diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-includes/class-requests.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/class-requests.php	Mon Oct 14 17:39:30 2019 +0200
@@ -0,0 +1,980 @@
+<?php
+/**
+ * Requests for PHP
+ *
+ * Inspired by Requests for Python.
+ *
+ * Based on concepts from SimplePie_File, RequestCore and WP_Http.
+ *
+ * @package Requests
+ */
+
+/**
+ * Requests for PHP
+ *
+ * Inspired by Requests for Python.
+ *
+ * Based on concepts from SimplePie_File, RequestCore and WP_Http.
+ *
+ * @package Requests
+ */
+class Requests {
+	/**
+	 * POST method
+	 *
+	 * @var string
+	 */
+	const POST = 'POST';
+
+	/**
+	 * PUT method
+	 *
+	 * @var string
+	 */
+	const PUT = 'PUT';
+
+	/**
+	 * GET method
+	 *
+	 * @var string
+	 */
+	const GET = 'GET';
+
+	/**
+	 * HEAD method
+	 *
+	 * @var string
+	 */
+	const HEAD = 'HEAD';
+
+	/**
+	 * DELETE method
+	 *
+	 * @var string
+	 */
+	const DELETE = 'DELETE';
+
+	/**
+	 * OPTIONS method
+	 *
+	 * @var string
+	 */
+	const OPTIONS = 'OPTIONS';
+
+	/**
+	 * TRACE method
+	 *
+	 * @var string
+	 */
+	const TRACE = 'TRACE';
+
+	/**
+	 * PATCH method
+	 *
+	 * @link https://tools.ietf.org/html/rfc5789
+	 * @var string
+	 */
+	const PATCH = 'PATCH';
+
+	/**
+	 * Default size of buffer size to read streams
+	 *
+	 * @var integer
+	 */
+	const BUFFER_SIZE = 1160;
+
+	/**
+	 * Current version of Requests
+	 *
+	 * @var string
+	 */
+	const VERSION = '1.7';
+
+	/**
+	 * Registered transport classes
+	 *
+	 * @var array
+	 */
+	protected static $transports = array();
+
+	/**
+	 * Selected transport name
+	 *
+	 * Use {@see get_transport()} instead
+	 *
+	 * @var array
+	 */
+	public static $transport = array();
+
+	/**
+	 * Default certificate path.
+	 *
+	 * @see Requests::get_certificate_path()
+	 * @see Requests::set_certificate_path()
+	 *
+	 * @var string
+	 */
+	protected static $certificate_path;
+
+	/**
+	 * This is a static class, do not instantiate it
+	 *
+	 * @codeCoverageIgnore
+	 */
+	private function __construct() {}
+
+	/**
+	 * Autoloader for Requests
+	 *
+	 * Register this with {@see register_autoloader()} if you'd like to avoid
+	 * having to create your own.
+	 *
+	 * (You can also use `spl_autoload_register` directly if you'd prefer.)
+	 *
+	 * @codeCoverageIgnore
+	 *
+	 * @param string $class Class name to load
+	 */
+	public static function autoloader($class) {
+		// Check that the class starts with "Requests"
+		if (strpos($class, 'Requests') !== 0) {
+			return;
+		}
+
+		$file = str_replace('_', '/', $class);
+		if (file_exists(dirname(__FILE__) . '/' . $file . '.php')) {
+			require_once(dirname(__FILE__) . '/' . $file . '.php');
+		}
+	}
+
+	/**
+	 * Register the built-in autoloader
+	 *
+	 * @codeCoverageIgnore
+	 */
+	public static function register_autoloader() {
+		spl_autoload_register(array('Requests', 'autoloader'));
+	}
+
+	/**
+	 * Register a transport
+	 *
+	 * @param string $transport Transport class to add, must support the Requests_Transport interface
+	 */
+	public static function add_transport($transport) {
+		if (empty(self::$transports)) {
+			self::$transports = array(
+				'Requests_Transport_cURL',
+				'Requests_Transport_fsockopen',
+			);
+		}
+
+		self::$transports = array_merge(self::$transports, array($transport));
+	}
+
+	/**
+	 * Get a working transport
+	 *
+	 * @throws Requests_Exception If no valid transport is found (`notransport`)
+	 * @return Requests_Transport
+	 */
+	protected static function get_transport($capabilities = array()) {
+		// Caching code, don't bother testing coverage
+		// @codeCoverageIgnoreStart
+		// array of capabilities as a string to be used as an array key
+		ksort($capabilities);
+		$cap_string = serialize($capabilities);
+
+		// Don't search for a transport if it's already been done for these $capabilities
+		if (isset(self::$transport[$cap_string]) && self::$transport[$cap_string] !== null) {
+			return new self::$transport[$cap_string]();
+		}
+		// @codeCoverageIgnoreEnd
+
+		if (empty(self::$transports)) {
+			self::$transports = array(
+				'Requests_Transport_cURL',
+				'Requests_Transport_fsockopen',
+			);
+		}
+
+		// Find us a working transport
+		foreach (self::$transports as $class) {
+			if (!class_exists($class)) {
+				continue;
+			}
+
+			$result = call_user_func(array($class, 'test'), $capabilities);
+			if ($result) {
+				self::$transport[$cap_string] = $class;
+				break;
+			}
+		}
+		if (self::$transport[$cap_string] === null) {
+			throw new Requests_Exception('No working transports found', 'notransport', self::$transports);
+		}
+
+		return new self::$transport[$cap_string]();
+	}
+
+	/**#@+
+	 * @see request()
+	 * @param string $url
+	 * @param array $headers
+	 * @param array $options
+	 * @return Requests_Response
+	 */
+	/**
+	 * Send a GET request
+	 */
+	public static function get($url, $headers = array(), $options = array()) {
+		return self::request($url, $headers, null, self::GET, $options);
+	}
+
+	/**
+	 * Send a HEAD request
+	 */
+	public static function head($url, $headers = array(), $options = array()) {
+		return self::request($url, $headers, null, self::HEAD, $options);
+	}
+
+	/**
+	 * Send a DELETE request
+	 */
+	public static function delete($url, $headers = array(), $options = array()) {
+		return self::request($url, $headers, null, self::DELETE, $options);
+	}
+
+	/**
+	 * Send a TRACE request
+	 */
+	public static function trace($url, $headers = array(), $options = array()) {
+		return self::request($url, $headers, null, self::TRACE, $options);
+	}
+	/**#@-*/
+
+	/**#@+
+	 * @see request()
+	 * @param string $url
+	 * @param array $headers
+	 * @param array $data
+	 * @param array $options
+	 * @return Requests_Response
+	 */
+	/**
+	 * Send a POST request
+	 */
+	public static function post($url, $headers = array(), $data = array(), $options = array()) {
+		return self::request($url, $headers, $data, self::POST, $options);
+	}
+	/**
+	 * Send a PUT request
+	 */
+	public static function put($url, $headers = array(), $data = array(), $options = array()) {
+		return self::request($url, $headers, $data, self::PUT, $options);
+	}
+
+	/**
+	 * Send an OPTIONS request
+	 */
+	public static function options($url, $headers = array(), $data = array(), $options = array()) {
+		return self::request($url, $headers, $data, self::OPTIONS, $options);
+	}
+
+	/**
+	 * Send a PATCH request
+	 *
+	 * Note: Unlike {@see post} and {@see put}, `$headers` is required, as the
+	 * specification recommends that should send an ETag
+	 *
+	 * @link https://tools.ietf.org/html/rfc5789
+	 */
+	public static function patch($url, $headers, $data = array(), $options = array()) {
+		return self::request($url, $headers, $data, self::PATCH, $options);
+	}
+	/**#@-*/
+
+	/**
+	 * Main interface for HTTP requests
+	 *
+	 * This method initiates a request and sends it via a transport before
+	 * parsing.
+	 *
+	 * The `$options` parameter takes an associative array with the following
+	 * options:
+	 *
+	 * - `timeout`: How long should we wait for a response?
+	 *    Note: for cURL, a minimum of 1 second applies, as DNS resolution
+	 *    operates at second-resolution only.
+	 *    (float, seconds with a millisecond precision, default: 10, example: 0.01)
+	 * - `connect_timeout`: How long should we wait while trying to connect?
+	 *    (float, seconds with a millisecond precision, default: 10, example: 0.01)
+	 * - `useragent`: Useragent to send to the server
+	 *    (string, default: php-requests/$version)
+	 * - `follow_redirects`: Should we follow 3xx redirects?
+	 *    (boolean, default: true)
+	 * - `redirects`: How many times should we redirect before erroring?
+	 *    (integer, default: 10)
+	 * - `blocking`: Should we block processing on this request?
+	 *    (boolean, default: true)
+	 * - `filename`: File to stream the body to instead.
+	 *    (string|boolean, default: false)
+	 * - `auth`: Authentication handler or array of user/password details to use
+	 *    for Basic authentication
+	 *    (Requests_Auth|array|boolean, default: false)
+	 * - `proxy`: Proxy details to use for proxy by-passing and authentication
+	 *    (Requests_Proxy|array|string|boolean, default: false)
+	 * - `max_bytes`: Limit for the response body size.
+	 *    (integer|boolean, default: false)
+	 * - `idn`: Enable IDN parsing
+	 *    (boolean, default: true)
+	 * - `transport`: Custom transport. Either a class name, or a
+	 *    transport object. Defaults to the first working transport from
+	 *    {@see getTransport()}
+	 *    (string|Requests_Transport, default: {@see getTransport()})
+	 * - `hooks`: Hooks handler.
+	 *    (Requests_Hooker, default: new Requests_Hooks())
+	 * - `verify`: Should we verify SSL certificates? Allows passing in a custom
+	 *    certificate file as a string. (Using true uses the system-wide root
+	 *    certificate store instead, but this may have different behaviour
+	 *    across transports.)
+	 *    (string|boolean, default: library/Requests/Transport/cacert.pem)
+	 * - `verifyname`: Should we verify the common name in the SSL certificate?
+	 *    (boolean: default, true)
+	 * - `data_format`: How should we send the `$data` parameter?
+	 *    (string, one of 'query' or 'body', default: 'query' for
+	 *    HEAD/GET/DELETE, 'body' for POST/PUT/OPTIONS/PATCH)
+	 *
+	 * @throws Requests_Exception On invalid URLs (`nonhttp`)
+	 *
+	 * @param string $url URL to request
+	 * @param array $headers Extra headers to send with the request
+	 * @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
+	 * @param string $type HTTP request type (use Requests constants)
+	 * @param array $options Options for the request (see description for more information)
+	 * @return Requests_Response
+	 */
+	public static function request($url, $headers = array(), $data = array(), $type = self::GET, $options = array()) {
+		if (empty($options['type'])) {
+			$options['type'] = $type;
+		}
+		$options = array_merge(self::get_default_options(), $options);
+
+		self::set_defaults($url, $headers, $data, $type, $options);
+
+		$options['hooks']->dispatch('requests.before_request', array(&$url, &$headers, &$data, &$type, &$options));
+
+		if (!empty($options['transport'])) {
+			$transport = $options['transport'];
+
+			if (is_string($options['transport'])) {
+				$transport = new $transport();
+			}
+		}
+		else {
+			$need_ssl = (0 === stripos($url, 'https://'));
+			$capabilities = array('ssl' => $need_ssl);
+			$transport = self::get_transport($capabilities);
+		}
+		$response = $transport->request($url, $headers, $data, $options);
+
+		$options['hooks']->dispatch('requests.before_parse', array(&$response, $url, $headers, $data, $type, $options));
+
+		return self::parse_response($response, $url, $headers, $data, $options);
+	}
+
+	/**
+	 * Send multiple HTTP requests simultaneously
+	 *
+	 * The `$requests` parameter takes an associative or indexed array of
+	 * request fields. The key of each request can be used to match up the
+	 * request with the returned data, or with the request passed into your
+	 * `multiple.request.complete` callback.
+	 *
+	 * The request fields value is an associative array with the following keys:
+	 *
+	 * - `url`: Request URL Same as the `$url` parameter to
+	 *    {@see Requests::request}
+	 *    (string, required)
+	 * - `headers`: Associative array of header fields. Same as the `$headers`
+	 *    parameter to {@see Requests::request}
+	 *    (array, default: `array()`)
+	 * - `data`: Associative array of data fields or a string. Same as the
+	 *    `$data` parameter to {@see Requests::request}
+	 *    (array|string, default: `array()`)
+	 * - `type`: HTTP request type (use Requests constants). Same as the `$type`
+	 *    parameter to {@see Requests::request}
+	 *    (string, default: `Requests::GET`)
+	 * - `cookies`: Associative array of cookie name to value, or cookie jar.
+	 *    (array|Requests_Cookie_Jar)
+	 *
+	 * If the `$options` parameter is specified, individual requests will
+	 * inherit options from it. This can be used to use a single hooking system,
+	 * or set all the types to `Requests::POST`, for example.
+	 *
+	 * In addition, the `$options` parameter takes the following global options:
+	 *
+	 * - `complete`: A callback for when a request is complete. Takes two
+	 *    parameters, a Requests_Response/Requests_Exception reference, and the
+	 *    ID from the request array (Note: this can also be overridden on a
+	 *    per-request basis, although that's a little silly)
+	 *    (callback)
+	 *
+	 * @param array $requests Requests data (see description for more information)
+	 * @param array $options Global and default options (see {@see Requests::request})
+	 * @return array Responses (either Requests_Response or a Requests_Exception object)
+	 */
+	public static function request_multiple($requests, $options = array()) {
+		$options = array_merge(self::get_default_options(true), $options);
+
+		if (!empty($options['hooks'])) {
+			$options['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
+			if (!empty($options['complete'])) {
+				$options['hooks']->register('multiple.request.complete', $options['complete']);
+			}
+		}
+
+		foreach ($requests as $id => &$request) {
+			if (!isset($request['headers'])) {
+				$request['headers'] = array();
+			}
+			if (!isset($request['data'])) {
+				$request['data'] = array();
+			}
+			if (!isset($request['type'])) {
+				$request['type'] = self::GET;
+			}
+			if (!isset($request['options'])) {
+				$request['options'] = $options;
+				$request['options']['type'] = $request['type'];
+			}
+			else {
+				if (empty($request['options']['type'])) {
+					$request['options']['type'] = $request['type'];
+				}
+				$request['options'] = array_merge($options, $request['options']);
+			}
+
+			self::set_defaults($request['url'], $request['headers'], $request['data'], $request['type'], $request['options']);
+
+			// Ensure we only hook in once
+			if ($request['options']['hooks'] !== $options['hooks']) {
+				$request['options']['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
+				if (!empty($request['options']['complete'])) {
+					$request['options']['hooks']->register('multiple.request.complete', $request['options']['complete']);
+				}
+			}
+		}
+		unset($request);
+
+		if (!empty($options['transport'])) {
+			$transport = $options['transport'];
+
+			if (is_string($options['transport'])) {
+				$transport = new $transport();
+			}
+		}
+		else {
+			$transport = self::get_transport();
+		}
+		$responses = $transport->request_multiple($requests, $options);
+
+		foreach ($responses as $id => &$response) {
+			// If our hook got messed with somehow, ensure we end up with the
+			// correct response
+			if (is_string($response)) {
+				$request = $requests[$id];
+				self::parse_multiple($response, $request);
+				$request['options']['hooks']->dispatch('multiple.request.complete', array(&$response, $id));
+			}
+		}
+
+		return $responses;
+	}
+
+	/**
+	 * Get the default options
+	 *
+	 * @see Requests::request() for values returned by this method
+	 * @param boolean $multirequest Is this a multirequest?
+	 * @return array Default option values
+	 */
+	protected static function get_default_options($multirequest = false) {
+		$defaults = array(
+			'timeout' => 10,
+			'connect_timeout' => 10,
+			'useragent' => 'php-requests/' . self::VERSION,
+			'protocol_version' => 1.1,
+			'redirected' => 0,
+			'redirects' => 10,
+			'follow_redirects' => true,
+			'blocking' => true,
+			'type' => self::GET,
+			'filename' => false,
+			'auth' => false,
+			'proxy' => false,
+			'cookies' => false,
+			'max_bytes' => false,
+			'idn' => true,
+			'hooks' => null,
+			'transport' => null,
+			'verify' => Requests::get_certificate_path(),
+			'verifyname' => true,
+		);
+		if ($multirequest !== false) {
+			$defaults['complete'] = null;
+		}
+		return $defaults;
+	}
+
+	/**
+	 * Get default certificate path.
+	 *
+	 * @return string Default certificate path.
+	 */
+	public static function get_certificate_path() {
+		if ( ! empty( Requests::$certificate_path ) ) {
+			return Requests::$certificate_path;
+		}
+
+		return dirname(__FILE__) . '/Requests/Transport/cacert.pem';
+	}
+
+	/**
+	 * Set default certificate path.
+	 *
+	 * @param string $path Certificate path, pointing to a PEM file.
+	 */
+	public static function set_certificate_path( $path ) {
+		Requests::$certificate_path = $path;
+	}
+
+	/**
+	 * Set the default values
+	 *
+	 * @param string $url URL to request
+	 * @param array $headers Extra headers to send with the request
+	 * @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
+	 * @param string $type HTTP request type
+	 * @param array $options Options for the request
+	 * @return array $options
+	 */
+	protected static function set_defaults(&$url, &$headers, &$data, &$type, &$options) {
+		if (!preg_match('/^http(s)?:\/\//i', $url, $matches)) {
+			throw new Requests_Exception('Only HTTP(S) requests are handled.', 'nonhttp', $url);
+		}
+
+		if (empty($options['hooks'])) {
+			$options['hooks'] = new Requests_Hooks();
+		}
+
+		if (is_array($options['auth'])) {
+			$options['auth'] = new Requests_Auth_Basic($options['auth']);
+		}
+		if ($options['auth'] !== false) {
+			$options['auth']->register($options['hooks']);
+		}
+
+		if (is_string($options['proxy']) || is_array($options['proxy'])) {
+			$options['proxy'] = new Requests_Proxy_HTTP($options['proxy']);
+		}
+		if ($options['proxy'] !== false) {
+			$options['proxy']->register($options['hooks']);
+		}
+
+		if (is_array($options['cookies'])) {
+			$options['cookies'] = new Requests_Cookie_Jar($options['cookies']);
+		}
+		elseif (empty($options['cookies'])) {
+			$options['cookies'] = new Requests_Cookie_Jar();
+		}
+		if ($options['cookies'] !== false) {
+			$options['cookies']->register($options['hooks']);
+		}
+
+		if ($options['idn'] !== false) {
+			$iri = new Requests_IRI($url);
+			$iri->host = Requests_IDNAEncoder::encode($iri->ihost);
+			$url = $iri->uri;
+		}
+
+		// Massage the type to ensure we support it.
+		$type = strtoupper($type);
+
+		if (!isset($options['data_format'])) {
+			if (in_array($type, array(self::HEAD, self::GET, self::DELETE))) {
+				$options['data_format'] = 'query';
+			}
+			else {
+				$options['data_format'] = 'body';
+			}
+		}
+	}
+
+	/**
+	 * HTTP response parser
+	 *
+	 * @throws Requests_Exception On missing head/body separator (`requests.no_crlf_separator`)
+	 * @throws Requests_Exception On missing head/body separator (`noversion`)
+	 * @throws Requests_Exception On missing head/body separator (`toomanyredirects`)
+	 *
+	 * @param string $headers Full response text including headers and body
+	 * @param string $url Original request URL
+	 * @param array $req_headers Original $headers array passed to {@link request()}, in case we need to follow redirects
+	 * @param array $req_data Original $data array passed to {@link request()}, in case we need to follow redirects
+	 * @param array $options Original $options array passed to {@link request()}, in case we need to follow redirects
+	 * @return Requests_Response
+	 */
+	protected static function parse_response($headers, $url, $req_headers, $req_data, $options) {
+		$return = new Requests_Response();
+		if (!$options['blocking']) {
+			return $return;
+		}
+
+		$return->raw = $headers;
+		$return->url = $url;
+
+		if (!$options['filename']) {
+			if (($pos = strpos($headers, "\r\n\r\n")) === false) {
+				// Crap!
+				throw new Requests_Exception('Missing header/body separator', 'requests.no_crlf_separator');
+			}
+
+			$headers = substr($return->raw, 0, $pos);
+			$return->body = substr($return->raw, $pos + strlen("\n\r\n\r"));
+		}
+		else {
+			$return->body = '';
+		}
+		// Pretend CRLF = LF for compatibility (RFC 2616, section 19.3)
+		$headers = str_replace("\r\n", "\n", $headers);
+		// Unfold headers (replace [CRLF] 1*( SP | HT ) with SP) as per RFC 2616 (section 2.2)
+		$headers = preg_replace('/\n[ \t]/', ' ', $headers);
+		$headers = explode("\n", $headers);
+		preg_match('#^HTTP/(1\.\d)[ \t]+(\d+)#i', array_shift($headers), $matches);
+		if (empty($matches)) {
+			throw new Requests_Exception('Response could not be parsed', 'noversion', $headers);
+		}
+		$return->protocol_version = (float) $matches[1];
+		$return->status_code = (int) $matches[2];
+		if ($return->status_code >= 200 && $return->status_code < 300) {
+			$return->success = true;
+		}
+
+		foreach ($headers as $header) {
+			list($key, $value) = explode(':', $header, 2);
+			$value = trim($value);
+			preg_replace('#(\s+)#i', ' ', $value);
+			$return->headers[$key] = $value;
+		}
+		if (isset($return->headers['transfer-encoding'])) {
+			$return->body = self::decode_chunked($return->body);
+			unset($return->headers['transfer-encoding']);
+		}
+		if (isset($return->headers['content-encoding'])) {
+			$return->body = self::decompress($return->body);
+		}
+
+		//fsockopen and cURL compatibility
+		if (isset($return->headers['connection'])) {
+			unset($return->headers['connection']);
+		}
+
+		$options['hooks']->dispatch('requests.before_redirect_check', array(&$return, $req_headers, $req_data, $options));
+
+		if ($return->is_redirect() && $options['follow_redirects'] === true) {
+			if (isset($return->headers['location']) && $options['redirected'] < $options['redirects']) {
+				if ($return->status_code === 303) {
+					$options['type'] = self::GET;
+				}
+				$options['redirected']++;
+				$location = $return->headers['location'];
+				if (strpos($location, 'http://') !== 0 && strpos($location, 'https://') !== 0) {
+					// relative redirect, for compatibility make it absolute
+					$location = Requests_IRI::absolutize($url, $location);
+					$location = $location->uri;
+				}
+
+				$hook_args = array(
+					&$location,
+					&$req_headers,
+					&$req_data,
+					&$options,
+					$return
+				);
+				$options['hooks']->dispatch('requests.before_redirect', $hook_args);
+				$redirected = self::request($location, $req_headers, $req_data, $options['type'], $options);
+				$redirected->history[] = $return;
+				return $redirected;
+			}
+			elseif ($options['redirected'] >= $options['redirects']) {
+				throw new Requests_Exception('Too many redirects', 'toomanyredirects', $return);
+			}
+		}
+
+		$return->redirects = $options['redirected'];
+
+		$options['hooks']->dispatch('requests.after_request', array(&$return, $req_headers, $req_data, $options));
+		return $return;
+	}
+
+	/**
+	 * Callback for `transport.internal.parse_response`
+	 *
+	 * Internal use only. Converts a raw HTTP response to a Requests_Response
+	 * while still executing a multiple request.
+	 *
+	 * @param string $response Full response text including headers and body (will be overwritten with Response instance)
+	 * @param array $request Request data as passed into {@see Requests::request_multiple()}
+	 * @return null `$response` is either set to a Requests_Response instance, or a Requests_Exception object
+	 */
+	public static function parse_multiple(&$response, $request) {
+		try {
+			$url = $request['url'];
+			$headers = $request['headers'];
+			$data = $request['data'];
+			$options = $request['options'];
+			$response = self::parse_response($response, $url, $headers, $data, $options);
+		}
+		catch (Requests_Exception $e) {
+			$response = $e;
+		}
+	}
+
+	/**
+	 * Decoded a chunked body as per RFC 2616
+	 *
+	 * @see https://tools.ietf.org/html/rfc2616#section-3.6.1
+	 * @param string $data Chunked body
+	 * @return string Decoded body
+	 */
+	protected static function decode_chunked($data) {
+		if (!preg_match('/^([0-9a-f]+)(?:;(?:[\w-]*)(?:=(?:(?:[\w-]*)*|"(?:[^\r\n])*"))?)*\r\n/i', trim($data))) {
+			return $data;
+		}
+
+
+
+		$decoded = '';
+		$encoded = $data;
+
+		while (true) {
+			$is_chunked = (bool) preg_match('/^([0-9a-f]+)(?:;(?:[\w-]*)(?:=(?:(?:[\w-]*)*|"(?:[^\r\n])*"))?)*\r\n/i', $encoded, $matches);
+			if (!$is_chunked) {
+				// Looks like it's not chunked after all
+				return $data;
+			}
+
+			$length = hexdec(trim($matches[1]));
+			if ($length === 0) {
+				// Ignore trailer headers
+				return $decoded;
+			}
+
+			$chunk_length = strlen($matches[0]);
+			$decoded .= substr($encoded, $chunk_length, $length);
+			$encoded = substr($encoded, $chunk_length + $length + 2);
+
+			if (trim($encoded) === '0' || empty($encoded)) {
+				return $decoded;
+			}
+		}
+
+		// We'll never actually get down here
+		// @codeCoverageIgnoreStart
+	}
+	// @codeCoverageIgnoreEnd
+
+	/**
+	 * Convert a key => value array to a 'key: value' array for headers
+	 *
+	 * @param array $array Dictionary of header values
+	 * @return array List of headers
+	 */
+	public static function flatten($array) {
+		$return = array();
+		foreach ($array as $key => $value) {
+			$return[] = sprintf('%s: %s', $key, $value);
+		}
+		return $return;
+	}
+
+	/**
+	 * Convert a key => value array to a 'key: value' array for headers
+	 *
+	 * @codeCoverageIgnore
+	 * @deprecated Misspelling of {@see Requests::flatten}
+	 * @param array $array Dictionary of header values
+	 * @return array List of headers
+	 */
+	public static function flattern($array) {
+		return self::flatten($array);
+	}
+
+	/**
+	 * Decompress an encoded body
+	 *
+	 * Implements gzip, compress and deflate. Guesses which it is by attempting
+	 * to decode.
+	 *
+	 * @param string $data Compressed data in one of the above formats
+	 * @return string Decompressed string
+	 */
+	public static function decompress($data) {
+		if (substr($data, 0, 2) !== "\x1f\x8b" && substr($data, 0, 2) !== "\x78\x9c") {
+			// Not actually compressed. Probably cURL ruining this for us.
+			return $data;
+		}
+
+		if (function_exists('gzdecode') && ($decoded = @gzdecode($data)) !== false) {
+			return $decoded;
+		}
+		elseif (function_exists('gzinflate') && ($decoded = @gzinflate($data)) !== false) {
+			return $decoded;
+		}
+		elseif (($decoded = self::compatible_gzinflate($data)) !== false) {
+			return $decoded;
+		}
+		elseif (function_exists('gzuncompress') && ($decoded = @gzuncompress($data)) !== false) {
+			return $decoded;
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Decompression of deflated string while staying compatible with the majority of servers.
+	 *
+	 * Certain Servers will return deflated data with headers which PHP's gzinflate()
+	 * function cannot handle out of the box. The following function has been created from
+	 * various snippets on the gzinflate() PHP documentation.
+	 *
+	 * Warning: Magic numbers within. Due to the potential different formats that the compressed
+	 * data may be returned in, some "magic offsets" are needed to ensure proper decompression
+	 * takes place. For a simple progmatic way to determine the magic offset in use, see:
+	 * https://core.trac.wordpress.org/ticket/18273
+	 *
+	 * @since 2.8.1
+	 * @link https://core.trac.wordpress.org/ticket/18273
+	 * @link https://secure.php.net/manual/en/function.gzinflate.php#70875
+	 * @link https://secure.php.net/manual/en/function.gzinflate.php#77336
+	 *
+	 * @param string $gzData String to decompress.
+	 * @return string|bool False on failure.
+	 */
+	public static function compatible_gzinflate($gzData) {
+		// Compressed data might contain a full zlib header, if so strip it for
+		// gzinflate()
+		if (substr($gzData, 0, 3) == "\x1f\x8b\x08") {
+			$i = 10;
+			$flg = ord(substr($gzData, 3, 1));
+			if ($flg > 0) {
+				if ($flg & 4) {
+					list($xlen) = unpack('v', substr($gzData, $i, 2));
+					$i = $i + 2 + $xlen;
+				}
+				if ($flg & 8) {
+					$i = strpos($gzData, "\0", $i) + 1;
+				}
+				if ($flg & 16) {
+					$i = strpos($gzData, "\0", $i) + 1;
+				}
+				if ($flg & 2) {
+					$i = $i + 2;
+				}
+			}
+			$decompressed = self::compatible_gzinflate(substr($gzData, $i));
+			if (false !== $decompressed) {
+				return $decompressed;
+			}
+		}
+
+		// If the data is Huffman Encoded, we must first strip the leading 2
+		// byte Huffman marker for gzinflate()
+		// The response is Huffman coded by many compressors such as
+		// java.util.zip.Deflater, Ruby’s Zlib::Deflate, and .NET's
+		// System.IO.Compression.DeflateStream.
+		//
+		// See https://decompres.blogspot.com/ for a quick explanation of this
+		// data type
+		$huffman_encoded = false;
+
+		// low nibble of first byte should be 0x08
+		list(, $first_nibble)    = unpack('h', $gzData);
+
+		// First 2 bytes should be divisible by 0x1F
+		list(, $first_two_bytes) = unpack('n', $gzData);
+
+		if (0x08 == $first_nibble && 0 == ($first_two_bytes % 0x1F)) {
+			$huffman_encoded = true;
+		}
+
+		if ($huffman_encoded) {
+			if (false !== ($decompressed = @gzinflate(substr($gzData, 2)))) {
+				return $decompressed;
+			}
+		}
+
+		if ("\x50\x4b\x03\x04" == substr($gzData, 0, 4)) {
+			// ZIP file format header
+			// Offset 6: 2 bytes, General-purpose field
+			// Offset 26: 2 bytes, filename length
+			// Offset 28: 2 bytes, optional field length
+			// Offset 30: Filename field, followed by optional field, followed
+			// immediately by data
+			list(, $general_purpose_flag) = unpack('v', substr($gzData, 6, 2));
+
+			// If the file has been compressed on the fly, 0x08 bit is set of
+			// the general purpose field. We can use this to differentiate
+			// between a compressed document, and a ZIP file
+			$zip_compressed_on_the_fly = (0x08 == (0x08 & $general_purpose_flag));
+
+			if (!$zip_compressed_on_the_fly) {
+				// Don't attempt to decode a compressed zip file
+				return $gzData;
+			}
+
+			// Determine the first byte of data, based on the above ZIP header
+			// offsets:
+			$first_file_start = array_sum(unpack('v2', substr($gzData, 26, 4)));
+			if (false !== ($decompressed = @gzinflate(substr($gzData, 30 + $first_file_start)))) {
+				return $decompressed;
+			}
+			return false;
+		}
+
+		// Finally fall back to straight gzinflate
+		if (false !== ($decompressed = @gzinflate($gzData))) {
+			return $decompressed;
+		}
+
+		// Fallback for all above failing, not expected, but included for
+		// debugging and preventing regressions and to track stats
+		if (false !== ($decompressed = @gzinflate(substr($gzData, 2)))) {
+			return $decompressed;
+		}
+
+		return false;
+	}
+
+	public static function match_domain($host, $reference) {
+		// Check for a direct match
+		if ($host === $reference) {
+			return true;
+		}
+
+		// Calculate the valid wildcard match if the host is not an IP address
+		// Also validates that the host has 3 parts or more, as per Firefox's
+		// ruleset.
+		$parts = explode('.', $host);
+		if (ip2long($host) === false && count($parts) >= 3) {
+			$parts[0] = '*';
+			$wildcard = implode('.', $parts);
+			if ($wildcard === $reference) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+}