . $response);
+        }
+
+        // If all is good, switch socket to secure mode. We have to fall back
+        // through the different modes
+        $modes = [
+            STREAM_CRYPTO_METHOD_TLS_CLIENT,
+            STREAM_CRYPTO_METHOD_SSLv3_CLIENT,
+            STREAM_CRYPTO_METHOD_SSLv23_CLIENT,
+            STREAM_CRYPTO_METHOD_SSLv2_CLIENT
+        ];
+
+        $success = false;
+        foreach ($modes as $mode) {
+            $success = stream_socket_enable_crypto($this->socket, true, $mode);
+            if ($success) {
+                break;
+            }
+        }
+
+        if (! $success) {
+            throw new AdapterException\RuntimeException("Unable to connect to" .
+                    " HTTPS server through proxy: could not negotiate secure connection.");
+        }
+    }
+
+    /**
+     * Close the connection to the server
+     *
+     */
+    public function close()
+    {
+        parent::close();
+        $this->negotiated = false;
+    }
+
+    /**
+     * Destructor: make sure the socket is disconnected
+     *
+     */
+    public function __destruct()
+    {
+        if ($this->socket) {
+            $this->close();
+        }
+    }
+}

vendor/zendframework/zend-http/src/Client/Adapter/Socket.php

@@ -0,0 +1,634 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+use Traversable;
+use Zend\Http\Client\Adapter\AdapterInterface as HttpAdapter;
+use Zend\Http\Client\Adapter\Exception as AdapterException;
+use Zend\Http\Response;
+use Zend\Stdlib\ArrayUtils;
+use Zend\Stdlib\ErrorHandler;
+
+/**
+ * A sockets based (stream\socket\client) adapter class for Zend\Http\Client. Can be used
+ * on almost every PHP environment, and does not require any special extensions.
+ */
+class Socket implements HttpAdapter, StreamInterface
+{
+    /**
+     * Map SSL transport wrappers to stream crypto method constants
+     *
+     * @var array
+     */
+    protected static $sslCryptoTypes = [
+        'ssl'   => STREAM_CRYPTO_METHOD_SSLv23_CLIENT,
+        'sslv2' => STREAM_CRYPTO_METHOD_SSLv2_CLIENT,
+        'sslv3' => STREAM_CRYPTO_METHOD_SSLv3_CLIENT,
+        'tls'   => STREAM_CRYPTO_METHOD_TLS_CLIENT,
+    ];
+
+    /**
+     * The socket for server connection
+     *
+     * @var resource|null
+     */
+    protected $socket = null;
+
+    /**
+     * What host/port are we connected to?
+     *
+     * @var array
+     */
+    protected $connectedTo = [null, null];
+
+    /**
+     * Stream for storing output
+     *
+     * @var resource
+     */
+    protected $outStream = null;
+
+    /**
+     * Parameters array
+     *
+     * @var array
+     */
+    protected $config = [
+        'persistent'            => false,
+        'ssltransport'          => 'ssl',
+        'sslcert'               => null,
+        'sslpassphrase'         => null,
+        'sslverifypeer'         => true,
+        'sslcafile'             => null,
+        'sslcapath'             => null,
+        'sslallowselfsigned'    => false,
+        'sslusecontext'         => false,
+    ];
+
+    /**
+     * Request method - will be set by write() and might be used by read()
+     *
+     * @var string
+     */
+    protected $method = null;
+
+    /**
+     * Stream context
+     *
+     * @var resource
+     */
+    protected $context = null;
+
+    /**
+     * Adapter constructor, currently empty. Config is set using setOptions()
+     *
+     */
+    public function __construct()
+    {
+    }
+
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param  array|Traversable $options
+     * @throws AdapterException\InvalidArgumentException
+     */
+    public function setOptions($options = [])
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+        if (!is_array($options)) {
+            throw new AdapterException\InvalidArgumentException(
+                'Array or Zend\Config object expected, got ' . gettype($options)
+            );
+        }
+
+        foreach ($options as $k => $v) {
+            $this->config[strtolower($k)] = $v;
+        }
+    }
+
+    /**
+     * Retrieve the array of all configuration options
+     *
+     * @return array
+     */
+    public function getConfig()
+    {
+        return $this->config;
+    }
+
+    /**
+     * Set the stream context for the TCP connection to the server
+     *
+     * Can accept either a pre-existing stream context resource, or an array
+     * of stream options, similar to the options array passed to the
+     * stream_context_create() PHP function. In such case a new stream context
+     * will be created using the passed options.
+     *
+     * @since  Zend Framework 1.9
+     *
+     * @param  mixed $context Stream context or array of context options
+     * @throws Exception\InvalidArgumentException
+     * @return Socket
+     */
+    public function setStreamContext($context)
+    {
+        if (is_resource($context) && get_resource_type($context) == 'stream-context') {
+            $this->context = $context;
+        } elseif (is_array($context)) {
+            $this->context = stream_context_create($context);
+        } else {
+            // Invalid parameter
+            throw new AdapterException\InvalidArgumentException(
+                "Expecting either a stream context resource or array, got " . gettype($context)
+            );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the stream context for the TCP connection to the server.
+     *
+     * If no stream context is set, will create a default one.
+     *
+     * @return resource
+     */
+    public function getStreamContext()
+    {
+        if (! $this->context) {
+            $this->context = stream_context_create();
+        }
+
+        return $this->context;
+    }
+
+    /**
+     * Connect to the remote server
+     *
+     * @param string  $host
+     * @param int     $port
+     * @param  bool $secure
+     * @throws AdapterException\RuntimeException
+     */
+    public function connect($host, $port = 80, $secure = false)
+    {
+        // If we are connected to the wrong host, disconnect first
+        $connectedHost = (strpos($this->connectedTo[0], '://'))
+            ? substr($this->connectedTo[0], (strpos($this->connectedTo[0], '://') + 3), strlen($this->connectedTo[0]))
+            : $this->connectedTo[0];
+
+        if ($connectedHost != $host || $this->connectedTo[1] != $port) {
+            if (is_resource($this->socket)) {
+                $this->close();
+            }
+        }
+
+        // Now, if we are not connected, connect
+        if (!is_resource($this->socket) || ! $this->config['keepalive']) {
+            $context = $this->getStreamContext();
+
+            if ($secure || $this->config['sslusecontext']) {
+                if ($this->config['sslverifypeer'] !== null) {
+                    if (!stream_context_set_option($context, 'ssl', 'verify_peer', $this->config['sslverifypeer'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslverifypeer option');
+                    }
+                }
+
+                if ($this->config['sslcafile']) {
+                    if (!stream_context_set_option($context, 'ssl', 'cafile', $this->config['sslcafile'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslcafile option');
+                    }
+                }
+
+                if ($this->config['sslcapath']) {
+                    if (!stream_context_set_option($context, 'ssl', 'capath', $this->config['sslcapath'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslcapath option');
+                    }
+                }
+
+                if ($this->config['sslallowselfsigned'] !== null) {
+                    if (!stream_context_set_option($context, 'ssl', 'allow_self_signed', $this->config['sslallowselfsigned'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslallowselfsigned option');
+                    }
+                }
+
+                if ($this->config['sslcert'] !== null) {
+                    if (!stream_context_set_option($context, 'ssl', 'local_cert', $this->config['sslcert'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslcert option');
+                    }
+                }
+
+                if ($this->config['sslpassphrase'] !== null) {
+                    if (!stream_context_set_option($context, 'ssl', 'passphrase', $this->config['sslpassphrase'])) {
+                        throw new AdapterException\RuntimeException('Unable to set sslpassphrase option');
+                    }
+                }
+            }
+
+            $flags = STREAM_CLIENT_CONNECT;
+            if ($this->config['persistent']) {
+                $flags |= STREAM_CLIENT_PERSISTENT;
+            }
+
+            ErrorHandler::start();
+            $this->socket = stream_socket_client(
+                $host . ':' . $port,
+                $errno,
+                $errstr,
+                (int) $this->config['timeout'],
+                $flags,
+                $context
+            );
+            $error = ErrorHandler::stop();
+
+            if (!$this->socket) {
+                $this->close();
+                throw new AdapterException\RuntimeException(
+                    sprintf(
+                        'Unable to connect to %s:%d%s',
+                        $host,
+                        $port,
+                        ($error ? ' . Error #' . $error->getCode() . ': ' . $error->getMessage() : '')
+                    ),
+                    0,
+                    $error
+                );
+            }
+
+            // Set the stream timeout
+            if (!stream_set_timeout($this->socket, (int) $this->config['timeout'])) {
+                throw new AdapterException\RuntimeException('Unable to set the connection timeout');
+            }
+
+            if ($secure || $this->config['sslusecontext']) {
+                if ($this->config['ssltransport'] && isset(static::$sslCryptoTypes[$this->config['ssltransport']])) {
+                    $sslCryptoMethod = static::$sslCryptoTypes[$this->config['ssltransport']];
+                } else {
+                    $sslCryptoMethod = STREAM_CRYPTO_METHOD_SSLv3_CLIENT;
+                }
+
+                ErrorHandler::start();
+                $test  = stream_socket_enable_crypto($this->socket, true, $sslCryptoMethod);
+                $error = ErrorHandler::stop();
+                if (!$test || $error) {
+                    // Error handling is kind of difficult when it comes to SSL
+                    $errorString = '';
+                    if (extension_loaded('openssl')) {
+                        while (($sslError = openssl_error_string()) != false) {
+                            $errorString .= "; SSL error: $sslError";
+                        }
+                    }
+                    $this->close();
+
+                    if ((! $errorString) && $this->config['sslverifypeer']) {
+                        // There's good chance our error is due to sslcapath not being properly set
+                        if (! ($this->config['sslcafile'] || $this->config['sslcapath'])) {
+                            $errorString = 'make sure the "sslcafile" or "sslcapath" option are properly set for the environment.';
+                        } elseif ($this->config['sslcafile'] && !is_file($this->config['sslcafile'])) {
+                            $errorString = 'make sure the "sslcafile" option points to a valid SSL certificate file';
+                        } elseif ($this->config['sslcapath'] && !is_dir($this->config['sslcapath'])) {
+                            $errorString = 'make sure the "sslcapath" option points to a valid SSL certificate directory';
+                        }
+                    }
+
+                    if ($errorString) {
+                        $errorString = ": $errorString";
+                    }
+
+                    throw new AdapterException\RuntimeException(sprintf(
+                        'Unable to enable crypto on TCP connection %s%s',
+                        $host,
+                        $errorString
+                    ), 0, $error);
+                }
+
+                $host = $this->config['ssltransport'] . "://" . $host;
+            } else {
+                $host = 'tcp://' . $host;
+            }
+
+            // Update connectedTo
+            $this->connectedTo = [$host, $port];
+        }
+    }
+
+
+    /**
+     * Send request to the remote server
+     *
+     * @param string        $method
+     * @param \Zend\Uri\Uri $uri
+     * @param string        $httpVer
+     * @param array         $headers
+     * @param string        $body
+     * @throws AdapterException\RuntimeException
+     * @return string Request as string
+     */
+    public function write($method, $uri, $httpVer = '1.1', $headers = [], $body = '')
+    {
+        // Make sure we're properly connected
+        if (! $this->socket) {
+            throw new AdapterException\RuntimeException('Trying to write but we are not connected');
+        }
+
+        $host = $uri->getHost();
+        $host = (strtolower($uri->getScheme()) == 'https' ? $this->config['ssltransport'] : 'tcp') . '://' . $host;
+        if ($this->connectedTo[0] != $host || $this->connectedTo[1] != $uri->getPort()) {
+            throw new AdapterException\RuntimeException('Trying to write but we are connected to the wrong host');
+        }
+
+        // Save request method for later
+        $this->method = $method;
+
+        // Build request headers
+        $path = $uri->getPath();
+        if ($uri->getQuery()) {
+            $path .= '?' . $uri->getQuery();
+        }
+        $request = "{$method} {$path} HTTP/{$httpVer}\r\n";
+        foreach ($headers as $k => $v) {
+            if (is_string($k)) {
+                $v = ucfirst($k) . ": $v";
+            }
+            $request .= "$v\r\n";
+        }
+
+        if (is_resource($body)) {
+            $request .= "\r\n";
+        } else {
+            // Add the request body
+            $request .= "\r\n" . $body;
+        }
+
+        // Send the request
+        ErrorHandler::start();
+        $test  = fwrite($this->socket, $request);
+        $error = ErrorHandler::stop();
+        if (false === $test) {
+            throw new AdapterException\RuntimeException('Error writing request to server', 0, $error);
+        }
+
+        if (is_resource($body)) {
+            if (stream_copy_to_stream($body, $this->socket) == 0) {
+                throw new AdapterException\RuntimeException('Error writing request to server');
+            }
+        }
+
+        return $request;
+    }
+
+    /**
+     * Read response from server
+     *
+     * @throws AdapterException\RuntimeException
+     * @return string
+     */
+    public function read()
+    {
+        // First, read headers only
+        $response = '';
+        $gotStatus = false;
+
+        while (($line = fgets($this->socket)) !== false) {
+            $gotStatus = $gotStatus || (strpos($line, 'HTTP') !== false);
+            if ($gotStatus) {
+                $response .= $line;
+                if (rtrim($line) === '') {
+                    break;
+                }
+            }
+        }
+
+        $this->_checkSocketReadTimeout();
+
+        $responseObj= Response::fromString($response);
+
+        $statusCode = $responseObj->getStatusCode();
+
+        // Handle 100 and 101 responses internally by restarting the read again
+        if ($statusCode == 100 || $statusCode == 101) {
+            return $this->read();
+        }
+
+        // Check headers to see what kind of connection / transfer encoding we have
+        $headers = $responseObj->getHeaders();
+
+        /**
+         * Responses to HEAD requests and 204 or 304 responses are not expected
+         * to have a body - stop reading here
+         */
+        if ($statusCode == 304 || $statusCode == 204 ||
+            $this->method == \Zend\Http\Request::METHOD_HEAD) {
+            // Close the connection if requested to do so by the server
+            $connection = $headers->get('connection');
+            if ($connection && $connection->getFieldValue() == 'close') {
+                $this->close();
+            }
+            return $response;
+        }
+
+        // If we got a 'transfer-encoding: chunked' header
+        $transferEncoding = $headers->get('transfer-encoding');
+        $contentLength = $headers->get('content-length');
+        if ($transferEncoding !== false) {
+            if (strtolower($transferEncoding->getFieldValue()) == 'chunked') {
+                do {
+                    $line  = fgets($this->socket);
+                    $this->_checkSocketReadTimeout();
+
+                    $chunk = $line;
+
+                    // Figure out the next chunk size
+                    $chunksize = trim($line);
+                    if (! ctype_xdigit($chunksize)) {
+                        $this->close();
+                        throw new AdapterException\RuntimeException('Invalid chunk size "' .
+                            $chunksize . '" unable to read chunked body');
+                    }
+
+                    // Convert the hexadecimal value to plain integer
+                    $chunksize = hexdec($chunksize);
+
+                    // Read next chunk
+                    $readTo = ftell($this->socket) + $chunksize;
+
+                    do {
+                        $currentPos = ftell($this->socket);
+                        if ($currentPos >= $readTo) {
+                            break;
+                        }
+
+                        if ($this->outStream) {
+                            if (stream_copy_to_stream($this->socket, $this->outStream, $readTo - $currentPos) == 0) {
+                                $this->_checkSocketReadTimeout();
+                                break;
+                            }
+                        } else {
+                            $line = fread($this->socket, $readTo - $currentPos);
+                            if ($line === false || strlen($line) === 0) {
+                                $this->_checkSocketReadTimeout();
+                                break;
+                            }
+                            $chunk .= $line;
+                        }
+                    } while (! feof($this->socket));
+
+                    ErrorHandler::start();
+                    $chunk .= fgets($this->socket);
+                    ErrorHandler::stop();
+                    $this->_checkSocketReadTimeout();
+
+                    if (!$this->outStream) {
+                        $response .= $chunk;
+                    }
+                } while ($chunksize > 0);
+            } else {
+                $this->close();
+                throw new AdapterException\RuntimeException('Cannot handle "' .
+                    $transferEncoding->getFieldValue() . '" transfer encoding');
+            }
+
+            // We automatically decode chunked-messages when writing to a stream
+            // this means we have to disallow the Zend\Http\Response to do it again
+            if ($this->outStream) {
+                $response = str_ireplace("Transfer-Encoding: chunked\r\n", '', $response);
+            }
+        // Else, if we got the content-length header, read this number of bytes
+        } elseif ($contentLength !== false) {
+            // If we got more than one Content-Length header (see ZF-9404) use
+            // the last value sent
+            if (is_array($contentLength)) {
+                $contentLength = $contentLength[count($contentLength) - 1];
+            }
+            $contentLength = $contentLength->getFieldValue();
+
+            $currentPos = ftell($this->socket);
+
+            for ($readTo = $currentPos + $contentLength;
+                 $readTo > $currentPos;
+                 $currentPos = ftell($this->socket)) {
+                if ($this->outStream) {
+                    if (stream_copy_to_stream($this->socket, $this->outStream, $readTo - $currentPos) == 0) {
+                        $this->_checkSocketReadTimeout();
+                        break;
+                    }
+                } else {
+                    $chunk = fread($this->socket, $readTo - $currentPos);
+                    if ($chunk === false || strlen($chunk) === 0) {
+                        $this->_checkSocketReadTimeout();
+                        break;
+                    }
+
+                    $response .= $chunk;
+                }
+
+                // Break if the connection ended prematurely
+                if (feof($this->socket)) {
+                    break;
+                }
+            }
+
+        // Fallback: just read the response until EOF
+        } else {
+            do {
+                if ($this->outStream) {
+                    if (stream_copy_to_stream($this->socket, $this->outStream) == 0) {
+                        $this->_checkSocketReadTimeout();
+                        break;
+                    }
+                } else {
+                    $buff = fread($this->socket, 8192);
+                    if ($buff === false || strlen($buff) === 0) {
+                        $this->_checkSocketReadTimeout();
+                        break;
+                    } else {
+                        $response .= $buff;
+                    }
+                }
+            } while (feof($this->socket) === false);
+
+            $this->close();
+        }
+
+        // Close the connection if requested to do so by the server
+        $connection = $headers->get('connection');
+        if ($connection && $connection->getFieldValue() == 'close') {
+            $this->close();
+        }
+
+        return $response;
+    }
+
+    /**
+     * Close the connection to the server
+     *
+     */
+    public function close()
+    {
+        if (is_resource($this->socket)) {
+            ErrorHandler::start();
+            fclose($this->socket);
+            ErrorHandler::stop();
+        }
+        $this->socket = null;
+        $this->connectedTo = [null, null];
+    }
+
+    /**
+     * Check if the socket has timed out - if so close connection and throw
+     * an exception
+     *
+     * @throws AdapterException\TimeoutException with READ_TIMEOUT code
+     */
+    protected function _checkSocketReadTimeout()
+    {
+        if ($this->socket) {
+            $info = stream_get_meta_data($this->socket);
+            $timedout = $info['timed_out'];
+            if ($timedout) {
+                $this->close();
+                throw new AdapterException\TimeoutException(
+                    "Read timed out after {$this->config['timeout']} seconds",
+                    AdapterException\TimeoutException::READ_TIMEOUT
+                );
+            }
+        }
+    }
+
+    /**
+     * Set output stream for the response
+     *
+     * @param resource $stream
+     * @return \Zend\Http\Client\Adapter\Socket
+     */
+    public function setOutputStream($stream)
+    {
+        $this->outStream = $stream;
+        return $this;
+    }
+
+    /**
+     * Destructor: make sure the socket is disconnected
+     *
+     * If we are in persistent TCP mode, will not close the connection
+     *
+     */
+    public function __destruct()
+    {
+        if (! $this->config['persistent']) {
+            if ($this->socket) {
+                $this->close();
+            }
+        }
+    }
+}

vendor/zendframework/zend-http/src/Client/Adapter/StreamInterface.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+/**
+ * An interface description for Zend\Http\Client\Adapter\Stream classes.
+ *
+ * This interface describes Zend\Http\Client\Adapter which supports streaming.
+ */
+interface StreamInterface
+{
+    /**
+     * Set output stream
+     *
+     * This function sets output stream where the result will be stored.
+     *
+     * @param resource $stream Stream to write the output to
+     *
+     */
+    public function setOutputStream($stream);
+}

vendor/zendframework/zend-http/src/Client/Adapter/Test.php

@@ -0,0 +1,216 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Adapter;
+
+use Traversable;
+use Zend\Http\Response;
+use Zend\Stdlib\ArrayUtils;
+
+/**
+ * A testing-purposes adapter.
+ *
+ * Should be used to test all components that rely on Zend\Http\Client,
+ * without actually performing an HTTP request. You should instantiate this
+ * object manually, and then set it as the client's adapter. Then, you can
+ * set the expected response using the setResponse() method.
+ */
+class Test implements AdapterInterface
+{
+    /**
+     * Parameters array
+     *
+     * @var array
+     */
+    protected $config = [];
+
+    /**
+     * Buffer of responses to be returned by the read() method.  Can be
+     * set using setResponse() and addResponse().
+     *
+     * @var array
+     */
+    protected $responses = ["HTTP/1.1 400 Bad Request\r\n\r\n"];
+
+    /**
+     * Current position in the response buffer
+     *
+     * @var int
+     */
+    protected $responseIndex = 0;
+
+    /**
+     * Whether or not the next request will fail with an exception
+     *
+     * @var bool
+     */
+    protected $nextRequestWillFail = false;
+
+    /**
+     * Adapter constructor, currently empty. Config is set using setOptions()
+     */
+    public function __construct()
+    {
+    }
+
+    /**
+     * Set the nextRequestWillFail flag
+     *
+     * @param  bool $flag
+     * @return \Zend\Http\Client\Adapter\Test
+     */
+    public function setNextRequestWillFail($flag)
+    {
+        $this->nextRequestWillFail = (bool) $flag;
+
+        return $this;
+    }
+
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param  array|Traversable $options
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setOptions($options = [])
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+
+        if (! is_array($options)) {
+            throw new Exception\InvalidArgumentException(
+                'Array or Traversable object expected, got ' . gettype($options)
+            );
+        }
+
+        foreach ($options as $k => $v) {
+            $this->config[strtolower($k)] = $v;
+        }
+    }
+
+
+    /**
+     * Connect to the remote server
+     *
+     * @param  string $host
+     * @param  int    $port
+     * @param  bool   $secure
+     * @throws Exception\RuntimeException
+     */
+    public function connect($host, $port = 80, $secure = false)
+    {
+        if ($this->nextRequestWillFail) {
+            $this->nextRequestWillFail = false;
+            throw new Exception\RuntimeException('Request failed');
+        }
+    }
+
+    /**
+     * Send request to the remote server
+     *
+     * @param string        $method
+     * @param \Zend\Uri\Uri $uri
+     * @param string        $httpVer
+     * @param array         $headers
+     * @param string        $body
+     * @return string Request as string
+     */
+    public function write($method, $uri, $httpVer = '1.1', $headers = [], $body = '')
+    {
+        // Build request headers
+        $path = $uri->getPath();
+        if (empty($path)) {
+            $path = '/';
+        }
+        if ($uri->getQuery()) {
+            $path .= '?' . $uri->getQuery();
+        }
+        $request = "{$method} {$path} HTTP/{$httpVer}\r\n";
+        foreach ($headers as $k => $v) {
+            if (is_string($k)) {
+                $v = ucfirst($k) . ": $v";
+            }
+            $request .= "$v\r\n";
+        }
+
+        // Add the request body
+        $request .= "\r\n" . $body;
+
+        // Do nothing - just return the request as string
+
+        return $request;
+    }
+
+    /**
+     * Return the response set in $this->setResponse()
+     *
+     * @return string
+     */
+    public function read()
+    {
+        if ($this->responseIndex >= count($this->responses)) {
+            $this->responseIndex = 0;
+        }
+        return $this->responses[$this->responseIndex++];
+    }
+
+    /**
+     * Close the connection (dummy)
+     *
+     */
+    public function close()
+    {
+    }
+
+    /**
+     * Set the HTTP response(s) to be returned by this adapter
+     *
+     * @param \Zend\Http\Response|array|string $response
+     */
+    public function setResponse($response)
+    {
+        if ($response instanceof Response) {
+            $response = $response->toString();
+        }
+
+        $this->responses = (array) $response;
+        $this->responseIndex = 0;
+    }
+
+    /**
+     * Add another response to the response buffer.
+     *
+     * @param string|Response $response
+     */
+    public function addResponse($response)
+    {
+        if ($response instanceof Response) {
+            $response = $response->toString();
+        }
+
+        $this->responses[] = $response;
+    }
+
+    /**
+     * Sets the position of the response buffer.  Selects which
+     * response will be returned on the next call to read().
+     *
+     * @param int $index
+     * @throws Exception\OutOfRangeException
+     */
+    public function setResponseIndex($index)
+    {
+        if ($index < 0 || $index >= count($this->responses)) {
+            throw new Exception\OutOfRangeException(
+                'Index out of range of response buffer size');
+        }
+        $this->responseIndex = $index;
+    }
+}

vendor/zendframework/zend-http/src/Client/Exception/ExceptionInterface.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Exception;
+
+use Zend\Http\Exception\ExceptionInterface as HttpException;
+
+interface ExceptionInterface extends HttpException
+{
+}

vendor/zendframework/zend-http/src/Client/Exception/InvalidArgumentException.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Exception;
+
+use Zend\Http\Exception;
+
+/**
+ */
+class InvalidArgumentException extends Exception\InvalidArgumentException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Client/Exception/OutOfRangeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Exception;
+
+use Zend\Http\Exception;
+
+class OutOfRangeException extends Exception\OutOfRangeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Client/Exception/RuntimeException.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Client\Exception;
+
+use Zend\Http\Exception;
+
+/**
+ */
+class RuntimeException extends Exception\RuntimeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/ClientStatic.php

@@ -0,0 +1,112 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http;
+
+/**
+ * Http static client
+ */
+class ClientStatic
+{
+    /**
+     * @var Client
+     */
+    protected static $client;
+
+    /**
+     * Get the static HTTP client
+     *
+     * @param array|Traversable $options
+     * @return Client
+     */
+    protected static function getStaticClient($options = null)
+    {
+        if (!isset(static::$client) || $options !== null) {
+            static::$client = new Client(null, $options);
+        }
+        return static::$client;
+    }
+
+    /**
+     * HTTP GET METHOD (static)
+     *
+     * @param  string $url
+     * @param  array $query
+     * @param  array $headers
+     * @param  mixed $body
+     * @param  array|Traversable $clientOptions
+     * @return Response|bool
+     */
+    public static function get($url, $query = [], $headers = [], $body = null, $clientOptions = null)
+    {
+        if (empty($url)) {
+            return false;
+        }
+
+        $request= new Request();
+        $request->setUri($url);
+        $request->setMethod(Request::METHOD_GET);
+
+        if (!empty($query) && is_array($query)) {
+            $request->getQuery()->fromArray($query);
+        }
+
+        if (!empty($headers) && is_array($headers)) {
+            $request->getHeaders()->addHeaders($headers);
+        }
+
+        if (!empty($body)) {
+            $request->setContent($body);
+        }
+
+        return static::getStaticClient($clientOptions)->send($request);
+    }
+
+    /**
+     * HTTP POST METHOD (static)
+     *
+     * @param  string $url
+     * @param  array $params
+     * @param  array $headers
+     * @param  mixed $body
+     * @param  array|Traversable $clientOptions
+     * @throws Exception\InvalidArgumentException
+     * @return Response|bool
+     */
+    public static function post($url, $params, $headers = [], $body = null, $clientOptions = null)
+    {
+        if (empty($url)) {
+            return false;
+        }
+
+        $request= new Request();
+        $request->setUri($url);
+        $request->setMethod(Request::METHOD_POST);
+
+        if (!empty($params) && is_array($params)) {
+            $request->getPost()->fromArray($params);
+        } else {
+            throw new Exception\InvalidArgumentException('The array of post parameters is empty');
+        }
+
+        if (!isset($headers['Content-Type'])) {
+            $headers['Content-Type'] = Client::ENC_URLENCODED;
+        }
+
+        if (!empty($headers) && is_array($headers)) {
+            $request->getHeaders()->addHeaders($headers);
+        }
+
+        if (!empty($body)) {
+            $request->setContent($body);
+        }
+
+        return static::getStaticClient($clientOptions)->send($request);
+    }
+}

vendor/zendframework/zend-http/src/Cookies.php

@@ -0,0 +1,367 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http;
+
+use ArrayIterator;
+use Zend\Http\Header\SetCookie;
+use Zend\Uri;
+
+/**
+ * A Zend\Http\Cookies object is designed to contain and maintain HTTP cookies, and should
+ * be used along with Zend\Http\Client in order to manage cookies across HTTP requests and
+ * responses.
+ *
+ * The class contains an array of Zend\Http\Header\Cookie objects. Cookies can be added
+ * automatically from a request or manually. Then, the Cookies class can find and return the
+ * cookies needed for a specific HTTP request.
+ *
+ * A special parameter can be passed to all methods of this class that return cookies: Cookies
+ * can be returned either in their native form (as Zend\Http\Header\Cookie objects) or as strings -
+ * the later is suitable for sending as the value of the "Cookie" header in an HTTP request.
+ * You can also choose, when returning more than one cookie, whether to get an array of strings
+ * (by passing Zend\Http\Client\Cookies::COOKIE_STRING_ARRAY) or one unified string for all cookies
+ * (by passing Zend\Http\Client\Cookies::COOKIE_STRING_CONCAT).
+ *
+ * @link       http://wp.netscape.com/newsref/std/cookie_spec.html for some specs.
+ */
+class Cookies extends Headers
+{
+    /**
+     * Return cookie(s) as a Zend\Http\Cookie object
+     *
+     */
+    const COOKIE_OBJECT = 0;
+
+    /**
+     * Return cookie(s) as a string (suitable for sending in an HTTP request)
+     *
+     */
+    const COOKIE_STRING_ARRAY = 1;
+
+    /**
+     * Return all cookies as one long string (suitable for sending in an HTTP request)
+     *
+     */
+    const COOKIE_STRING_CONCAT = 2;
+
+    /**
+     * Return all cookies as one long string (strict mode)
+     *  - Single space after the semi-colon separating each cookie
+     *  - Remove trailing semi-colon, if any
+     */
+    const COOKIE_STRING_CONCAT_STRICT = 3;
+
+    /**
+     * @var array
+     */
+    protected $cookies = [];
+
+    /**
+     * @var \Zend\Http\Headers
+     */
+    protected $headers = null;
+
+    /**
+     * @var array
+     */
+    protected $rawCookies;
+
+    /**
+     * @static
+     * @throws Exception\RuntimeException
+     * @param $string
+     * @return void
+     */
+    public static function fromString($string)
+    {
+        throw new Exception\RuntimeException(
+            __CLASS__ . '::' . __FUNCTION__ . ' should not be used as a factory, use '
+            . __NAMESPACE__ . '\Headers::fromtString() instead.'
+        );
+    }
+
+    /**
+     * Add a cookie to the class. Cookie should be passed either as a Zend\Http\Header\SetCookie object
+     * or as a string - in which case an object is created from the string.
+     *
+     * @param SetCookie|string $cookie
+     * @param Uri\Uri|string $refUri Optional reference URI (for domain, path, secure)
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addCookie($cookie, $refUri = null)
+    {
+        if (is_string($cookie)) {
+            $cookie = SetCookie::fromString($cookie, $refUri);
+        }
+
+        if ($cookie instanceof SetCookie) {
+            $domain = $cookie->getDomain();
+            $path   = $cookie->getPath();
+            if (!isset($this->cookies[$domain])) {
+                $this->cookies[$domain] = [];
+            }
+            if (!isset($this->cookies[$domain][$path])) {
+                $this->cookies[$domain][$path] = [];
+            }
+            $this->cookies[$domain][$path][$cookie->getName()] = $cookie;
+            $this->rawCookies[] = $cookie;
+        } else {
+            throw new Exception\InvalidArgumentException('Supplient argument is not a valid cookie string or object');
+        }
+    }
+
+    /**
+     * Parse an HTTP response, adding all the cookies set in that response
+     *
+     * @param Response $response
+     * @param Uri\Uri|string $refUri Requested URI
+     */
+    public function addCookiesFromResponse(Response $response, $refUri)
+    {
+        $cookieHdrs = $response->getHeaders()->get('Set-Cookie');
+
+        if (is_array($cookieHdrs) || $cookieHdrs instanceof ArrayIterator) {
+            foreach ($cookieHdrs as $cookie) {
+                $this->addCookie($cookie, $refUri);
+            }
+        } elseif (is_string($cookieHdrs)) {
+            $this->addCookie($cookieHdrs, $refUri);
+        }
+    }
+
+    /**
+     * Get all cookies in the cookie jar as an array
+     *
+     * @param int $retAs Whether to return cookies as objects of \Zend\Http\Header\SetCookie or as strings
+     * @return array|string
+     */
+    public function getAllCookies($retAs = self::COOKIE_OBJECT)
+    {
+        $cookies = $this->_flattenCookiesArray($this->cookies, $retAs);
+        return $cookies;
+    }
+
+    /**
+     * Return an array of all cookies matching a specific request according to the request URI,
+     * whether session cookies should be sent or not, and the time to consider as "now" when
+     * checking cookie expiry time.
+     *
+     * @param string|Uri\Uri $uri URI to check against (secure, domain, path)
+     * @param bool $matchSessionCookies Whether to send session cookies
+     * @param int $retAs Whether to return cookies as objects of \Zend\Http\Header\Cookie or as strings
+     * @param int $now Override the current time when checking for expiry time
+     * @throws Exception\InvalidArgumentException if invalid URI specified
+     * @return array|string
+     */
+    public function getMatchingCookies(
+        $uri,
+        $matchSessionCookies = true,
+        $retAs = self::COOKIE_OBJECT,
+        $now = null
+    ) {
+        if (is_string($uri)) {
+            $uri = Uri\UriFactory::factory($uri, 'http');
+        } elseif (!$uri instanceof Uri\Uri) {
+            throw new Exception\InvalidArgumentException("Invalid URI string or object passed");
+        }
+
+        $host = $uri->getHost();
+        if (empty($host)) {
+            throw new Exception\InvalidArgumentException('Invalid URI specified; does not contain a host');
+        }
+
+        // First, reduce the array of cookies to only those matching domain and path
+        $cookies = $this->_matchDomain($host);
+        $cookies = $this->_matchPath($cookies, $uri->getPath());
+        $cookies = $this->_flattenCookiesArray($cookies, self::COOKIE_OBJECT);
+
+        // Next, run Cookie->match on all cookies to check secure, time and session matching
+        $ret = [];
+        foreach ($cookies as $cookie) {
+            if ($cookie->match($uri, $matchSessionCookies, $now)) {
+                $ret[] = $cookie;
+            }
+        }
+        // Now, use self::_flattenCookiesArray again - only to convert to the return format ;)
+        $ret = $this->_flattenCookiesArray($ret, $retAs);
+
+        return $ret;
+    }
+
+    /**
+     * Get a specific cookie according to a URI and name
+     *
+     * @param Uri\Uri|string $uri The uri (domain and path) to match
+     * @param string $cookieName The cookie's name
+     * @param int $retAs Whether to return cookies as objects of \Zend\Http\Header\SetCookie or as strings
+     * @throws Exception\InvalidArgumentException if invalid URI specified or invalid $retAs value
+     * @return SetCookie|string
+     */
+    public function getCookie($uri, $cookieName, $retAs = self::COOKIE_OBJECT)
+    {
+        if (is_string($uri)) {
+            $uri = Uri\UriFactory::factory($uri, 'http');
+        } elseif (!$uri instanceof Uri\Uri) {
+            throw new Exception\InvalidArgumentException('Invalid URI specified');
+        }
+
+        $host = $uri->getHost();
+        if (empty($host)) {
+            throw new Exception\InvalidArgumentException('Invalid URI specified; host missing');
+        }
+
+        // Get correct cookie path
+        $path = $uri->getPath();
+        $lastSlashPos = strrpos($path, '/') ?: 0;
+        $path = substr($path, 0, $lastSlashPos);
+        if (! $path) {
+            $path = '/';
+        }
+
+        if (isset($this->cookies[$uri->getHost()][$path][$cookieName])) {
+            $cookie = $this->cookies[$uri->getHost()][$path][$cookieName];
+
+            switch ($retAs) {
+                case self::COOKIE_OBJECT:
+                    return $cookie;
+
+                case self::COOKIE_STRING_ARRAY:
+                case self::COOKIE_STRING_CONCAT:
+                    return $cookie->__toString();
+
+                default:
+                    throw new Exception\InvalidArgumentException("Invalid value passed for \$retAs: {$retAs}");
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Helper function to recursively flatten an array. Should be used when exporting the
+     * cookies array (or parts of it)
+     *
+     * @param \Zend\Http\Header\SetCookie|array $ptr
+     * @param int $retAs What value to return
+     * @return array|string
+     */
+    protected function _flattenCookiesArray($ptr, $retAs = self::COOKIE_OBJECT)
+    {
+        if (is_array($ptr)) {
+            $ret = ($retAs == self::COOKIE_STRING_CONCAT ? '' : []);
+            foreach ($ptr as $item) {
+                if ($retAs == self::COOKIE_STRING_CONCAT) {
+                    $ret .= $this->_flattenCookiesArray($item, $retAs);
+                } else {
+                    $ret = array_merge($ret, $this->_flattenCookiesArray($item, $retAs));
+                }
+            }
+            return $ret;
+        } elseif ($ptr instanceof SetCookie) {
+            switch ($retAs) {
+                case self::COOKIE_STRING_ARRAY:
+                    return [$ptr->__toString()];
+
+                case self::COOKIE_STRING_CONCAT:
+                    return $ptr->__toString();
+
+                case self::COOKIE_OBJECT:
+                default:
+                    return [$ptr];
+            }
+        }
+
+        return;
+    }
+
+    /**
+     * Return a subset of the cookies array matching a specific domain
+     *
+     * @param string $domain
+     * @return array
+     */
+    protected function _matchDomain($domain)
+    {
+        $ret = [];
+
+        foreach (array_keys($this->cookies) as $cdom) {
+            if (SetCookie::matchCookieDomain($cdom, $domain)) {
+                $ret[$cdom] = $this->cookies[$cdom];
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Return a subset of a domain-matching cookies that also match a specified path
+     *
+     * @param array $domains
+     * @param string $path
+     * @return array
+     */
+    protected function _matchPath($domains, $path)
+    {
+        $ret = [];
+
+        foreach ($domains as $dom => $pathsArray) {
+            foreach (array_keys($pathsArray) as $cpath) {
+                if (SetCookie::matchCookiePath($cpath, $path)) {
+                    if (! isset($ret[$dom])) {
+                        $ret[$dom] = [];
+                    }
+
+                    $ret[$dom][$cpath] = $pathsArray[$cpath];
+                }
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Create a new Cookies object and automatically load into it all the
+     * cookies set in a Response object. If $uri is set, it will be
+     * considered as the requested URI for setting default domain and path
+     * of the cookie.
+     *
+     * @param Response $response HTTP Response object
+     * @param Uri\Uri|string $refUri The requested URI
+     * @return Cookies
+     * @todo Add the $uri functionality.
+     */
+    public static function fromResponse(Response $response, $refUri)
+    {
+        $jar = new static();
+        $jar->addCookiesFromResponse($response, $refUri);
+        return $jar;
+    }
+
+    /**
+     * Tells if the array of cookies is empty
+     *
+     * @return bool
+     */
+    public function isEmpty()
+    {
+        return count($this) == 0;
+    }
+
+    /**
+     * Empties the cookieJar of any cookie
+     *
+     * @return Cookies
+     */
+    public function reset()
+    {
+        $this->cookies = $this->rawCookies = [];
+        return $this;
+    }
+}

vendor/zendframework/zend-http/src/Exception/ExceptionInterface.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Exception;
+
+interface ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Exception/InvalidArgumentException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Exception;
+
+class InvalidArgumentException extends \InvalidArgumentException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Exception/OutOfRangeException.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Exception;
+
+class OutOfRangeException extends \OutOfRangeException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Exception/RuntimeException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Exception;
+
+class RuntimeException extends \RuntimeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Header/AbstractAccept.php

@@ -0,0 +1,456 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use stdClass;
+
+/**
+ * Abstract Accept Header
+ *
+ * Naming conventions:
+ *
+ *    Accept: audio/mp3; q=0.2; version=0.5, audio/basic+mp3
+ *   |------------------------------------------------------|  header line
+ *   |------|                                                  field name
+ *          |-----------------------------------------------|  field value
+ *          |-------------------------------|                  field value part
+ *          |------|                                           type
+ *                  |--|                                       subtype
+ *                  |--|                                       format
+ *                                                |----|       subtype
+ *                                                      |---|  format
+ *                      |-------------------|                  parameter set
+ *                              |-----------|                  parameter
+ *                              |-----|                        parameter key
+ *                                      |--|                   parameter value
+ *                        |---|                                priority
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ * @author     Dolf Schimmel - Freeaqingme
+ */
+abstract class AbstractAccept implements HeaderInterface
+{
+    /**
+     *
+     * @var stdClass[]
+     */
+    protected $fieldValueParts = [];
+
+    protected $regexAddType;
+
+    /**
+     * Determines if since last mutation the stack was sorted
+     *
+     * @var bool
+     */
+    protected $sorted = false;
+
+    /**
+     * Parse a full header line or just the field value part.
+     *
+     * @param string $headerLine
+     */
+    public function parseHeaderLine($headerLine)
+    {
+        if (strpos($headerLine, ':') !== false) {
+            list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+            if (strtolower($name) !== strtolower($this->getFieldName())) {
+                $value = $headerLine; // This is just for preserve the BC.
+            }
+        } else {
+            $value = $headerLine;
+        }
+
+        HeaderValue::assertValid($value);
+
+        foreach ($this->getFieldValuePartsFromHeaderLine($value) as $value) {
+            $this->addFieldValuePartToQueue($value);
+        }
+    }
+
+    /**
+     * Factory method: parse Accept header string
+     *
+     * @param  string $headerLine
+     * @return Accept
+     */
+    public static function fromString($headerLine)
+    {
+        $obj = new static();
+        $obj->parseHeaderLine($headerLine);
+        return $obj;
+    }
+
+    /**
+     * Parse the Field Value Parts represented by a header line
+     *
+     * @param string  $headerLine
+     * @throws Exception\InvalidArgumentException If header is invalid
+     * @return array
+     */
+    public function getFieldValuePartsFromHeaderLine($headerLine)
+    {
+        // process multiple accept values, they may be between quotes
+        if (!preg_match_all('/(?:[^,"]|"(?:[^\\\"]|\\\.)*")+/', $headerLine, $values)
+                || !isset($values[0])
+        ) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for ' . $this->getFieldName() . ' header string'
+            );
+        }
+
+        $out = [];
+        foreach ($values[0] as $value) {
+            $value = trim($value);
+            $out[] = $this->parseFieldValuePart($value);
+        }
+
+        return $out;
+    }
+
+    /**
+     * Parse the accept params belonging to a media range
+     *
+     * @param string $fieldValuePart
+     * @return stdClass
+     */
+    protected function parseFieldValuePart($fieldValuePart)
+    {
+        $raw = $subtypeWhole = $type = $fieldValuePart;
+        if ($pos = strpos($fieldValuePart, ';')) {
+            $type = substr($fieldValuePart, 0, $pos);
+        }
+
+        $params = $this->getParametersFromFieldValuePart($fieldValuePart);
+
+        if ($pos = strpos($fieldValuePart, ';')) {
+            $fieldValuePart = trim(substr($fieldValuePart, 0, $pos));
+        }
+
+        $format = '*';
+        $subtype = '*';
+
+        return (object) [
+                            'typeString' => trim($fieldValuePart),
+                            'type'       => $type,
+                            'subtype'    => $subtype,
+                            'subtypeRaw' => $subtypeWhole,
+                            'format'     => $format,
+                            'priority'   => isset($params['q']) ? $params['q'] : 1,
+                            'params'     => $params,
+                            'raw'        => trim($raw)
+        ];
+    }
+
+    /**
+     * Parse the keys contained in the header line
+     *
+     * @param string $fieldValuePart
+     * @return array
+     */
+    protected function getParametersFromFieldValuePart($fieldValuePart)
+    {
+        $params = [];
+        if ((($pos = strpos($fieldValuePart, ';')) !== false)) {
+            preg_match_all('/(?:[^;"]|"(?:[^\\\"]|\\\.)*")+/', $fieldValuePart, $paramsStrings);
+
+            if (isset($paramsStrings[0])) {
+                array_shift($paramsStrings[0]);
+                $paramsStrings = $paramsStrings[0];
+            }
+
+            foreach ($paramsStrings as $param) {
+                $explode = explode('=', $param, 2);
+
+                $value = trim($explode[1]);
+                if (isset($value[0]) && $value[0] == '"' && substr($value, -1) == '"') {
+                    $value = substr(substr($value, 1), 0, -1);
+                }
+
+                $params[trim($explode[0])] = stripslashes($value);
+            }
+        }
+
+        return $params;
+    }
+
+    /**
+     * Get field value
+     *
+     * @param array|null $values
+     * @return string
+     */
+    public function getFieldValue($values = null)
+    {
+        if (!$values) {
+            return $this->getFieldValue($this->fieldValueParts);
+        }
+
+        $strings = [];
+        foreach ($values as $value) {
+            $params = $value->params;
+            array_walk($params, [$this, 'assembleAcceptParam']);
+            $strings[] = implode(';', [$value->typeString] + $params);
+        }
+
+        return implode(', ', $strings);
+    }
+
+    /**
+     * Assemble and escape the field value parameters based on RFC 2616 section 2.1
+     *
+     * @todo someone should review this thoroughly
+     * @param string $value
+     * @param string $key
+     * @return string
+     */
+    protected function assembleAcceptParam(&$value, $key)
+    {
+        $separators = ['(', ')', '<', '>', '@', ',', ';', ':',
+                            '/', '[', ']', '?', '=', '{', '}',  ' ',  "\t"];
+
+        $escaped = preg_replace_callback(
+            '/[[:cntrl:]"\\\\]/', // escape cntrl, ", \
+            function ($v) {
+                return '\\' . $v[0];
+            },
+            $value
+        );
+
+        if ($escaped == $value && !array_intersect(str_split($value), $separators)) {
+            $value = $key . '=' . $value;
+        } else {
+            $value = $key . '="' . $escaped . '"';
+        }
+
+        return $value;
+    }
+
+    /**
+     * Add a type, with the given priority
+     *
+     * @param  string $type
+     * @param  int|float $priority
+     * @param  array (optional) $params
+     * @throws Exception\InvalidArgumentException
+     * @return Accept
+     */
+    protected function addType($type, $priority = 1, array $params = [])
+    {
+        if (!preg_match($this->regexAddType, $type)) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects a valid type; received "%s"',
+                __METHOD__,
+                (string) $type
+            ));
+        }
+
+        if (!is_int($priority) && !is_float($priority) && !is_numeric($priority)
+            || $priority > 1 || $priority < 0
+        ) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects a numeric priority; received %s',
+                __METHOD__,
+                (string) $priority
+            ));
+        }
+
+        if ($priority != 1) {
+            $params = ['q' => sprintf('%01.1f', $priority)] + $params;
+        }
+
+        $assembledString = $this->getFieldValue(
+            [(object) ['typeString' => $type, 'params' => $params]]
+        );
+
+        $value = $this->parseFieldValuePart($assembledString);
+        $this->addFieldValuePartToQueue($value);
+        return $this;
+    }
+
+    /**
+     * Does the header have the requested type?
+     *
+     * @param  array|string $matchAgainst
+     * @return bool
+     */
+    protected function hasType($matchAgainst)
+    {
+        return (bool) $this->match($matchAgainst);
+    }
+
+    /**
+     * Match a media string against this header
+     *
+     * @param array|string $matchAgainst
+     * @return Accept\FieldValuePArt\AcceptFieldValuePart|bool The matched value or false
+     */
+    public function match($matchAgainst)
+    {
+        if (is_string($matchAgainst)) {
+            $matchAgainst = $this->getFieldValuePartsFromHeaderLine($matchAgainst);
+        }
+
+        foreach ($this->getPrioritized() as $left) {
+            foreach ($matchAgainst as $right) {
+                if ($right->type == '*' || $left->type == '*') {
+                    if ($this->matchAcceptParams($left, $right)) {
+                        $left->setMatchedAgainst($right);
+
+                        return $left;
+                    }
+                }
+
+                if ($left->type == $right->type) {
+                    if (($left->subtype == $right->subtype || ($right->subtype == '*' || $left->subtype == '*')) &&
+                        ($left->format == $right->format || $right->format == '*' || $left->format == '*')
+                    ) {
+                        if ($this->matchAcceptParams($left, $right)) {
+                            $left->setMatchedAgainst($right);
+
+                            return $left;
+                        }
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Return a match where all parameters in argument #1 match those in argument #2
+     *
+     * @param array $match1
+     * @param array $match2
+     * @return bool|array
+     */
+    protected function matchAcceptParams($match1, $match2)
+    {
+        foreach ($match2->params as $key => $value) {
+            if (isset($match1->params[$key])) {
+                if (strpos($value, '-')) {
+                    preg_match(
+                        '/^(?|([^"-]*)|"([^"]*)")-(?|([^"-]*)|"([^"]*)")\z/',
+                        $value,
+                        $pieces
+                    );
+
+                    if (count($pieces) == 3 &&
+                        (version_compare($pieces[1], $match1->params[$key], '<=')  xor
+                         version_compare($pieces[2], $match1->params[$key], '>=')
+                        )
+                    ) {
+                        return false;
+                    }
+                } elseif (strpos($value, '|')) {
+                    $options = explode('|', $value);
+                    $good = false;
+                    foreach ($options as $option) {
+                        if ($option == $match1->params[$key]) {
+                            $good = true;
+                            break;
+                        }
+                    }
+
+                    if (!$good) {
+                        return false;
+                    }
+                } elseif ($match1->params[$key] != $value) {
+                    return false;
+                }
+            }
+        }
+
+        return $match1;
+    }
+
+    /**
+     * Add a key/value combination to the internal queue
+     *
+     * @param stdClass $value
+     * @return number
+     */
+    protected function addFieldValuePartToQueue($value)
+    {
+        $this->fieldValueParts[] = $value;
+        $this->sorted = false;
+    }
+
+    /**
+     * Sort the internal Field Value Parts
+     *
+     * @See rfc2616 sect 14.1
+     * Media ranges can be overridden by more specific media ranges or
+     * specific media types. If more than one media range applies to a given
+     * type, the most specific reference has precedence. For example,
+     *
+     * Accept: text/*, text/html, text/html;level=1, * /*
+     *
+     * have the following precedence:
+     *
+     * 1) text/html;level=1
+     * 2) text/html
+     * 3) text/*
+     * 4) * /*
+     *
+     * @return number
+     */
+    protected function sortFieldValueParts()
+    {
+        $sort = function ($a, $b) { // If A has higher precedence than B, return -1.
+            if ($a->priority > $b->priority) {
+                return -1;
+            } elseif ($a->priority < $b->priority) {
+                return 1;
+            }
+
+            // Asterisks
+            $values = ['type', 'subtype', 'format'];
+            foreach ($values as $value) {
+                if ($a->$value == '*' && $b->$value != '*') {
+                    return 1;
+                } elseif ($b->$value == '*' && $a->$value != '*') {
+                    return -1;
+                }
+            }
+
+            if ($a->type == 'application' && $b->type != 'application') {
+                return -1;
+            } elseif ($b->type == 'application' && $a->type != 'application') {
+                return 1;
+            }
+
+            //@todo count number of dots in case of type==application in subtype
+
+            // So far they're still the same. Longest string length may be more specific
+            if (strlen($a->raw) == strlen($b->raw)) {
+                return 0;
+            }
+            return (strlen($a->raw) > strlen($b->raw)) ? -1 : 1;
+        };
+
+        usort($this->fieldValueParts, $sort);
+        $this->sorted = true;
+    }
+
+    /**
+     * @return array with all the keys, values and parameters this header represents:
+     */
+    public function getPrioritized()
+    {
+        if (!$this->sorted) {
+            $this->sortFieldValueParts();
+        }
+
+        return $this->fieldValueParts;
+    }
+}

vendor/zendframework/zend-http/src/Header/AbstractDate.php

@@ -0,0 +1,268 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use DateTime;
+use DateTimeZone;
+
+/**
+ * Abstract Date/Time Header
+ * Supports headers that have date/time as value
+ *
+ * @see Zend\Http\Header\Date
+ * @see Zend\Http\Header\Expires
+ * @see Zend\Http\Header\IfModifiedSince
+ * @see Zend\Http\Header\IfUnmodifiedSince
+ * @see Zend\Http\Header\LastModified
+ *
+ * Note for 'Location' header:
+ * While RFC 1945 requires an absolute URI, most of the browsers also support relative URI
+ * This class allows relative URIs, and let user retrieve URI instance if strict validation needed
+ */
+abstract class AbstractDate implements HeaderInterface
+{
+    /**
+     * Date formats according to RFC 2616
+     * @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3
+     */
+    const DATE_RFC1123 = 0;
+    const DATE_RFC1036 = 1;
+    const DATE_ANSIC   = 2;
+
+    /**
+     * Date instance for this header
+     *
+     * @var DateTime
+     */
+    protected $date = null;
+
+    /**
+     * Date output format
+     *
+     * @var string
+     */
+    protected static $dateFormat = 'D, d M Y H:i:s \G\M\T';
+
+    /**
+     * Date formats defined by RFC 2616. RFC 1123 date is required
+     * RFC 1036 and ANSI C formats are provided for compatibility with old servers/clients
+     * @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3
+     *
+     * @var array
+     */
+    protected static $dateFormats = [
+        self::DATE_RFC1123 => 'D, d M Y H:i:s \G\M\T',
+        self::DATE_RFC1036 => 'D, d M y H:i:s \G\M\T',
+        self::DATE_ANSIC   => 'D M j H:i:s Y',
+    ];
+
+    /**
+     * Create date-based header from string
+     *
+     * @param string $headerLine
+     * @return AbstractDate
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        $dateHeader = new static();
+
+        list($name, $date) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== strtolower($dateHeader->getFieldName())) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for "' . $dateHeader->getFieldName() . '" header string'
+            );
+        }
+
+        $dateHeader->setDate($date);
+
+        return $dateHeader;
+    }
+
+    /**
+     * Create date-based header from strtotime()-compatible string
+     *
+     * @param int|string $time
+     *
+     * @return self
+     *
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromTimeString($time)
+    {
+        return static::fromTimestamp(strtotime($time));
+    }
+
+    /**
+     * Create date-based header from Unix timestamp
+     *
+     * @param int $time
+     *
+     * @return self
+     *
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromTimestamp($time)
+    {
+        $dateHeader = new static();
+
+        if (! $time || ! is_numeric($time)) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid time for "' . $dateHeader->getFieldName() . '" header string'
+            );
+        }
+
+        $dateHeader->setDate(new DateTime('@' . $time));
+
+        return $dateHeader;
+    }
+
+    /**
+     * Set date output format
+     *
+     * @param int $format
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function setDateFormat($format)
+    {
+        if (!isset(static::$dateFormats[$format])) {
+            throw new Exception\InvalidArgumentException(
+                "No constant defined for provided date format: {$format}"
+            );
+        }
+
+        static::$dateFormat = static::$dateFormats[$format];
+    }
+
+    /**
+     * Return current date output format
+     *
+     * @return string
+     */
+    public static function getDateFormat()
+    {
+        return static::$dateFormat;
+    }
+
+    /**
+     * Set the date for this header, this can be a string or an instance of \DateTime
+     *
+     * @param string|DateTime $date
+     * @return AbstractDate
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setDate($date)
+    {
+        if (is_string($date)) {
+            try {
+                $date = new DateTime($date, new DateTimeZone('GMT'));
+            } catch (\Exception $e) {
+                throw new Exception\InvalidArgumentException(
+                    sprintf('Invalid date passed as string (%s)', (string) $date),
+                    $e->getCode(),
+                    $e
+                );
+            }
+        } elseif (!($date instanceof DateTime)) {
+            throw new Exception\InvalidArgumentException('Date must be an instance of \DateTime or a string');
+        }
+
+        $date->setTimezone(new DateTimeZone('GMT'));
+        $this->date = $date;
+
+        return $this;
+    }
+
+    /**
+     * Return date for this header
+     *
+     * @return string
+     */
+    public function getDate()
+    {
+        return $this->date()->format(static::$dateFormat);
+    }
+
+    /**
+     * Return date for this header as an instance of \DateTime
+     *
+     * @return DateTime
+     */
+    public function date()
+    {
+        if ($this->date === null) {
+            $this->date = new DateTime(null, new DateTimeZone('GMT'));
+        }
+        return $this->date;
+    }
+
+    /**
+     * Compare provided date to date for this header
+     * Returns < 0 if date in header is less than $date; > 0 if it's greater, and 0 if they are equal.
+     * @see \strcmp()
+     *
+     * @param string|DateTime $date
+     * @return int
+     * @throws Exception\InvalidArgumentException
+     */
+    public function compareTo($date)
+    {
+        if (is_string($date)) {
+            try {
+                $date = new DateTime($date, new DateTimeZone('GMT'));
+            } catch (\Exception $e) {
+                throw new Exception\InvalidArgumentException(
+                    sprintf('Invalid Date passed as string (%s)', (string) $date),
+                    $e->getCode(),
+                    $e
+                );
+            }
+        } elseif (!($date instanceof DateTime)) {
+            throw new Exception\InvalidArgumentException('Date must be an instance of \DateTime or a string');
+        }
+
+        $dateTimestamp = $date->getTimestamp();
+        $thisTimestamp = $this->date()->getTimestamp();
+
+        return ($thisTimestamp === $dateTimestamp) ? 0 : (($thisTimestamp > $dateTimestamp) ? 1 : -1);
+    }
+
+    /**
+     * Get header value as formatted date
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        return $this->getDate();
+    }
+
+    /**
+     * Return header line
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return $this->getFieldName() . ': ' . $this->getDate();
+    }
+
+    /**
+     * Allow casting to string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+}

vendor/zendframework/zend-http/src/Header/AbstractLocation.php

@@ -0,0 +1,145 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Uri\Exception as UriException;
+use Zend\Uri\UriFactory;
+use Zend\Uri\UriInterface;
+
+/**
+ * Abstract Location Header
+ * Supports headers that have URI as value
+ * @see Zend\Http\Header\Location
+ * @see Zend\Http\Header\ContentLocation
+ * @see Zend\Http\Header\Referer
+ *
+ * Note for 'Location' header:
+ * While RFC 1945 requires an absolute URI, most of the browsers also support relative URI
+ * This class allows relative URIs, and let user retrieve URI instance if strict validation needed
+ */
+abstract class AbstractLocation implements HeaderInterface
+{
+    /**
+     * URI for this header
+     *
+     * @var UriInterface
+     */
+    protected $uri = null;
+
+    /**
+     * Create location-based header from string
+     *
+     * @param string $headerLine
+     * @return AbstractLocation
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        $locationHeader = new static();
+
+        // ZF-5520 - IIS bug, no space after colon
+        list($name, $uri) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== strtolower($locationHeader->getFieldName())) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for "' . $locationHeader->getFieldName() . '" header string'
+            );
+        }
+
+        HeaderValue::assertValid($uri);
+        $locationHeader->setUri(trim($uri));
+
+        return $locationHeader;
+    }
+
+    /**
+     * Set the URI/URL for this header, this can be a string or an instance of Zend\Uri\Http
+     *
+     * @param string|UriInterface $uri
+     * @return AbstractLocation
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setUri($uri)
+    {
+        if (is_string($uri)) {
+            try {
+                $uri = UriFactory::factory($uri);
+            } catch (UriException\InvalidUriPartException $e) {
+                throw new Exception\InvalidArgumentException(
+                    sprintf('Invalid URI passed as string (%s)', (string) $uri),
+                    $e->getCode(),
+                    $e
+                );
+            }
+        } elseif (!($uri instanceof UriInterface)) {
+            throw new Exception\InvalidArgumentException('URI must be an instance of Zend\Uri\Http or a string');
+        }
+        $this->uri = $uri;
+
+        return $this;
+    }
+
+    /**
+     * Return the URI for this header
+     *
+     * @return string
+     */
+    public function getUri()
+    {
+        if ($this->uri instanceof UriInterface) {
+            return $this->uri->toString();
+        }
+        return $this->uri;
+    }
+
+    /**
+     * Return the URI for this header as an instance of Zend\Uri\Http
+     *
+     * @return UriInterface
+     */
+    public function uri()
+    {
+        if ($this->uri === null || is_string($this->uri)) {
+            $this->uri = UriFactory::factory($this->uri);
+        }
+        return $this->uri;
+    }
+
+    /**
+     * Get header value as URI string
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        return $this->getUri();
+    }
+
+    /**
+     * Output header line
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return $this->getFieldName() . ': ' . $this->getUri();
+    }
+
+    /**
+     * Allow casting to string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept.php

@@ -0,0 +1,119 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Accept Header
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+class Accept extends AbstractAccept
+{
+    /**
+     * @var string
+     */
+    protected $regexAddType = '#^([a-zA-Z+-]+|\*)/(\*|[a-zA-Z0-9+-]+)$#';
+
+    /**
+     * Get field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Accept';
+    }
+
+    /**
+     * Cast to string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Accept: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Add a media type, with the given priority
+     *
+     * @param  string $type
+     * @param  int|float $priority
+     * @param  array $params
+     * @return Accept
+     */
+    public function addMediaType($type, $priority = 1, array $params = [])
+    {
+        return $this->addType($type, $priority, $params);
+    }
+
+    /**
+     * Does the header have the requested media type?
+     *
+     * @param  string $type
+     * @return bool
+     */
+    public function hasMediaType($type)
+    {
+        return $this->hasType($type);
+    }
+
+    /**
+     * Parse the keys contained in the header line
+     *
+     * @param  string $fieldValuePart
+     * @return FieldValuePart\AcceptFieldValuePart
+     * @see    \Zend\Http\Header\AbstractAccept::parseFieldValuePart()
+     */
+    protected function parseFieldValuePart($fieldValuePart)
+    {
+        $raw = $fieldValuePart;
+        if ($pos = strpos($fieldValuePart, '/')) {
+            $type = trim(substr($fieldValuePart, 0, $pos));
+        } else {
+            $type = trim($fieldValuePart);
+        }
+
+        $params = $this->getParametersFromFieldValuePart($fieldValuePart);
+
+        if ($pos = strpos($fieldValuePart, ';')) {
+            $fieldValuePart = trim(substr($fieldValuePart, 0, $pos));
+        }
+
+        if (strpos($fieldValuePart, '/')) {
+            $subtypeWhole = $format = $subtype = trim(substr($fieldValuePart, strpos($fieldValuePart, '/') + 1));
+        } else {
+            $subtypeWhole = '';
+            $format = '*';
+            $subtype = '*';
+        }
+
+        $pos = strpos($subtype, '+');
+        if (false !== $pos) {
+            $format = trim(substr($subtype, $pos + 1));
+            $subtype = trim(substr($subtype, 0, $pos));
+        }
+
+        $aggregated = [
+            'typeString' => trim($fieldValuePart),
+            'type'       => $type,
+            'subtype'    => $subtype,
+            'subtypeRaw' => $subtypeWhole,
+            'format'     => $format,
+            'priority'   => isset($params['q']) ? $params['q'] : 1,
+            'params'     => $params,
+            'raw'        => trim($raw),
+        ];
+
+        return new FieldValuePart\AcceptFieldValuePart((object) $aggregated);
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept/FieldValuePart/AbstractFieldValuePart.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Field Value Part
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+abstract class AbstractFieldValuePart
+{
+    /**
+     * Internal object used for value retrieval
+     * @var object
+     */
+    private $internalValues;
+
+    /**
+     * A Field Value Part this Field Value Part matched against.
+     * @var AbstractFieldValuePart
+     */
+    protected $matchedAgainst;
+
+    /**
+     *
+     * @param object $internalValues
+     */
+    public function __construct($internalValues)
+    {
+        $this->internalValues = $internalValues;
+    }
+
+    /**
+     * Set a Field Value Part this Field Value Part matched against.
+     *
+     * @param AbstractFieldValuePart $matchedAgainst
+     * @return AbstractFieldValuePart provides fluent interface
+     */
+    public function setMatchedAgainst(AbstractFieldValuePart $matchedAgainst)
+    {
+        $this->matchedAgainst = $matchedAgainst;
+        return $this;
+    }
+
+    /**
+     * Get a Field Value Part this Field Value Part matched against.
+     *
+     * @return AbstractFieldValuePart|null
+     */
+    public function getMatchedAgainst()
+    {
+        return $this->matchedAgainst;
+    }
+
+    /**
+     *
+     * @return object
+     */
+    protected function getInternalValues()
+    {
+        return $this->internalValues;
+    }
+
+    /**
+     * @return string $typeString
+     */
+    public function getTypeString()
+    {
+        return $this->getInternalValues()->typeString;
+    }
+
+    /**
+     * @return float $priority
+     */
+    public function getPriority()
+    {
+        return (float) $this->getInternalValues()->priority;
+    }
+
+    /**
+     * @return \stdClass $params
+     */
+    public function getParams()
+    {
+        return (object) $this->getInternalValues()->params;
+    }
+
+    /**
+     * @return string $raw
+     */
+    public function getRaw()
+    {
+        return $this->getInternalValues()->raw;
+    }
+
+    /**
+     *
+     * @param mixed
+     * @return mixed
+     */
+    public function __get($key)
+    {
+        return $this->getInternalValues()->$key;
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept/FieldValuePart/AcceptFieldValuePart.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Field Value Part
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+class AcceptFieldValuePart extends AbstractFieldValuePart
+{
+    /**
+     * @return string
+     */
+    public function getSubtype()
+    {
+        return $this->getInternalValues()->subtype;
+    }
+
+    /**
+     * @return string
+     */
+    public function getSubtypeRaw()
+    {
+        return $this->getInternalValues()->subtypeRaw;
+    }
+
+    /**
+     * @return string
+     */
+    public function getFormat()
+    {
+        return $this->getInternalValues()->format;
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept/FieldValuePart/CharsetFieldValuePart.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Field Value Part
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+class CharsetFieldValuePart extends AbstractFieldValuePart
+{
+    /**
+     *
+     * @return string
+     */
+    public function getCharset()
+    {
+        return $this->getInternalValues()->type;
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept/FieldValuePart/EncodingFieldValuePart.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Field Value Part
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+class EncodingFieldValuePart extends AbstractFieldValuePart
+{
+    /**
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        return $this->getInternalValues()->type;
+    }
+}

vendor/zendframework/zend-http/src/Header/Accept/FieldValuePart/LanguageFieldValuePart.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Field Value Part
+ *
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
+ */
+class LanguageFieldValuePart extends AbstractFieldValuePart
+{
+    public function getLanguage()
+    {
+        return $this->getInternalValues()->typeString;
+    }
+
+    public function getPrimaryTag()
+    {
+        return $this->getInternalValues()->type;
+    }
+
+    public function getSubTag()
+    {
+        return $this->getInternalValues()->subtype;
+    }
+}

vendor/zendframework/zend-http/src/Header/AcceptCharset.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Accept Charset Header
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.2
+ */
+class AcceptCharset extends AbstractAccept
+{
+    protected $regexAddType = '#^([a-zA-Z0-9+-]+|\*)$#';
+
+    /**
+     * Get field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Accept-Charset';
+    }
+
+    /**
+     * Cast to string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Accept-Charset: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Add a charset, with the given priority
+     *
+     * @param  string $type
+     * @param  int|float $priority
+     * @return Accept
+     */
+    public function addCharset($type, $priority = 1)
+    {
+        return $this->addType($type, $priority);
+    }
+
+    /**
+     * Does the header have the requested charset?
+     *
+     * @param  string $type
+     * @return bool
+     */
+    public function hasCharset($type)
+    {
+        return $this->hasType($type);
+    }
+
+    /**
+     * Parse the keys contained in the header line
+     *
+     * @param string $fieldValuePart
+     * @return \Zend\Http\Header\Accept\FieldValuePart\CharsetFieldValuePart
+     * @see \Zend\Http\Header\AbstractAccept::parseFieldValuePart()
+     */
+    protected function parseFieldValuePart($fieldValuePart)
+    {
+        $internalValues = parent::parseFieldValuePart($fieldValuePart);
+
+        return new FieldValuePart\CharsetFieldValuePart($internalValues);
+    }
+}

vendor/zendframework/zend-http/src/Header/AcceptEncoding.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Accept Encoding Header
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3
+ */
+class AcceptEncoding extends AbstractAccept
+{
+    protected $regexAddType = '#^([a-zA-Z0-9+-]+|\*)$#';
+
+    /**
+     * Get field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Accept-Encoding';
+    }
+
+    /**
+     * Cast to string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Accept-Encoding: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Add an encoding, with the given priority
+     *
+     * @param  string $type
+     * @param  int|float $priority
+     * @return Accept
+     */
+    public function addEncoding($type, $priority = 1)
+    {
+        return $this->addType($type, $priority);
+    }
+
+    /**
+     * Does the header have the requested encoding?
+     *
+     * @param  string $type
+     * @return bool
+     */
+    public function hasEncoding($type)
+    {
+        return $this->hasType($type);
+    }
+
+    /**
+     * Parse the keys contained in the header line
+     *
+     * @param string $fieldValuePart
+     * @return \Zend\Http\Header\Accept\FieldValuePart\EncodingFieldValuePart
+     * @see \Zend\Http\Header\AbstractAccept::parseFieldValuePart()
+     */
+    protected function parseFieldValuePart($fieldValuePart)
+    {
+        $internalValues = parent::parseFieldValuePart($fieldValuePart);
+
+        return new FieldValuePart\EncodingFieldValuePart($internalValues);
+    }
+}

vendor/zendframework/zend-http/src/Header/AcceptLanguage.php

@@ -0,0 +1,109 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Http\Header\Accept\FieldValuePart;
+
+/**
+ * Accept Language Header
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
+ */
+class AcceptLanguage extends AbstractAccept
+{
+    protected $regexAddType = '#^([a-zA-Z0-9+-]+|\*)$#';
+
+    /**
+     * Get field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Accept-Language';
+    }
+
+    /**
+     * Cast to string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Accept-Language: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Add a language, with the given priority
+     *
+     * @param  string $type
+     * @param  int|float $priority
+     * @return Accept
+     */
+    public function addLanguage($type, $priority = 1)
+    {
+        return $this->addType($type, $priority);
+    }
+
+    /**
+     * Does the header have the requested language?
+     *
+     * @param  string $type
+     * @return bool
+     */
+    public function hasLanguage($type)
+    {
+        return $this->hasType($type);
+    }
+
+    /**
+     * Parse the keys contained in the header line
+     *
+     * @param string $fieldValuePart
+     * @return \Zend\Http\Header\Accept\FieldValuePart\LanguageFieldValuePart
+     * @see \Zend\Http\Header\AbstractAccept::parseFieldValuePart()
+     */
+    protected function parseFieldValuePart($fieldValuePart)
+    {
+        $raw = $fieldValuePart;
+        if ($pos = strpos($fieldValuePart, '-')) {
+            $type = trim(substr($fieldValuePart, 0, $pos));
+        } else {
+            $type = trim(substr($fieldValuePart, 0));
+        }
+
+        $params = $this->getParametersFromFieldValuePart($fieldValuePart);
+
+        if ($pos = strpos($fieldValuePart, ';')) {
+            $fieldValuePart = $type = trim(substr($fieldValuePart, 0, $pos));
+        }
+
+        if (strpos($fieldValuePart, '-')) {
+            $subtypeWhole = $format = $subtype = trim(substr($fieldValuePart, strpos($fieldValuePart, '-')+1));
+        } else {
+            $subtypeWhole = '';
+            $format = '*';
+            $subtype = '*';
+        }
+
+        $aggregated = [
+                'typeString' => trim($fieldValuePart),
+                'type'       => $type,
+                'subtype'    => $subtype,
+                'subtypeRaw' => $subtypeWhole,
+                'format'     => $format,
+                'priority'   => isset($params['q']) ? $params['q'] : 1,
+                'params'     => $params,
+                'raw'        => trim($raw)
+        ];
+
+        return new FieldValuePart\LanguageFieldValuePart((object) $aggregated);
+    }
+}

vendor/zendframework/zend-http/src/Header/AcceptRanges.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Accept Ranges Header
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.5
+ */
+class AcceptRanges implements HeaderInterface
+{
+    protected $rangeUnit;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'accept-ranges') {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for Accept-Ranges string'
+            );
+        }
+
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($rangeUnit = null)
+    {
+        if ($rangeUnit) {
+            $this->setRangeUnit($rangeUnit);
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Accept-Ranges';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->getRangeUnit();
+    }
+
+    public function setRangeUnit($rangeUnit)
+    {
+        HeaderValue::assertValid($rangeUnit);
+        $this->rangeUnit = $rangeUnit;
+        return $this;
+    }
+
+    public function getRangeUnit()
+    {
+        return $this->rangeUnit;
+    }
+
+    public function toString()
+    {
+        return 'Accept-Ranges: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Age.php

@@ -0,0 +1,109 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Age HTTP Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.6
+ */
+class Age implements HeaderInterface
+{
+    /**
+     * Estimate of the amount of time in seconds since the response
+     *
+     * @var int
+     */
+    protected $deltaSeconds;
+
+    /**
+     * Create Age header from string
+     *
+     * @param string $headerLine
+     * @return Age
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'age') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Age string: "' . $name . '"');
+        }
+
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($deltaSeconds = null)
+    {
+        if ($deltaSeconds) {
+            $this->setDeltaSeconds($deltaSeconds);
+        }
+    }
+
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Age';
+    }
+
+    /**
+     * Get header value (number of seconds)
+     *
+     * @return int
+     */
+    public function getFieldValue()
+    {
+        return $this->getDeltaSeconds();
+    }
+
+    /**
+     * Set number of seconds
+     *
+     * @param int $delta
+     * @return RetryAfter
+     */
+    public function setDeltaSeconds($delta)
+    {
+        if (! is_int($delta) && ! is_numeric($delta)) {
+            throw new Exception\InvalidArgumentException('Invalid delta provided');
+        }
+        $this->deltaSeconds = (int) $delta;
+        return $this;
+    }
+
+    /**
+     * Get number of seconds
+     *
+     * @return int
+     */
+    public function getDeltaSeconds()
+    {
+        return $this->deltaSeconds;
+    }
+
+    /**
+     * Return header line
+     * In case of overflow RFC states to set value of 2147483648 (2^31)
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Age: ' . (($this->deltaSeconds >= PHP_INT_MAX) ? '2147483648' : $this->deltaSeconds);
+    }
+}

vendor/zendframework/zend-http/src/Header/Allow.php

@@ -0,0 +1,185 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Http\Request;
+
+/**
+ * Allow Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.7
+ */
+class Allow implements HeaderInterface
+{
+    /**
+     * List of request methods
+     * true states that method is allowed, false - disallowed
+     * By default GET and POST are allowed
+     *
+     * @var array
+     */
+    protected $methods = [
+        Request::METHOD_OPTIONS => false,
+        Request::METHOD_GET     => true,
+        Request::METHOD_HEAD    => false,
+        Request::METHOD_POST    => true,
+        Request::METHOD_PUT     => false,
+        Request::METHOD_DELETE  => false,
+        Request::METHOD_TRACE   => false,
+        Request::METHOD_CONNECT => false,
+        Request::METHOD_PATCH   => false,
+    ];
+
+    /**
+     * Create Allow header from header line
+     *
+     * @param string $headerLine
+     * @return Allow
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'allow') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Allow string: "' . $name . '"');
+        }
+
+        $header = new static();
+        $header->disallowMethods(array_keys($header->getAllMethods()));
+        $header->allowMethods(explode(',', $value));
+
+        return $header;
+    }
+
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Allow';
+    }
+
+    /**
+     * Get comma-separated list of allowed methods
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        return implode(', ', array_keys($this->methods, true, true));
+    }
+
+    /**
+     * Get list of all defined methods
+     *
+     * @return array
+     */
+    public function getAllMethods()
+    {
+        return $this->methods;
+    }
+
+    /**
+     * Get list of allowed methods
+     *
+     * @return array
+     */
+    public function getAllowedMethods()
+    {
+        return array_keys($this->methods, true, true);
+    }
+
+    /**
+     * Allow methods or list of methods
+     *
+     * @param array|string $allowedMethods
+     * @return Allow
+     */
+    public function allowMethods($allowedMethods)
+    {
+        foreach ((array) $allowedMethods as $method) {
+            $method = trim(strtoupper($method));
+            if (preg_match('/\s/', $method)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Unable to whitelist method; "%s" is not a valid method',
+                    $method
+                ));
+            }
+            $this->methods[$method] = true;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Disallow methods or list of methods
+     *
+     * @param array|string $disallowedMethods
+     * @return Allow
+     */
+    public function disallowMethods($disallowedMethods)
+    {
+        foreach ((array) $disallowedMethods as $method) {
+            $method = trim(strtoupper($method));
+            if (preg_match('/\s/', $method)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Unable to blacklist method; "%s" is not a valid method',
+                    $method
+                ));
+            }
+            $this->methods[$method] = false;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Convenience alias for @see disallowMethods()
+     *
+     * @param array|string $disallowedMethods
+     * @return Allow
+     */
+    public function denyMethods($disallowedMethods)
+    {
+        return $this->disallowMethods($disallowedMethods);
+    }
+
+    /**
+     * Check whether method is allowed
+     *
+     * @param string $method
+     * @return bool
+     */
+    public function isAllowedMethod($method)
+    {
+        $method = trim(strtoupper($method));
+
+        // disallow unknown method
+        if (! isset($this->methods[$method])) {
+            $this->methods[$method] = false;
+        }
+
+        return $this->methods[$method];
+    }
+
+    /**
+     * Return header as string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Allow: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/AuthenticationInfo.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.ietf.org/rfc/rfc2617.txt
+ */
+class AuthenticationInfo implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'authentication-info') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Authentication-Info string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Authentication-Info';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Authentication-Info: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Authorization.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.8
+ */
+class Authorization implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'authorization') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Authorization string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Authorization';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Authorization: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/CacheControl.php

@@ -0,0 +1,252 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9
+ */
+class CacheControl implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    /**
+     * Array of Cache-Control directives
+     *
+     * @var array
+     */
+    protected $directives = [];
+
+    /**
+     * Creates a CacheControl object from a headerLine
+     *
+     * @param string $headerLine
+     * @throws Exception\InvalidArgumentException
+     * @return CacheControl
+     */
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'cache-control') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Cache-Control string: ""',
+                $name
+            ));
+        }
+
+        HeaderValue::assertValid($value);
+        $directives = static::parseValue($value);
+
+        // @todo implementation details
+        $header = new static();
+        foreach ($directives as $key => $value) {
+            $header->addDirective($key, $value);
+        }
+
+        return $header;
+    }
+
+    /**
+     * Required from HeaderDescription interface
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Cache-Control';
+    }
+
+    /**
+     * Checks if the internal directives array is empty
+     *
+     * @return bool
+     */
+    public function isEmpty()
+    {
+        return empty($this->directives);
+    }
+
+    /**
+     * Add a directive
+     * For directives like 'max-age=60', $value = '60'
+     * For directives like 'private', use the default $value = true
+     *
+     * @param string $key
+     * @param string|bool $value
+     * @return CacheControl - provides the fluent interface
+     */
+    public function addDirective($key, $value = true)
+    {
+        HeaderValue::assertValid($key);
+        if (! is_bool($value)) {
+            HeaderValue::assertValid($value);
+        }
+        $this->directives[$key] = $value;
+        return $this;
+    }
+
+    /**
+     * Check the internal directives array for a directive
+     *
+     * @param string $key
+     * @return bool
+     */
+    public function hasDirective($key)
+    {
+        return array_key_exists($key, $this->directives);
+    }
+
+    /**
+     * Fetch the value of a directive from the internal directive array
+     *
+     * @param string $key
+     * @return string|null
+     */
+    public function getDirective($key)
+    {
+        return array_key_exists($key, $this->directives) ? $this->directives[$key] : null;
+    }
+
+    /**
+     * Remove a directive
+     *
+     * @param string $key
+     * @return CacheControl - provides the fluent interface
+     */
+    public function removeDirective($key)
+    {
+        unset($this->directives[$key]);
+        return $this;
+    }
+
+    /**
+     * Assembles the directives into a comma-delimited string
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        $parts = [];
+        ksort($this->directives);
+        foreach ($this->directives as $key => $value) {
+            if (true === $value) {
+                $parts[] = $key;
+            } else {
+                if (preg_match('#[^a-zA-Z0-9._-]#', $value)) {
+                    $value = '"' . $value.'"';
+                }
+                $parts[] = "$key=$value";
+            }
+        }
+        return implode(', ', $parts);
+    }
+
+    /**
+     * Returns a string representation of the HTTP Cache-Control header
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Cache-Control: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Internal function for parsing the value part of a
+     * HTTP Cache-Control header
+     *
+     * @param string $value
+     * @throws Exception\InvalidArgumentException
+     * @return array
+     */
+    protected static function parseValue($value)
+    {
+        $value = trim($value);
+
+        $directives = [];
+
+        // handle empty string early so we don't need a separate start state
+        if ($value == '') {
+            return $directives;
+        }
+
+        $lastMatch = null;
+
+        state_directive:
+        switch (static::match(['[a-zA-Z][a-zA-Z_-]*'], $value, $lastMatch)) {
+            case 0:
+                $directive = $lastMatch;
+                goto state_value;
+                // intentional fall-through
+
+            default:
+                throw new Exception\InvalidArgumentException('expected DIRECTIVE');
+        }
+
+        state_value:
+        switch (static::match(['="[^"]*"', '=[^",\s;]*'], $value, $lastMatch)) {
+            case 0:
+                $directives[$directive] = substr($lastMatch, 2, -1);
+                goto state_separator;
+                // intentional fall-through
+
+            case 1:
+                $directives[$directive] = rtrim(substr($lastMatch, 1));
+                goto state_separator;
+                // intentional fall-through
+
+            default:
+                $directives[$directive] = true;
+                goto state_separator;
+        }
+
+        state_separator:
+        switch (static::match(['\s*,\s*', '$'], $value, $lastMatch)) {
+            case 0:
+                goto state_directive;
+                // intentional fall-through
+
+            case 1:
+                return $directives;
+
+            default:
+                throw new Exception\InvalidArgumentException('expected SEPARATOR or END');
+
+        }
+    }
+
+    /**
+     * Internal function used by parseValue to match tokens
+     *
+     * @param array $tokens
+     * @param string $string
+     * @param string $lastMatch
+     * @return int
+     */
+    protected static function match($tokens, &$string, &$lastMatch)
+    {
+        // Ensure we have a string
+        $value = (string) $string;
+
+        foreach ($tokens as $i => $token) {
+            if (preg_match('/^' . $token . '/', $value, $matches)) {
+                $lastMatch = $matches[0];
+                $string = substr($value, strlen($matches[0]));
+                return $i;
+            }
+        }
+        return -1;
+    }
+}

vendor/zendframework/zend-http/src/Header/Connection.php

@@ -0,0 +1,117 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Connection Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.10
+ */
+class Connection implements HeaderInterface
+{
+    const CONNECTION_CLOSE      = 'close';
+    const CONNECTION_KEEP_ALIVE = 'keep-alive';
+
+    /**
+     * Value of this header
+     *
+     * @var string
+     */
+    protected $value = self::CONNECTION_KEEP_ALIVE;
+
+    /**
+     * @param $headerLine
+     * @return Connection
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        $header = new static();
+
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'connection') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Connection string: "' . $name . '"');
+        }
+
+        $header->setValue(trim($value));
+
+        return $header;
+    }
+
+    /**
+     * Set Connection header to define persistent connection
+     *
+     * @param  bool $flag
+     * @return Connection
+     */
+    public function setPersistent($flag)
+    {
+        $this->value = (bool) $flag
+            ? self::CONNECTION_KEEP_ALIVE
+            : self::CONNECTION_CLOSE;
+        return $this;
+    }
+
+    /**
+     * Get whether this connection is persistent
+     *
+     * @return bool
+     */
+    public function isPersistent()
+    {
+        return ($this->value === self::CONNECTION_KEEP_ALIVE);
+    }
+
+    /**
+     * Set arbitrary header value
+     * RFC allows any token as value, 'close' and 'keep-alive' are commonly used
+     *
+     * @param string $value
+     * @return Connection
+     */
+    public function setValue($value)
+    {
+        HeaderValue::assertValid($value);
+        $this->value = strtolower($value);
+        return $this;
+    }
+
+    /**
+     * Connection header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Connection';
+    }
+
+    /**
+     * Connection header value
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Return header line
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Connection: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentDisposition.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1
+ */
+class ContentDisposition implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-disposition') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Disposition string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Disposition';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Disposition: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentEncoding.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11
+ */
+class ContentEncoding implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-encoding') {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for Content-Encoding string: "' . $name . '"'
+            );
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Encoding';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Encoding: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentLanguage.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.12
+ */
+class ContentLanguage implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-language') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Language string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Language';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Language: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentLength.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13
+ */
+class ContentLength implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-length') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Length string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Length';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Length: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentLocation.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Content-Location Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.14
+ */
+class ContentLocation extends AbstractLocation
+{
+    /**
+     * Return header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Content-Location';
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentMD5.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.15
+ */
+class ContentMD5 implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-md5') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Content-MD5 string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-MD5';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-MD5: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentRange.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.16
+ */
+class ContentRange implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-range') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Range string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Range';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Range: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentSecurityPolicy.php

@@ -0,0 +1,153 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Content Security Policy 1.0 Header
+ *
+ * @link http://www.w3.org/TR/CSP/
+ */
+class ContentSecurityPolicy implements HeaderInterface
+{
+    /**
+     * Valid directive names
+     *
+     * @var array
+     */
+    protected $validDirectiveNames = [
+        // As per http://www.w3.org/TR/CSP/#directives
+        'default-src',
+        'script-src',
+        'object-src',
+        'style-src',
+        'img-src',
+        'media-src',
+        'frame-src',
+        'font-src',
+        'connect-src',
+        'sandbox',
+        'report-uri',
+    ];
+
+    /**
+     * The directives defined for this policy
+     *
+     * @var array
+     */
+    protected $directives = [];
+
+    /**
+     * Get the list of defined directives
+     *
+     * @return array
+     */
+    public function getDirectives()
+    {
+        return $this->directives;
+    }
+
+    /**
+     * Sets the directive to consist of the source list
+     *
+     * Reverses http://www.w3.org/TR/CSP/#parsing-1
+     *
+     * @param string $name The directive name.
+     * @param array $sources The source list.
+     * @return self
+     * @throws Exception\InvalidArgumentException If the name is not a valid directive name.
+     */
+    public function setDirective($name, array $sources)
+    {
+        if (! in_array($name, $this->validDirectiveNames, true)) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects a valid directive name; received "%s"',
+                __METHOD__,
+                (string) $name
+            ));
+        }
+        if (empty($sources)) {
+            $this->directives[$name] = "'none'";
+            return $this;
+        }
+
+        array_walk($sources, [__NAMESPACE__ . '\HeaderValue', 'assertValid']);
+
+        $this->directives[$name] = implode(' ', $sources);
+        return $this;
+    }
+
+    /**
+     * Create Content Security Policy header from a given header line
+     *
+     * @param string $headerLine The header line to parse.
+     * @return self
+     * @throws Exception\InvalidArgumentException If the name field in the given header line does not match.
+     */
+    public static function fromString($headerLine)
+    {
+        $header = new static();
+        $headerName = $header->getFieldName();
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+        // Ensure the proper header name
+        if (strcasecmp($name, $headerName) != 0) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for %s string: "%s"',
+                $headerName,
+                $name
+            ));
+        }
+        // As per http://www.w3.org/TR/CSP/#parsing
+        $tokens = explode(';', $value);
+        foreach ($tokens as $token) {
+            $token = trim($token);
+            if ($token) {
+                list($directiveName, $directiveValue) = explode(' ', $token, 2);
+                if (!isset($header->directives[$directiveName])) {
+                    $header->setDirective($directiveName, [$directiveValue]);
+                }
+            }
+        }
+        return $header;
+    }
+
+    /**
+     * Get the header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Content-Security-Policy';
+    }
+
+    /**
+     * Get the header value
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        $directives = [];
+        foreach ($this->directives as $name => $value) {
+            $directives[] = sprintf('%s %s;', $name, $value);
+        }
+        return implode(' ', $directives);
+    }
+
+    /**
+     * Return the header as a string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return sprintf('%s: %s', $this->getFieldName(), $this->getFieldValue());
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentTransferEncoding.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11 @todo find section
+ */
+class ContentTransferEncoding implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-transfer-encoding') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Transfer-Encoding string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static(strtolower($value));
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Content-Transfer-Encoding';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Content-Transfer-Encoding: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ContentType.php

@@ -0,0 +1,404 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use stdClass;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17
+ */
+class ContentType implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $mediaType;
+
+    /**
+     * @var array
+     */
+    protected $parameters = [];
+
+    /**
+     * @var string
+     */
+    protected $value;
+
+    /**
+     * Factory method: create an object from a string representation
+     *
+     * @param  string $headerLine
+     * @return self
+     */
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'content-type') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Content-Type string: "%s"',
+                $name
+            ));
+        }
+
+        $parts             = explode(';', $value);
+        $mediaType         = array_shift($parts);
+        $header = new static($value, trim($mediaType));
+
+        if (count($parts) > 0) {
+            $parameters = [];
+            foreach ($parts as $parameter) {
+                $parameter = trim($parameter);
+                if (!preg_match('/^(?P<key>[^\s\=]+)\="?(?P<value>[^\s\"]*)"?$/', $parameter, $matches)) {
+                    continue;
+                }
+                $parameters[$matches['key']] = $matches['value'];
+            }
+            $header->setParameters($parameters);
+        }
+
+        return $header;
+    }
+
+    public function __construct($value = null, $mediaType = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+        $this->mediaType = $mediaType;
+    }
+
+    /**
+     * Determine if the mediatype value in this header matches the provided criteria
+     *
+     * @param  array|string $matchAgainst
+     * @return string|bool Matched value or false
+     */
+    public function match($matchAgainst)
+    {
+        if (is_string($matchAgainst)) {
+            $matchAgainst = $this->splitMediaTypesFromString($matchAgainst);
+        }
+
+        $mediaType = $this->getMediaType();
+        $left      = $this->getMediaTypeObjectFromString($mediaType);
+
+        foreach ($matchAgainst as $matchType) {
+            $matchType = strtolower($matchType);
+
+            if ($mediaType == $matchType) {
+                return $matchType;
+            }
+
+            $right = $this->getMediaTypeObjectFromString($matchType);
+
+            // Is the right side a wildcard type?
+            if ($right->type == '*') {
+                if ($this->validateSubtype($right, $left)) {
+                    return $matchType;
+                }
+            }
+
+            // Do the types match?
+            if ($right->type == $left->type) {
+                if ($this->validateSubtype($right, $left)) {
+                    return $matchType;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Create a string representation of the header
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Content-Type: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Get the field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Content-Type';
+    }
+
+    /**
+     * Get the field value
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        if (null !== $this->value) {
+            return $this->value;
+        }
+        return $this->assembleValue();
+    }
+
+    /**
+     * Set the media type
+     *
+     * @param  string $mediaType
+     * @return self
+     */
+    public function setMediaType($mediaType)
+    {
+        HeaderValue::assertValid($mediaType);
+        $this->mediaType = strtolower($mediaType);
+        $this->value     = null;
+        return $this;
+    }
+
+    /**
+     * Get the media type
+     *
+     * @return string
+     */
+    public function getMediaType()
+    {
+        return $this->mediaType;
+    }
+
+    /**
+     * Set additional content-type parameters
+     *
+     * @param  array $parameters
+     * @return self
+     */
+    public function setParameters(array $parameters)
+    {
+        foreach ($parameters as $key => $value) {
+            HeaderValue::assertValid($key);
+            HeaderValue::assertValid($value);
+        }
+        $this->parameters = array_merge($this->parameters, $parameters);
+        $this->value      = null;
+        return $this;
+    }
+
+    /**
+     * Get any additional content-type parameters currently set
+     *
+     * @return array
+     */
+    public function getParameters()
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * Set the content-type character set encoding
+     *
+     * @param  string $charset
+     * @return self
+     */
+    public function setCharset($charset)
+    {
+        HeaderValue::assertValid($charset);
+        $this->parameters['charset'] = $charset;
+        $this->value = null;
+        return $this;
+    }
+
+    /**
+     * Get the content-type character set encoding, if any
+     *
+     * @return null|string
+     */
+    public function getCharset()
+    {
+        if (isset($this->parameters['charset'])) {
+            return $this->parameters['charset'];
+        }
+        return;
+    }
+
+    /**
+     * Assemble the value based on the media type and any available parameters
+     *
+     * @return string
+     */
+    protected function assembleValue()
+    {
+        $mediaType = $this->getMediaType();
+        if (empty($this->parameters)) {
+            return $mediaType;
+        }
+
+        $parameters = [];
+        foreach ($this->parameters as $key => $value) {
+            $parameters[] = sprintf('%s=%s', $key, $value);
+        }
+
+        return sprintf('%s; %s', $mediaType, implode('; ', $parameters));
+    }
+
+    /**
+     * Split comma-separated media types into an array
+     *
+     * @param  string $criteria
+     * @return array
+     */
+    protected function splitMediaTypesFromString($criteria)
+    {
+        $mediaTypes = explode(',', $criteria);
+        array_walk(
+            $mediaTypes,
+            function (&$value) {
+                $value = trim($value);
+            }
+        );
+
+        return $mediaTypes;
+    }
+
+    /**
+     * Split a mediatype string into an object with the following parts:
+     *
+     * - type
+     * - subtype
+     * - format
+     *
+     * @param  string $string
+     * @return stdClass
+     */
+    protected function getMediaTypeObjectFromString($string)
+    {
+        if (!is_string($string)) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Non-string mediatype "%s" provided',
+                (is_object($string) ? get_class($string) : gettype($string))
+            ));
+        }
+
+        $parts = explode('/', $string, 2);
+        if (1 == count($parts)) {
+            throw new Exception\DomainException(sprintf(
+                'Invalid mediatype "%s" provided',
+                $string
+            ));
+        }
+
+        $type    = array_shift($parts);
+        $subtype = array_shift($parts);
+        $format  = $subtype;
+        if (strstr($subtype, '+')) {
+            $parts   = explode('+', $subtype, 2);
+            $subtype = array_shift($parts);
+            $format  = array_shift($parts);
+        }
+
+        $mediaType = (object) [
+            'type'    => $type,
+            'subtype' => $subtype,
+            'format'  => $format,
+        ];
+
+        return $mediaType;
+    }
+
+    /**
+     * Validate a subtype
+     *
+     * @param  stdClass $right
+     * @param  stdClass $left
+     * @return bool
+     */
+    protected function validateSubtype($right, $left)
+    {
+        // Is the right side a wildcard subtype?
+        if ($right->subtype == '*') {
+            return $this->validateFormat($right, $left);
+        }
+
+        // Do the right side and left side subtypes match?
+        if ($right->subtype == $left->subtype) {
+            return $this->validateFormat($right, $left);
+        }
+
+        // Is the right side a partial wildcard?
+        if ('*' == substr($right->subtype, -1)) {
+            // validate partial-wildcard subtype
+            if (!$this->validatePartialWildcard($right->subtype, $left->subtype)) {
+                return false;
+            }
+            // Finally, verify format is valid
+            return $this->validateFormat($right, $left);
+        }
+
+        // Does the right side subtype match the left side format?
+        if ($right->subtype == $left->format) {
+            return true;
+        }
+
+        // At this point, there is no valid match
+        return false;
+    }
+
+    /**
+     * Validate the format
+     *
+     * Validate that the right side format matches what the left side defines.
+     *
+     * @param  string $right
+     * @param  string $left
+     * @return bool
+     */
+    protected function validateFormat($right, $left)
+    {
+        if ($right->format && $left->format) {
+            if ($right->format == '*') {
+                return true;
+            }
+            if ($right->format == $left->format) {
+                return true;
+            }
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Validate a partial wildcard (i.e., string ending in '*')
+     *
+     * @param  string $right
+     * @param  string $left
+     * @return bool
+     */
+    protected function validatePartialWildcard($right, $left)
+    {
+        $requiredSegment = substr($right, 0, strlen($right) - 1);
+        if ($requiredSegment == $left) {
+            return true;
+        }
+
+        if (strlen($requiredSegment) >= strlen($left)) {
+            return false;
+        }
+
+        if (0 === strpos($left, $requiredSegment)) {
+            return true;
+        }
+
+        return false;
+    }
+}

vendor/zendframework/zend-http/src/Header/Cookie.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use ArrayObject;
+
+/**
+ * @see http://www.ietf.org/rfc/rfc2109.txt
+ * @see http://www.w3.org/Protocols/rfc2109/rfc2109
+ */
+class Cookie extends ArrayObject implements HeaderInterface
+{
+    protected $encodeValue = true;
+
+    public static function fromSetCookieArray(array $setCookies)
+    {
+        $nvPairs = [];
+
+        foreach ($setCookies as $setCookie) {
+            if (! $setCookie instanceof SetCookie) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    '%s requires an array of SetCookie objects',
+                    __METHOD__
+                ));
+            }
+
+            if (array_key_exists($setCookie->getName(), $nvPairs)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Two cookies with the same name were provided to %s',
+                    __METHOD__
+                ));
+            }
+
+            $nvPairs[$setCookie->getName()] = $setCookie->getValue();
+        }
+
+        return new static($nvPairs);
+    }
+
+    public static function fromString($headerLine)
+    {
+        $header = new static();
+
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'cookie') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Server string: "' . $name . '"');
+        }
+
+        $nvPairs = preg_split('#;\s*#', $value);
+
+        $arrayInfo = [];
+        foreach ($nvPairs as $nvPair) {
+            $parts = explode('=', $nvPair, 2);
+            if (count($parts) != 2) {
+                throw new Exception\RuntimeException('Malformed Cookie header found');
+            }
+            list($name, $value) = $parts;
+            $arrayInfo[$name] = urldecode($value);
+        }
+
+        $header->exchangeArray($arrayInfo);
+
+        return $header;
+    }
+
+    public function __construct(array $array = [])
+    {
+        parent::__construct($array, ArrayObject::ARRAY_AS_PROPS);
+    }
+
+    public function setEncodeValue($encodeValue)
+    {
+        $this->encodeValue = (bool) $encodeValue;
+        return $this;
+    }
+
+    public function getEncodeValue()
+    {
+        return $this->encodeValue;
+    }
+
+    public function getFieldName()
+    {
+        return 'Cookie';
+    }
+
+    public function getFieldValue()
+    {
+        $nvPairs = [];
+
+        foreach ($this as $name => $value) {
+            $nvPairs[] = $name . '=' . (($this->encodeValue) ? urlencode($value) : $value);
+        }
+
+        return implode('; ', $nvPairs);
+    }
+
+    public function toString()
+    {
+        return 'Cookie: ' . $this->getFieldValue();
+    }
+
+    /**
+     * Get the cookie as a string, suitable for sending as a "Cookie" header in an
+     * HTTP request
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->toString();
+    }
+}

vendor/zendframework/zend-http/src/Header/Date.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Date Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.18
+ */
+class Date extends AbstractDate
+{
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Date';
+    }
+}

vendor/zendframework/zend-http/src/Header/Etag.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.19
+ */
+class Etag implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'etag') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Etag string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Etag';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Etag: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Exception/DomainException.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Exception;
+
+class DomainException extends \DomainException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Header/Exception/ExceptionInterface.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Exception;
+
+use Zend\Http\Exception\ExceptionInterface as HttpException;
+
+interface ExceptionInterface extends HttpException
+{
+}

vendor/zendframework/zend-http/src/Header/Exception/InvalidArgumentException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Exception;
+
+use Zend\Http\Exception;
+
+class InvalidArgumentException extends Exception\InvalidArgumentException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Header/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header\Exception;
+
+use Zend\Http\Exception;
+
+class RuntimeException extends Exception\RuntimeException implements
+    ExceptionInterface
+{
+}

vendor/zendframework/zend-http/src/Header/Expect.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.20
+ */
+class Expect implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'expect') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Expect string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Expect';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Expect: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Expires.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Expires Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.21
+ */
+class Expires extends AbstractDate
+{
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Expires';
+    }
+}

vendor/zendframework/zend-http/src/Header/From.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.22
+ */
+class From implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'from') {
+            throw new Exception\InvalidArgumentException('Invalid header line for From string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'From';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'From: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/GenericHeader.php

@@ -0,0 +1,164 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Content-Location Header
+ *
+  */
+class GenericHeader implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $fieldName = null;
+
+    /**
+     * @var string
+     */
+    protected $fieldValue = null;
+
+    /**
+     * Factory to generate a header object from a string
+     *
+     * @static
+     * @param string $headerLine
+     * @return GenericHeader
+     */
+    public static function fromString($headerLine)
+    {
+        list($fieldName, $fieldValue) = GenericHeader::splitHeaderLine($headerLine);
+        $header = new static($fieldName, $fieldValue);
+        return $header;
+    }
+
+    /**
+     * Splits the header line in `name` and `value` parts.
+     *
+     * @param string $headerLine
+     * @return string[] `name` in the first index and `value` in the second.
+     * @throws Exception\InvalidArgumentException If header does not match with the format ``name:value``
+     */
+    public static function splitHeaderLine($headerLine)
+    {
+        $parts = explode(':', $headerLine, 2);
+        if (count($parts) !== 2) {
+            throw new Exception\InvalidArgumentException('Header must match with the format "name:value"');
+        }
+
+        if (! HeaderValue::isValid($parts[1])) {
+            throw new Exception\InvalidArgumentException('Invalid header value detected');
+        }
+
+        $parts[1] = ltrim($parts[1]);
+
+        return $parts;
+    }
+
+    /**
+     * Constructor
+     *
+     * @param null|string $fieldName
+     * @param null|string $fieldValue
+     */
+    public function __construct($fieldName = null, $fieldValue = null)
+    {
+        if ($fieldName) {
+            $this->setFieldName($fieldName);
+        }
+
+        if ($fieldValue !== null) {
+            $this->setFieldValue($fieldValue);
+        }
+    }
+
+    /**
+     * Set header field name
+     *
+     * @param  string $fieldName
+     * @return GenericHeader
+     * @throws Exception\InvalidArgumentException If the name does not match with RFC 2616 format.
+     */
+    public function setFieldName($fieldName)
+    {
+        if (!is_string($fieldName) || empty($fieldName)) {
+            throw new Exception\InvalidArgumentException('Header name must be a string');
+        }
+
+        /*
+         * Following RFC 7230 section 3.2
+         *
+         * header-field = field-name ":" [ field-value ]
+         * field-name   = token
+         * token        = 1*tchar
+         * tchar        = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
+         *                "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
+         */
+        if (!preg_match('/^[!#$%&\'*+\-\.\^_`|~0-9a-zA-Z]+$/', $fieldName)) {
+            throw new Exception\InvalidArgumentException(
+                'Header name must be a valid RFC 7230 (section 3.2) field-name.'
+            );
+        }
+
+        $this->fieldName = $fieldName;
+        return $this;
+    }
+
+    /**
+     * Retrieve header field name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return $this->fieldName;
+    }
+
+    /**
+     * Set header field value
+     *
+     * @param  string $fieldValue
+     * @return GenericHeader
+     */
+    public function setFieldValue($fieldValue)
+    {
+        $fieldValue = (string) $fieldValue;
+        HeaderValue::assertValid($fieldValue);
+
+        if (preg_match('/^\s+$/', $fieldValue)) {
+            $fieldValue = '';
+        }
+
+        $this->fieldValue = $fieldValue;
+        return $this;
+    }
+
+    /**
+     * Retrieve header field value
+     *
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        return $this->fieldValue;
+    }
+
+    /**
+     * Cast to string as a well formed HTTP header line
+     *
+     * Returns in form of "NAME: VALUE\r\n"
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return $this->getFieldName() . ': ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/GenericMultiHeader.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+class GenericMultiHeader extends GenericHeader implements MultipleHeaderInterface
+{
+    public static function fromString($headerLine)
+    {
+        list($fieldName, $fieldValue) = GenericHeader::splitHeaderLine($headerLine);
+
+        if (strpos($fieldValue, ',')) {
+            $headers = [];
+            foreach (explode(',', $fieldValue) as $multiValue) {
+                $headers[] = new static($fieldName, $multiValue);
+            }
+            return $headers;
+        } else {
+            $header = new static($fieldName, $fieldValue);
+            return $header;
+        }
+    }
+
+    public function toStringMultipleHeaders(array $headers)
+    {
+        $name  = $this->getFieldName();
+        $values = [$this->getFieldValue()];
+        foreach ($headers as $header) {
+            if (!$header instanceof static) {
+                throw new Exception\InvalidArgumentException('This method toStringMultipleHeaders was expecting an array of headers of the same type');
+            }
+            $values[] = $header->getFieldValue();
+        }
+        return $name . ': ' . implode(',', $values) . "\r\n";
+    }
+}

vendor/zendframework/zend-http/src/Header/HeaderInterface.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Interface for HTTP Header classes.
+ */
+interface HeaderInterface
+{
+    /**
+     * Factory to generate a header object from a string
+     *
+     * @param string $headerLine
+     * @return self
+     * @throws Exception\InvalidArgumentException If the header does not match RFC 2616 definition.
+     * @see http://tools.ietf.org/html/rfc2616#section-4.2
+     */
+    public static function fromString($headerLine);
+
+    /**
+     * Retrieve header name
+     *
+     * @return string
+     */
+    public function getFieldName();
+
+    /**
+     * Retrieve header value
+     *
+     * @return string
+     */
+    public function getFieldValue();
+
+    /**
+     * Cast to string
+     *
+     * Returns in form of "NAME: VALUE"
+     *
+     * @return string
+     */
+    public function toString();
+}

vendor/zendframework/zend-http/src/Header/HeaderValue.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+final class HeaderValue
+{
+    /**
+     * Private constructor; non-instantiable.
+     */
+    private function __construct()
+    {
+    }
+
+    /**
+     * Filter a header value
+     *
+     * Ensures CRLF header injection vectors are filtered.
+     *
+     * Per RFC 7230, only VISIBLE ASCII characters, spaces, and horizontal
+     * tabs are allowed in values; only one whitespace character is allowed
+     * between visible characters.
+     *
+     * @see http://en.wikipedia.org/wiki/HTTP_response_splitting
+     * @param string $value
+     * @return string
+     */
+    public static function filter($value)
+    {
+        $value  = (string) $value;
+        $length = strlen($value);
+        $string = '';
+        for ($i = 0; $i < $length; $i += 1) {
+            $ascii = ord($value[$i]);
+
+            // Non-visible, non-whitespace characters
+            // 9 === horizontal tab
+            // 32-126, 128-254 === visible
+            // 127 === DEL
+            // 255 === null byte
+            if (($ascii < 32 && $ascii !== 9)
+                || $ascii === 127
+                || $ascii > 254
+            ) {
+                continue;
+            }
+
+            $string .= $value[$i];
+        }
+
+        return $string;
+    }
+
+    /**
+     * Validate a header value.
+     *
+     * Per RFC 7230, only VISIBLE ASCII characters, spaces, and horizontal
+     * tabs are allowed in values; only one whitespace character is allowed
+     * between visible characters.
+     *
+     * @see http://en.wikipedia.org/wiki/HTTP_response_splitting
+     * @param string $value
+     * @return bool
+     */
+    public static function isValid($value)
+    {
+        $value  = (string) $value;
+        $length = strlen($value);
+        for ($i = 0; $i < $length; $i += 1) {
+            $ascii = ord($value[$i]);
+
+            // Non-visible, non-whitespace characters
+            // 9 === horizontal tab
+            // 32-126, 128-254 === visible
+            // 127 === DEL
+            // 255 === null byte
+            if (($ascii < 32 && $ascii !== 9)
+                || $ascii === 127
+                || $ascii > 254
+            ) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Assert a header value is valid.
+     *
+     * @param string $value
+     * @throws Exception\RuntimeException for invalid values
+     * @return void
+     */
+    public static function assertValid($value)
+    {
+        if (! self::isValid($value)) {
+            throw new Exception\InvalidArgumentException('Invalid header value');
+        }
+    }
+}

vendor/zendframework/zend-http/src/Header/Host.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.23
+ */
+class Host implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'host') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Host string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Host';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Host: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/IfMatch.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.24
+ */
+class IfMatch implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'if-match') {
+            throw new Exception\InvalidArgumentException('Invalid header line for If-Match string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'If-Match';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'If-Match: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/IfModifiedSince.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * If-Modified-Since Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.25
+ */
+class IfModifiedSince extends AbstractDate
+{
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'If-Modified-Since';
+    }
+}

vendor/zendframework/zend-http/src/Header/IfNoneMatch.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26
+ */
+class IfNoneMatch implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'if-none-match') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for If-None-Match string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'If-None-Match';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'If-None-Match: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/IfRange.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.27
+ */
+class IfRange implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'if-range') {
+            throw new Exception\InvalidArgumentException('Invalid header line for If-Range string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'If-Range';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'If-Range: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/IfUnmodifiedSince.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * If-Unmodified-Since Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.28
+ */
+class IfUnmodifiedSince extends AbstractDate
+{
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'If-Unmodified-Since';
+    }
+}

vendor/zendframework/zend-http/src/Header/KeepAlive.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @todo Search for RFC for this header
+ */
+class KeepAlive implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'keep-alive') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Keep-Alive string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Keep-Alive';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Keep-Alive: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/LastModified.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Last-Modified Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.29
+ */
+class LastModified extends AbstractDate
+{
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Last-Modified';
+    }
+}

vendor/zendframework/zend-http/src/Header/Location.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Location Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.30
+ */
+class Location extends AbstractLocation
+{
+    /**
+     * Return header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Location';
+    }
+}

vendor/zendframework/zend-http/src/Header/MaxForwards.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.31
+ */
+class MaxForwards implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'max-forwards') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Max-Forwards string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Max-Forwards';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Max-Forwards: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/MultipleHeaderInterface.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+interface MultipleHeaderInterface extends HeaderInterface
+{
+    public function toStringMultipleHeaders(array $headers);
+}

vendor/zendframework/zend-http/src/Header/Origin.php

@@ -0,0 +1,67 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Uri\UriFactory;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://tools.ietf.org/id/draft-abarth-origin-03.html#rfc.section.2
+ */
+class Origin implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value = '';
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = explode(': ', $headerLine, 2);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'origin') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Origin string: "' . $name . '"');
+        }
+
+        $uri = UriFactory::factory($value);
+        if (!$uri->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid header value for Origin key: "' . $name . '"');
+        }
+
+        return new static($value);
+    }
+
+    /**
+     * @param string|null $value
+     */
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Origin';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Origin: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Pragma.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.32
+ */
+class Pragma implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'pragma') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Pragma string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Pragma';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Pragma: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/ProxyAuthenticate.php

@@ -0,0 +1,78 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.33
+ */
+class ProxyAuthenticate implements MultipleHeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'proxy-authenticate') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Proxy-Authenticate string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Proxy-Authenticate';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Proxy-Authenticate: ' . $this->getFieldValue();
+    }
+
+    public function toStringMultipleHeaders(array $headers)
+    {
+        $strings = [$this->toString()];
+        foreach ($headers as $header) {
+            if (!$header instanceof ProxyAuthenticate) {
+                throw new Exception\RuntimeException(
+                    'The ProxyAuthenticate multiple header implementation can only accept'
+                    . ' an array of ProxyAuthenticate headers'
+                );
+            }
+            $strings[] = $header->toString();
+        }
+        return implode("\r\n", $strings);
+    }
+}

vendor/zendframework/zend-http/src/Header/ProxyAuthorization.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.34
+ */
+class ProxyAuthorization implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'proxy-authorization') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for Proxy-Authorization string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Proxy-Authorization';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Proxy-Authorization: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Range.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.2
+ */
+class Range implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'range') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Range string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Range';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Range: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Referer.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use Zend\Uri\Http as HttpUri;
+
+/**
+ * Content-Location Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.36
+ */
+class Referer extends AbstractLocation
+{
+    /**
+     * Set the URI/URL for this header
+     * according to RFC Referer URI should not have fragment
+     *
+     * @param  string|HttpUri $uri
+     * @return Referer
+     */
+    public function setUri($uri)
+    {
+        parent::setUri($uri);
+        $this->uri->setFragment(null);
+
+        return $this;
+    }
+
+    /**
+     * Return header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Referer';
+    }
+}

vendor/zendframework/zend-http/src/Header/Refresh.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @todo FIND SPEC FOR THIS
+ */
+class Refresh implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'refresh') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Refresh string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Refresh';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Refresh: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/RetryAfter.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * Retry-After HTTP Header
+ *
+ * @link       http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.37
+ */
+class RetryAfter extends AbstractDate
+{
+    /**
+     * Value of header in delta-seconds
+     * By default set to 1 hour
+     *
+     * @var int
+     */
+    protected $deltaSeconds = 3600;
+
+    /**
+     * Create Retry-After header from string
+     *
+     * @param  string $headerLine
+     * @return RetryAfter
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function fromString($headerLine)
+    {
+        $dateHeader = new static();
+
+        list($name, $date) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== strtolower($dateHeader->getFieldName())) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for "' . $dateHeader->getFieldName() . '" header string'
+            );
+        }
+
+        if (is_numeric($date)) {
+            $dateHeader->setDeltaSeconds($date);
+        } else {
+            $dateHeader->setDate($date);
+        }
+
+        return $dateHeader;
+    }
+
+    /**
+     * Set number of seconds
+     *
+     * @param int $delta
+     * @return RetryAfter
+     */
+    public function setDeltaSeconds($delta)
+    {
+        $this->deltaSeconds = (int) $delta;
+        return $this;
+    }
+
+    /**
+     * Get number of seconds
+     *
+     * @return int
+     */
+    public function getDeltaSeconds()
+    {
+        return $this->deltaSeconds;
+    }
+
+    /**
+     * Get header name
+     *
+     * @return string
+     */
+    public function getFieldName()
+    {
+        return 'Retry-After';
+    }
+
+    /**
+     * Returns date if it's set, or number of seconds
+     *
+     * @return int|string
+     */
+    public function getFieldValue()
+    {
+        return ($this->date === null) ? $this->deltaSeconds : $this->getDate();
+    }
+
+    /**
+     * Return header line
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return 'Retry-After: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Server.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.38
+ */
+class Server implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'server') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Server string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Server';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Server: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/SetCookie.php

@@ -0,0 +1,674 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+use DateTime;
+use Zend\Uri\UriFactory;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.ietf.org/rfc/rfc2109.txt
+ * @see http://www.w3.org/Protocols/rfc2109/rfc2109
+ */
+class SetCookie implements MultipleHeaderInterface
+{
+    /**
+     * Cookie name
+     *
+     * @var string|null
+     */
+    protected $name = null;
+
+    /**
+     * Cookie value
+     *
+     * @var string|null
+     */
+    protected $value = null;
+
+    /**
+     * Version
+     *
+     * @var int|null
+     */
+    protected $version = null;
+
+    /**
+     * Max Age
+     *
+     * @var int|null
+     */
+    protected $maxAge = null;
+
+    /**
+     * Cookie expiry date
+     *
+     * @var int|null
+     */
+    protected $expires = null;
+
+    /**
+     * Cookie domain
+     *
+     * @var string|null
+     */
+    protected $domain = null;
+
+    /**
+     * Cookie path
+     *
+     * @var string|null
+     */
+    protected $path = null;
+
+    /**
+     * Whether the cookie is secure or not
+     *
+     * @var bool|null
+     */
+    protected $secure = null;
+
+    /**
+     * If the value need to be quoted or not
+     *
+     * @var bool
+     */
+    protected $quoteFieldValue = false;
+
+    /**
+     * @var bool|null
+     */
+    protected $httponly = null;
+
+    /**
+     * @static
+     * @throws Exception\InvalidArgumentException
+     * @param  $headerLine
+     * @param  bool $bypassHeaderFieldName
+     * @return array|SetCookie
+     */
+    public static function fromString($headerLine, $bypassHeaderFieldName = false)
+    {
+        static $setCookieProcessor = null;
+
+        if ($setCookieProcessor === null) {
+            $setCookieClass = get_called_class();
+            $setCookieProcessor = function ($headerLine) use ($setCookieClass) {
+                $header = new $setCookieClass;
+                $keyValuePairs = preg_split('#;\s*#', $headerLine);
+
+                foreach ($keyValuePairs as $keyValue) {
+                    if (preg_match('#^(?P<headerKey>[^=]+)=\s*("?)(?P<headerValue>[^"]*)\2#', $keyValue, $matches)) {
+                        $headerKey  = $matches['headerKey'];
+                        $headerValue= $matches['headerValue'];
+                    } else {
+                        $headerKey = $keyValue;
+                        $headerValue = null;
+                    }
+
+                    // First K=V pair is always the cookie name and value
+                    if ($header->getName() === null) {
+                        $header->setName($headerKey);
+                        $header->setValue(urldecode($headerValue));
+                        continue;
+                    }
+
+                    // Process the remaining elements
+                    switch (str_replace(['-', '_'], '', strtolower($headerKey))) {
+                        case 'expires':
+                            $header->setExpires($headerValue);
+                            break;
+                        case 'domain':
+                            $header->setDomain($headerValue);
+                            break;
+                        case 'path':
+                            $header->setPath($headerValue);
+                            break;
+                        case 'secure':
+                            $header->setSecure(true);
+                            break;
+                        case 'httponly':
+                            $header->setHttponly(true);
+                            break;
+                        case 'version':
+                            $header->setVersion((int) $headerValue);
+                            break;
+                        case 'maxage':
+                            $header->setMaxAge((int) $headerValue);
+                            break;
+                        default:
+                            // Intentionally omitted
+                    }
+                }
+
+                return $header;
+            };
+        }
+
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+        HeaderValue::assertValid($value);
+
+        // some sites return set-cookie::value, this is to get rid of the second :
+        $name = (strtolower($name) =='set-cookie:') ? 'set-cookie' : $name;
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'set-cookie') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Set-Cookie string: "' . $name . '"');
+        }
+
+        $multipleHeaders = preg_split('#(?<!Sun|Mon|Tue|Wed|Thu|Fri|Sat),\s*#', $value);
+
+        if (count($multipleHeaders) <= 1) {
+            return $setCookieProcessor(array_pop($multipleHeaders));
+        } else {
+            $headers = [];
+            foreach ($multipleHeaders as $headerLine) {
+                $headers[] = $setCookieProcessor($headerLine);
+            }
+            return $headers;
+        }
+    }
+
+    /**
+     * Cookie object constructor
+     *
+     * @todo Add validation of each one of the parameters (legal domain, etc.)
+     *
+     * @param   string              $name
+     * @param   string              $value
+     * @param   int|string|DateTime $expires
+     * @param   string              $path
+     * @param   string              $domain
+     * @param   bool                $secure
+     * @param   bool                $httponly
+     * @param   string              $maxAge
+     * @param   int                 $version
+     */
+    public function __construct(
+        $name = null,
+        $value = null,
+        $expires = null,
+        $path = null,
+        $domain = null,
+        $secure = false,
+        $httponly = false,
+        $maxAge = null,
+        $version = null
+    ) {
+        $this->type = 'Cookie';
+
+        $this->setName($name)
+             ->setValue($value)
+             ->setVersion($version)
+             ->setMaxAge($maxAge)
+             ->setDomain($domain)
+             ->setExpires($expires)
+             ->setPath($path)
+             ->setSecure($secure)
+             ->setHttpOnly($httponly);
+    }
+
+    /**
+     * @return string 'Set-Cookie'
+     */
+    public function getFieldName()
+    {
+        return 'Set-Cookie';
+    }
+
+    /**
+     * @throws Exception\RuntimeException
+     * @return string
+     */
+    public function getFieldValue()
+    {
+        if ($this->getName() == '') {
+            return '';
+        }
+
+        $value = urlencode($this->getValue());
+        if ($this->hasQuoteFieldValue()) {
+            $value = '"'. $value . '"';
+        }
+
+        $fieldValue = $this->getName() . '=' . $value;
+
+        $version = $this->getVersion();
+        if ($version !== null) {
+            $fieldValue .= '; Version=' . $version;
+        }
+
+        $maxAge = $this->getMaxAge();
+        if ($maxAge!==null) {
+            $fieldValue .= '; Max-Age=' . $maxAge;
+        }
+
+        $expires = $this->getExpires();
+        if ($expires) {
+            $fieldValue .= '; Expires=' . $expires;
+        }
+
+        $domain = $this->getDomain();
+        if ($domain) {
+            $fieldValue .= '; Domain=' . $domain;
+        }
+
+        $path = $this->getPath();
+        if ($path) {
+            $fieldValue .= '; Path=' . $path;
+        }
+
+        if ($this->isSecure()) {
+            $fieldValue .= '; Secure';
+        }
+
+        if ($this->isHttponly()) {
+            $fieldValue .= '; HttpOnly';
+        }
+
+        return $fieldValue;
+    }
+
+    /**
+     * @param string $name
+     * @throws Exception\InvalidArgumentException
+     * @return SetCookie
+     */
+    public function setName($name)
+    {
+        HeaderValue::assertValid($name);
+        $this->name = $name;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string $value
+     * @return SetCookie
+     */
+    public function setValue($value)
+    {
+        $this->value = $value;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Set version
+     *
+     * @param int $version
+     * @throws Exception\InvalidArgumentException
+     * @return SetCookie
+     */
+    public function setVersion($version)
+    {
+        if ($version !== null && !is_int($version)) {
+            throw new Exception\InvalidArgumentException('Invalid Version number specified');
+        }
+        $this->version = $version;
+        return $this;
+    }
+
+    /**
+     * Get version
+     *
+     * @return int
+     */
+    public function getVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * Set Max-Age
+     *
+     * @param int $maxAge
+     * @throws Exception\InvalidArgumentException
+     * @return SetCookie
+     */
+    public function setMaxAge($maxAge)
+    {
+        if ($maxAge !== null && (!is_int($maxAge) || ($maxAge < 0))) {
+            throw new Exception\InvalidArgumentException('Invalid Max-Age number specified');
+        }
+        $this->maxAge = $maxAge;
+        return $this;
+    }
+
+    /**
+     * Get Max-Age
+     *
+     * @return int
+     */
+    public function getMaxAge()
+    {
+        return $this->maxAge;
+    }
+
+    /**
+     * Set Expires
+     *
+     * @param int|string|DateTime $expires
+     *
+     * @return self
+     *
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setExpires($expires)
+    {
+        if ($expires === null) {
+            $this->expires = null;
+            return $this;
+        }
+
+        if ($expires instanceof DateTime) {
+            $expires = $expires->format(DateTime::COOKIE);
+        }
+
+        $tsExpires = $expires;
+
+        if (is_string($expires)) {
+            $tsExpires = strtotime($expires);
+
+            // if $tsExpires is invalid and PHP is compiled as 32bit. Check if it fail reason is the 2038 bug
+            if (!is_int($tsExpires) && PHP_INT_SIZE === 4) {
+                $dateTime = new DateTime($expires);
+                if ($dateTime->format('Y') > 2038) {
+                    $tsExpires = PHP_INT_MAX;
+                }
+            }
+        }
+
+        if (!is_int($tsExpires) || $tsExpires < 0) {
+            throw new Exception\InvalidArgumentException('Invalid expires time specified');
+        }
+
+        $this->expires = $tsExpires;
+
+        return $this;
+    }
+
+    /**
+     * @param bool $inSeconds
+     * @return int|string
+     */
+    public function getExpires($inSeconds = false)
+    {
+        if ($this->expires === null) {
+            return;
+        }
+        if ($inSeconds) {
+            return $this->expires;
+        }
+        return gmdate('D, d-M-Y H:i:s', $this->expires) . ' GMT';
+    }
+
+    /**
+     * @param string $domain
+     * @return SetCookie
+     */
+    public function setDomain($domain)
+    {
+        HeaderValue::assertValid($domain);
+        $this->domain = $domain;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDomain()
+    {
+        return $this->domain;
+    }
+
+    /**
+     * @param string $path
+     * @return SetCookie
+     */
+    public function setPath($path)
+    {
+        HeaderValue::assertValid($path);
+        $this->path = $path;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPath()
+    {
+        return $this->path;
+    }
+
+    /**
+     * @param  bool $secure
+     * @return SetCookie
+     */
+    public function setSecure($secure)
+    {
+        if (null !== $secure) {
+            $secure = (bool) $secure;
+        }
+        $this->secure = $secure;
+        return $this;
+    }
+
+    /**
+     * Set whether the value for this cookie should be quoted
+     *
+     * @param  bool $quotedValue
+     * @return SetCookie
+     */
+    public function setQuoteFieldValue($quotedValue)
+    {
+        $this->quoteFieldValue = (bool) $quotedValue;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSecure()
+    {
+        return $this->secure;
+    }
+
+    /**
+     * @param  bool $httponly
+     * @return SetCookie
+     */
+    public function setHttponly($httponly)
+    {
+        if (null !== $httponly) {
+            $httponly = (bool) $httponly;
+        }
+        $this->httponly = $httponly;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isHttponly()
+    {
+        return $this->httponly;
+    }
+
+    /**
+     * Check whether the cookie has expired
+     *
+     * Always returns false if the cookie is a session cookie (has no expiry time)
+     *
+     * @param int $now Timestamp to consider as "now"
+     * @return bool
+     */
+    public function isExpired($now = null)
+    {
+        if ($now === null) {
+            $now = time();
+        }
+
+        if (is_int($this->expires) && $this->expires < $now) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Check whether the cookie is a session cookie (has no expiry time set)
+     *
+     * @return bool
+     */
+    public function isSessionCookie()
+    {
+        return ($this->expires === null);
+    }
+
+    /**
+     * Check whether the value for this cookie should be quoted
+     *
+     * @return bool
+     */
+    public function hasQuoteFieldValue()
+    {
+        return $this->quoteFieldValue;
+    }
+
+    public function isValidForRequest($requestDomain, $path, $isSecure = false)
+    {
+        if ($this->getDomain() && (strrpos($requestDomain, $this->getDomain()) === false)) {
+            return false;
+        }
+
+        if ($this->getPath() && (strpos($path, $this->getPath()) !== 0)) {
+            return false;
+        }
+
+        if ($this->secure && $this->isSecure()!==$isSecure) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks whether the cookie should be sent or not in a specific scenario
+     *
+     * @param string|\Zend\Uri\Uri $uri URI to check against (secure, domain, path)
+     * @param bool $matchSessionCookies Whether to send session cookies
+     * @param int $now Override the current time when checking for expiry time
+     * @return bool
+     * @throws Exception\InvalidArgumentException If URI does not have HTTP or HTTPS scheme.
+     */
+    public function match($uri, $matchSessionCookies = true, $now = null)
+    {
+        if (is_string($uri)) {
+            $uri = UriFactory::factory($uri);
+        }
+
+        // Make sure we have a valid Zend_Uri_Http object
+        if (! ($uri->isValid() && ($uri->getScheme() == 'http' || $uri->getScheme() =='https'))) {
+            throw new Exception\InvalidArgumentException('Passed URI is not a valid HTTP or HTTPS URI');
+        }
+
+        // Check that the cookie is secure (if required) and not expired
+        if ($this->secure && $uri->getScheme() != 'https') {
+            return false;
+        }
+        if ($this->isExpired($now)) {
+            return false;
+        }
+        if ($this->isSessionCookie() && ! $matchSessionCookies) {
+            return false;
+        }
+
+        // Check if the domain matches
+        if (! self::matchCookieDomain($this->getDomain(), $uri->getHost())) {
+            return false;
+        }
+
+        // Check that path matches using prefix match
+        if (! self::matchCookiePath($this->getPath(), $uri->getPath())) {
+            return false;
+        }
+
+        // If we didn't die until now, return true.
+        return true;
+    }
+
+    /**
+     * Check if a cookie's domain matches a host name.
+     *
+     * Used by Zend\Http\Cookies for cookie matching
+     *
+     * @param  string $cookieDomain
+     * @param  string $host
+     *
+     * @return bool
+     */
+    public static function matchCookieDomain($cookieDomain, $host)
+    {
+        $cookieDomain = strtolower($cookieDomain);
+        $host = strtolower($host);
+        // Check for either exact match or suffix match
+        return ($cookieDomain == $host ||
+                preg_match('/' . preg_quote($cookieDomain) . '$/', $host));
+    }
+
+    /**
+     * Check if a cookie's path matches a URL path
+     *
+     * Used by Zend\Http\Cookies for cookie matching
+     *
+     * @param  string $cookiePath
+     * @param  string $path
+     * @return bool
+     */
+    public static function matchCookiePath($cookiePath, $path)
+    {
+        return (strpos($path, $cookiePath) === 0);
+    }
+
+    public function toString()
+    {
+        return 'Set-Cookie: ' . $this->getFieldValue();
+    }
+
+    public function toStringMultipleHeaders(array $headers)
+    {
+        $headerLine = $this->toString();
+        /* @var $header SetCookie */
+        foreach ($headers as $header) {
+            if (!$header instanceof SetCookie) {
+                throw new Exception\RuntimeException(
+                    'The SetCookie multiple header implementation can only accept an array of SetCookie headers'
+                );
+            }
+            $headerLine .= "\n" . $header->toString();
+        }
+        return $headerLine;
+    }
+}

vendor/zendframework/zend-http/src/Header/TE.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.39
+ */
+class TE implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'te') {
+            throw new Exception\InvalidArgumentException('Invalid header line for TE string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'TE';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'TE: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Trailer.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.40
+ */
+class Trailer implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'trailer') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Trailer string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Trailer';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Trailer: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/TransferEncoding.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.41
+ */
+class TransferEncoding implements HeaderInterface
+{
+    /**
+     * @var string
+    */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'transfer-encoding') {
+            throw new Exception\InvalidArgumentException(
+                'Invalid header line for Transfer-Encoding string: "' . $name . '"'
+            );
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Transfer-Encoding';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Transfer-Encoding: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Upgrade.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.42
+ */
+class Upgrade implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'upgrade') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Upgrade string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Upgrade';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Upgrade: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/UserAgent.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
+ */
+class UserAgent implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (str_replace(['_', ' ', '.'], '-', strtolower($name)) !== 'user-agent') {
+            throw new Exception\InvalidArgumentException('Invalid header line for User-Agent string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'User-Agent';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'User-Agent: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Vary.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44
+ */
+class Vary implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'vary') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Vary string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Vary';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Vary: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/Via.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.45
+ */
+class Via implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'via') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Via string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Via';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Via: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/Header/WWWAuthenticate.php

@@ -0,0 +1,78 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.47
+ */
+class WWWAuthenticate implements MultipleHeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'www-authenticate') {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid header line for WWW-Authenticate string: "%s"',
+                $name
+            ));
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'WWW-Authenticate';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'WWW-Authenticate: ' . $this->getFieldValue();
+    }
+
+    public function toStringMultipleHeaders(array $headers)
+    {
+        $strings = [$this->toString()];
+        foreach ($headers as $header) {
+            if (!$header instanceof WWWAuthenticate) {
+                throw new Exception\RuntimeException(
+                    'The WWWAuthenticate multiple header implementation can only'
+                    . ' accept an array of WWWAuthenticate headers'
+                );
+            }
+            $strings[] = $header->toString();
+        }
+        return implode("\r\n", $strings);
+    }
+}

vendor/zendframework/zend-http/src/Header/Warning.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\Header;
+
+/**
+ * @throws Exception\InvalidArgumentException
+ * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.46
+ */
+class Warning implements HeaderInterface
+{
+    /**
+     * @var string
+     */
+    protected $value;
+
+    public static function fromString($headerLine)
+    {
+        list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
+
+        // check to ensure proper header type for this factory
+        if (strtolower($name) !== 'warning') {
+            throw new Exception\InvalidArgumentException('Invalid header line for Warning string: "' . $name . '"');
+        }
+
+        // @todo implementation details
+        $header = new static($value);
+
+        return $header;
+    }
+
+    public function __construct($value = null)
+    {
+        if ($value) {
+            HeaderValue::assertValid($value);
+            $this->value = $value;
+        }
+    }
+
+    public function getFieldName()
+    {
+        return 'Warning';
+    }
+
+    public function getFieldValue()
+    {
+        return $this->value;
+    }
+
+    public function toString()
+    {
+        return 'Warning: ' . $this->getFieldValue();
+    }
+}

vendor/zendframework/zend-http/src/HeaderLoader.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http;
+
+use Zend\Loader\PluginClassLoader;
+
+/**
+ * Plugin Class Loader implementation for HTTP headers
+ */
+class HeaderLoader extends PluginClassLoader
+{
+    /**
+     * @var array Pre-aliased Header plugins
+     */
+    protected $plugins = [
+        'accept'             => 'Zend\Http\Header\Accept',
+        'acceptcharset'      => 'Zend\Http\Header\AcceptCharset',
+        'acceptencoding'     => 'Zend\Http\Header\AcceptEncoding',
+        'acceptlanguage'     => 'Zend\Http\Header\AcceptLanguage',
+        'acceptranges'       => 'Zend\Http\Header\AcceptRanges',
+        'age'                => 'Zend\Http\Header\Age',
+        'allow'              => 'Zend\Http\Header\Allow',
+        'authenticationinfo' => 'Zend\Http\Header\AuthenticationInfo',
+        'authorization'      => 'Zend\Http\Header\Authorization',
+        'cachecontrol'       => 'Zend\Http\Header\CacheControl',
+        'connection'         => 'Zend\Http\Header\Connection',
+        'contentdisposition' => 'Zend\Http\Header\ContentDisposition',
+        'contentencoding'    => 'Zend\Http\Header\ContentEncoding',
+        'contentlanguage'    => 'Zend\Http\Header\ContentLanguage',
+        'contentlength'      => 'Zend\Http\Header\ContentLength',
+        'contentlocation'    => 'Zend\Http\Header\ContentLocation',
+        'contentmd5'         => 'Zend\Http\Header\ContentMD5',
+        'contentrange'       => 'Zend\Http\Header\ContentRange',
+        'contenttransferencoding' => 'Zend\Http\Header\ContentTransferEncoding',
+        'contenttype'        => 'Zend\Http\Header\ContentType',
+        'cookie'             => 'Zend\Http\Header\Cookie',
+        'date'               => 'Zend\Http\Header\Date',
+        'etag'               => 'Zend\Http\Header\Etag',
+        'expect'             => 'Zend\Http\Header\Expect',
+        'expires'            => 'Zend\Http\Header\Expires',
+        'from'               => 'Zend\Http\Header\From',
+        'host'               => 'Zend\Http\Header\Host',
+        'ifmatch'            => 'Zend\Http\Header\IfMatch',
+        'ifmodifiedsince'    => 'Zend\Http\Header\IfModifiedSince',
+        'ifnonematch'        => 'Zend\Http\Header\IfNoneMatch',
+        'ifrange'            => 'Zend\Http\Header\IfRange',
+        'ifunmodifiedsince'  => 'Zend\Http\Header\IfUnmodifiedSince',
+        'keepalive'          => 'Zend\Http\Header\KeepAlive',
+        'lastmodified'       => 'Zend\Http\Header\LastModified',
+        'location'           => 'Zend\Http\Header\Location',
+        'maxforwards'        => 'Zend\Http\Header\MaxForwards',
+        'origin'             => 'Zend\Http\Header\Origin',
+        'pragma'             => 'Zend\Http\Header\Pragma',
+        'proxyauthenticate'  => 'Zend\Http\Header\ProxyAuthenticate',
+        'proxyauthorization' => 'Zend\Http\Header\ProxyAuthorization',
+        'range'              => 'Zend\Http\Header\Range',
+        'referer'            => 'Zend\Http\Header\Referer',
+        'refresh'            => 'Zend\Http\Header\Refresh',
+        'retryafter'         => 'Zend\Http\Header\RetryAfter',
+        'server'             => 'Zend\Http\Header\Server',
+        'setcookie'          => 'Zend\Http\Header\SetCookie',
+        'te'                 => 'Zend\Http\Header\TE',
+        'trailer'            => 'Zend\Http\Header\Trailer',
+        'transferencoding'   => 'Zend\Http\Header\TransferEncoding',
+        'upgrade'            => 'Zend\Http\Header\Upgrade',
+        'useragent'          => 'Zend\Http\Header\UserAgent',
+        'vary'               => 'Zend\Http\Header\Vary',
+        'via'                => 'Zend\Http\Header\Via',
+        'warning'            => 'Zend\Http\Header\Warning',
+        'wwwauthenticate'    => 'Zend\Http\Header\WWWAuthenticate'
+    ];
+}

vendor/zendframework/zend-http/src/Headers.php

@@ -0,0 +1,472 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http;
+
+use ArrayIterator;
+use Countable;
+use Iterator;
+use Traversable;
+use Zend\Loader\PluginClassLocator;
+
+/**
+ * Basic HTTP headers collection functionality
+ * Handles aggregation of headers
+ *
+ * @see        http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
+ */
+class Headers implements Countable, Iterator
+{
+    /**
+     * @var PluginClassLocator
+     */
+    protected $pluginClassLoader = null;
+
+    /**
+     * @var array key names for $headers array
+     */
+    protected $headersKeys = [];
+
+    /**
+     * @var array Array of header array information or Header instances
+     */
+    protected $headers = [];
+
+    /**
+     * Populates headers from string representation
+     *
+     * Parses a string for headers, and aggregates them, in order, in the
+     * current instance, primarily as strings until they are needed (they
+     * will be lazy loaded)
+     *
+     * @param  string $string
+     * @return Headers
+     * @throws Exception\RuntimeException
+     */
+    public static function fromString($string)
+    {
+        $headers   = new static();
+        $current   = [];
+        $emptyLine = 0;
+
+        // iterate the header lines, some might be continuations
+        foreach (explode("\r\n", $string) as $line) {
+            // CRLF*2 is end of headers; an empty line by itself or between header lines
+            // is an attempt at CRLF injection.
+            if (preg_match('/^\s*$/', $line)) {
+                // empty line indicates end of headers
+                $emptyLine += 1;
+                if ($emptyLine > 2) {
+                    throw new Exception\RuntimeException('Malformed header detected');
+                }
+                continue;
+            }
+
+            if ($emptyLine) {
+                throw new Exception\RuntimeException('Malformed header detected');
+            }
+
+            // check if a header name is present
+            if (preg_match('/^(?P<name>[^()><@,;:\"\\/\[\]?={} \t]+):.*$/', $line, $matches)) {
+                if ($current) {
+                    // a header name was present, then store the current complete line
+                    $headers->headersKeys[] = static::createKey($current['name']);
+                    $headers->headers[]     = $current;
+                }
+                $current = [
+                    'name' => $matches['name'],
+                    'line' => trim($line)
+                ];
+
+                continue;
+            }
+
+            if (preg_match("/^[ \t][^\r\n]*$/", $line, $matches)) {
+                // continuation: append to current line
+                $current['line'] .= trim($line);
+                continue;
+            }
+
+            // Line does not match header format!
+            throw new Exception\RuntimeException(sprintf(
+                'Line "%s" does not match header format!',
+                $line
+            ));
+        }
+        if ($current) {
+            $headers->headersKeys[] = static::createKey($current['name']);
+            $headers->headers[]     = $current;
+        }
+        return $headers;
+    }
+
+    /**
+     * Set an alternate implementation for the PluginClassLoader
+     *
+     * @param \Zend\Loader\PluginClassLocator $pluginClassLoader
+     * @return Headers
+     */
+    public function setPluginClassLoader(PluginClassLocator $pluginClassLoader)
+    {
+        $this->pluginClassLoader = $pluginClassLoader;
+        return $this;
+    }
+
+    /**
+     * Return an instance of a PluginClassLocator, lazyload and inject map if necessary
+     *
+     * @return PluginClassLocator
+     */
+    public function getPluginClassLoader()
+    {
+        if ($this->pluginClassLoader === null) {
+            $this->pluginClassLoader = new HeaderLoader();
+        }
+        return $this->pluginClassLoader;
+    }
+
+    /**
+     * Add many headers at once
+     *
+     * Expects an array (or Traversable object) of type/value pairs.
+     *
+     * @param  array|Traversable $headers
+     * @return Headers
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addHeaders($headers)
+    {
+        if (!is_array($headers) && !$headers instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Expected array or Traversable; received "%s"',
+                (is_object($headers) ? get_class($headers) : gettype($headers))
+            ));
+        }
+
+        foreach ($headers as $name => $value) {
+            if (is_int($name)) {
+                if (is_string($value)) {
+                    $this->addHeaderLine($value);
+                } elseif (is_array($value) && count($value) == 1) {
+                    $this->addHeaderLine(key($value), current($value));
+                } elseif (is_array($value) && count($value) == 2) {
+                    $this->addHeaderLine($value[0], $value[1]);
+                } elseif ($value instanceof Header\HeaderInterface) {
+                    $this->addHeader($value);
+                }
+            } elseif (is_string($name)) {
+                $this->addHeaderLine($name, $value);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Add a raw header line, either in name => value, or as a single string 'name: value'
+     *
+     * This method allows for lazy-loading in that the parsing and instantiation of Header object
+     * will be delayed until they are retrieved by either get() or current()
+     *
+     * @throws Exception\InvalidArgumentException
+     * @param string $headerFieldNameOrLine
+     * @param string $fieldValue optional
+     * @return Headers
+     */
+    public function addHeaderLine($headerFieldNameOrLine, $fieldValue = null)
+    {
+        $matches = null;
+        if (preg_match('/^(?P<name>[^()><@,;:\"\\/\[\]?=}{ \t]+):.*$/', $headerFieldNameOrLine, $matches)
+            && $fieldValue === null) {
+            // is a header
+            $headerName = $matches['name'];
+            $headerKey  = static::createKey($matches['name']);
+            $line = $headerFieldNameOrLine;
+        } elseif ($fieldValue === null) {
+            throw new Exception\InvalidArgumentException('A field name was provided without a field value');
+        } else {
+            $headerName = $headerFieldNameOrLine;
+            $headerKey  = static::createKey($headerFieldNameOrLine);
+            if (is_array($fieldValue)) {
+                $fieldValue = implode(', ', $fieldValue);
+            }
+            $line = $headerFieldNameOrLine . ': ' . $fieldValue;
+        }
+
+        $this->headersKeys[] = $headerKey;
+        $this->headers[]     = ['name' => $headerName, 'line' => $line];
+
+        return $this;
+    }
+
+    /**
+     * Add a Header to this container, for raw values @see addHeaderLine() and addHeaders()
+     *
+     * @param  Header\HeaderInterface $header
+     * @return Headers
+     */
+    public function addHeader(Header\HeaderInterface $header)
+    {
+        $this->headersKeys[] = static::createKey($header->getFieldName());
+        $this->headers[]     = $header;
+
+        return $this;
+    }
+
+    /**
+     * Remove a Header from the container
+     *
+     * @param Header\HeaderInterface $header
+     * @return bool
+     */
+    public function removeHeader(Header\HeaderInterface $header)
+    {
+        $index = array_search($header, $this->headers, true);
+        if ($index !== false) {
+            unset($this->headersKeys[$index]);
+            unset($this->headers[$index]);
+
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Clear all headers
+     *
+     * Removes all headers from queue
+     *
+     * @return Headers
+     */
+    public function clearHeaders()
+    {
+        $this->headers = $this->headersKeys = [];
+        return $this;
+    }
+
+    /**
+     * Get all headers of a certain name/type
+     *
+     * @param  string $name
+     * @return bool|Header\HeaderInterface|ArrayIterator
+     */
+    public function get($name)
+    {
+        $key = static::createKey($name);
+        if (!in_array($key, $this->headersKeys)) {
+            return false;
+        }
+
+        $class = ($this->getPluginClassLoader()->load($key)) ?: 'Zend\Http\Header\GenericHeader';
+
+        if (in_array('Zend\Http\Header\MultipleHeaderInterface', class_implements($class, true))) {
+            $headers = [];
+            foreach (array_keys($this->headersKeys, $key) as $index) {
+                if (is_array($this->headers[$index])) {
+                    $this->lazyLoadHeader($index);
+                }
+            }
+            foreach (array_keys($this->headersKeys, $key) as $index) {
+                $headers[] = $this->headers[$index];
+            }
+            return new ArrayIterator($headers);
+        }
+
+        $index = array_search($key, $this->headersKeys);
+        if ($index === false) {
+            return false;
+        }
+
+        if (is_array($this->headers[$index])) {
+            return $this->lazyLoadHeader($index);
+        }
+        return $this->headers[$index];
+    }
+
+    /**
+     * Test for existence of a type of header
+     *
+     * @param  string $name
+     * @return bool
+     */
+    public function has($name)
+    {
+        return (in_array(static::createKey($name), $this->headersKeys));
+    }
+
+    /**
+     * Advance the pointer for this object as an iterator
+     *
+     * @return void
+     */
+    public function next()
+    {
+        next($this->headers);
+    }
+
+    /**
+     * Return the current key for this object as an iterator
+     *
+     * @return mixed
+     */
+    public function key()
+    {
+        return (key($this->headers));
+    }
+
+    /**
+     * Is this iterator still valid?
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        return (current($this->headers) !== false);
+    }
+
+    /**
+     * Reset the internal pointer for this object as an iterator
+     *
+     * @return void
+     */
+    public function rewind()
+    {
+        reset($this->headers);
+    }
+
+    /**
+     * Return the current value for this iterator, lazy loading it if need be
+     *
+     * @return array|Header\HeaderInterface
+     */
+    public function current()
+    {
+        $current = current($this->headers);
+        if (is_array($current)) {
+            $current = $this->lazyLoadHeader(key($this->headers));
+        }
+        return $current;
+    }
+
+    /**
+     * Return the number of headers in this contain, if all headers have not been parsed, actual count could
+     * increase if MultipleHeader objects exist in the Request/Response.  If you need an exact count, iterate
+     *
+     * @return int count of currently known headers
+     */
+    public function count()
+    {
+        return count($this->headers);
+    }
+
+    /**
+     * Render all headers at once
+     *
+     * This method handles the normal iteration of headers; it is up to the
+     * concrete classes to prepend with the appropriate status/request line.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        $headers = '';
+        foreach ($this->toArray() as $fieldName => $fieldValue) {
+            if (is_array($fieldValue)) {
+                // Handle multi-value headers
+                foreach ($fieldValue as $value) {
+                    $headers .= $fieldName . ': ' . $value . "\r\n";
+                }
+                continue;
+            }
+            // Handle single-value headers
+            $headers .= $fieldName . ': ' . $fieldValue . "\r\n";
+        }
+        return $headers;
+    }
+
+    /**
+     * Return the headers container as an array
+     *
+     * @todo determine how to produce single line headers, if they are supported
+     * @return array
+     */
+    public function toArray()
+    {
+        $headers = [];
+        /* @var $header Header\HeaderInterface */
+        foreach ($this->headers as $header) {
+            if ($header instanceof Header\MultipleHeaderInterface) {
+                $name = $header->getFieldName();
+                if (!isset($headers[$name])) {
+                    $headers[$name] = [];
+                }
+                $headers[$name][] = $header->getFieldValue();
+            } elseif ($header instanceof Header\HeaderInterface) {
+                $headers[$header->getFieldName()] = $header->getFieldValue();
+            } else {
+                $matches = null;
+                preg_match('/^(?P<name>[^()><@,;:\"\\/\[\]?=}{ \t]+):\s*(?P<value>.*)$/', $header['line'], $matches);
+                if ($matches) {
+                    $headers[$matches['name']] = $matches['value'];
+                }
+            }
+        }
+        return $headers;
+    }
+
+    /**
+     * By calling this, it will force parsing and loading of all headers, after this count() will be accurate
+     *
+     * @return bool
+     */
+    public function forceLoading()
+    {
+        foreach ($this as $item) {
+            // $item should now be loaded
+        }
+        return true;
+    }
+
+    /**
+     * @param $index
+     * @return mixed|void
+     */
+    protected function lazyLoadHeader($index)
+    {
+        $current = $this->headers[$index];
+
+        $key = $this->headersKeys[$index];
+        /* @var $class Header\HeaderInterface */
+        $class = ($this->getPluginClassLoader()->load($key)) ?: 'Zend\Http\Header\GenericHeader';
+
+        $headers = $class::fromString($current['line']);
+        if (is_array($headers)) {
+            $this->headers[$index] = $current = array_shift($headers);
+            foreach ($headers as $header) {
+                $this->headersKeys[] = $key;
+                $this->headers[]     = $header;
+            }
+            return $current;
+        }
+
+        $this->headers[$index] = $current = $headers;
+        return $current;
+    }
+
+    /**
+     * Create array key from header name
+     *
+     * @param string $name
+     * @return string
+     */
+    protected static function createKey($name)
+    {
+        return str_replace(['-', '_', ' ', '.'], '', strtolower($name));
+    }
+}

vendor/zendframework/zend-http/src/PhpEnvironment/RemoteAddress.php

@@ -0,0 +1,171 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Http\PhpEnvironment;
+
+/**
+ * Functionality for determining client IP address.
+ */
+class RemoteAddress
+{
+    /**
+     * Whether to use proxy addresses or not.
+     *
+     * As default this setting is disabled - IP address is mostly needed to increase
+     * security. HTTP_* are not reliable since can easily be spoofed. It can be enabled
+     * just for more flexibility, but if user uses proxy to connect to trusted services
+     * it's his/her own risk, only reliable field for IP address is $_SERVER['REMOTE_ADDR'].
+     *
+     * @var bool
+     */
+    protected $useProxy = false;
+
+    /**
+     * List of trusted proxy IP addresses
+     *
+     * @var array
+     */
+    protected $trustedProxies = [];
+
+    /**
+     * HTTP header to introspect for proxies
+     *
+     * @var string
+     */
+    protected $proxyHeader = 'HTTP_X_FORWARDED_FOR';
+
+
+    /**
+     * Changes proxy handling setting.
+     *
+     * This must be static method, since validators are recovered automatically
+     * at session read, so this is the only way to switch setting.
+     *
+     * @param  bool  $useProxy Whether to check also proxied IP addresses.
+     * @return RemoteAddress
+     */
+    public function setUseProxy($useProxy = true)
+    {
+        $this->useProxy = $useProxy;
+        return $this;
+    }
+
+    /**
+     * Checks proxy handling setting.
+     *
+     * @return bool Current setting value.
+     */
+    public function getUseProxy()
+    {
+        return $this->useProxy;
+    }
+
+    /**
+     * Set list of trusted proxy addresses
+     *
+     * @param  array $trustedProxies
+     * @return RemoteAddress
+     */
+    public function setTrustedProxies(array $trustedProxies)
+    {
+        $this->trustedProxies = $trustedProxies;
+        return $this;
+    }
+
+    /**
+     * Set the header to introspect for proxy IPs
+     *
+     * @param  string $header
+     * @return RemoteAddress
+     */
+    public function setProxyHeader($header = 'X-Forwarded-For')
+    {
+        $this->proxyHeader = $this->normalizeProxyHeader($header);
+        return $this;
+    }
+
+    /**
+     * Returns client IP address.
+     *
+     * @return string IP address.
+     */
+    public function getIpAddress()
+    {
+        $ip = $this->getIpAddressFromProxy();
+        if ($ip) {
+            return $ip;
+        }
+
+        // direct IP address
+        if (isset($_SERVER['REMOTE_ADDR'])) {
+            return $_SERVER['REMOTE_ADDR'];
+        }
+
+        return '';
+    }
+
+    /**
+     * Attempt to get the IP address for a proxied client
+     *
+     * @see http://tools.ietf.org/html/draft-ietf-appsawg-http-forwarded-10#section-5.2
+     * @return false|string
+     */
+    protected function getIpAddressFromProxy()
+    {
+        if (!$this->useProxy
+            || (isset($_SERVER['REMOTE_ADDR']) && !in_array($_SERVER['REMOTE_ADDR'], $this->trustedProxies))
+        ) {
+            return false;
+        }
+
+        $header = $this->proxyHeader;
+        if (!isset($_SERVER[$header]) || empty($_SERVER[$header])) {
+            return false;
+        }
+
+        // Extract IPs
+        $ips = explode(',', $_SERVER[$header]);
+        // trim, so we can compare against trusted proxies properly
+        $ips = array_map('trim', $ips);
+        // remove trusted proxy IPs
+        $ips = array_diff($ips, $this->trustedProxies);
+
+        // Any left?
+        if (empty($ips)) {
+            return false;
+        }
+
+        // Since we've removed any known, trusted proxy servers, the right-most
+        // address represents the first IP we do not know about -- i.e., we do
+        // not know if it is a proxy server, or a client. As such, we treat it
+        // as the originating IP.
+        // @see http://en.wikipedia.org/wiki/X-Forwarded-For
+        $ip = array_pop($ips);
+        return $ip;
+    }
+
+    /**
+     * Normalize a header string
+     *
+     * Normalizes a header string to a format that is compatible with
+     * $_SERVER
+     *
+     * @param  string $header
+     * @return string
+     */
+    protected function normalizeProxyHeader($header)
+    {
+        $header = strtoupper($header);
+        $header = str_replace('-', '_', $header);
+        if (0 !== strpos($header, 'HTTP_')) {
+            $header = 'HTTP_' . $header;
+        }
+        return $header;
+    }
+}