1 <?php

     2 /**

     3  * Simple and uniform HTTP request API.

     4  *

     5  * Standardizes the HTTP requests for WordPress. Handles cookies, gzip encoding and decoding, chunk

     6  * decoding, if HTTP 1.1 and various other difficult HTTP protocol implementations.

     7  *

     8  * @link http://trac.wordpress.org/ticket/4779 HTTP API Proposal

     9  *

    10  * @package WordPress

    11  * @subpackage HTTP

    12  * @since 2.7.0

    13  */

    14 

    15 /**

    16  * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.

    17  *

    18  * This class is called for the functionality of making HTTP requests and replaces Snoopy

    19  * functionality. There is no available functionality to add HTTP transport implementations, since

    20  * most of the HTTP transports are added and available for use.

    21  *

    22  * There are no properties, because none are needed and for performance reasons. Some of the

    23  * functions are static and while they do have some overhead over functions in PHP4, the purpose is

    24  * maintainability. When PHP5 is finally the requirement, it will be easy to add the static keyword

    25  * to the code. It is not as easy to convert a function to a method after enough code uses the old

    26  * way.

    27  *

    28  * Debugging includes several actions, which pass different variables for debugging the HTTP API.

    29  *

    30  * @package WordPress

    31  * @subpackage HTTP

    32  * @since 2.7.0

    33  */

    34 class WP_Http {

    35 

    36 	/**

    37 	 * Send a HTTP request to a URI.

    38 	 *

    39 	 * The body and headers are part of the arguments. The 'body' argument is for the body and will

    40 	 * accept either a string or an array. The 'headers' argument should be an array, but a string

    41 	 * is acceptable. If the 'body' argument is an array, then it will automatically be escaped

    42 	 * using http_build_query().

    43 	 *

    44 	 * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS

    45 	 * protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send

    46 	 * headers. Other protocols are unsupported and most likely will fail.

    47 	 *

    48 	 * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and

    49 	 * 'user-agent'.

    50 	 *

    51 	 * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow

    52 	 * others, but should not be assumed. The 'timeout' is used to sent how long the connection

    53 	 * should stay open before failing when no response. 'redirection' is used to track how many

    54 	 * redirects were taken and used to sent the amount for other transports, but not all transports

    55 	 * accept setting that value.

    56 	 *

    57 	 * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and

    58 	 * '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The

    59 	 * 'user-agent' option is the user-agent and is used to replace the default user-agent, which is

    60 	 * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.

    61 	 *

    62 	 * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP

    63 	 * while it performs the request or continue regardless. Actually, that isn't entirely correct.

    64 	 * Blocking mode really just means whether the fread should just pull what it can whenever it

    65 	 * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading

    66 	 * the entire content. It doesn't actually always mean that PHP will continue going after making

    67 	 * the request.

    68 	 *

    69 	 * @access public

    70 	 * @since 2.7.0

    71 	 * @todo Refactor this code. The code in this method extends the scope of its original purpose

    72 	 *		and should be refactored to allow for cleaner abstraction and reduce duplication of the

    73 	 *		code. One suggestion is to create a class specifically for the arguments, however

    74 	 *		preliminary refactoring to this affect has affect more than just the scope of the

    75 	 *		arguments. Something to ponder at least.

    76 	 *

    77 	 * @param string $url URI resource.

    78 	 * @param str|array $args Optional. Override the defaults.

    79 	 * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error

    80 	 */

    81 	function request( $url, $args = array() ) {

    82 		global $wp_version;

    83 

    84 		$defaults = array(

    85 			'method' => 'GET',

    86 			'timeout' => apply_filters( 'http_request_timeout', 5),

    87 			'redirection' => apply_filters( 'http_request_redirection_count', 5),

    88 			'httpversion' => apply_filters( 'http_request_version', '1.0'),

    89 			'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )  ),

    90 			'blocking' => true,

    91 			'headers' => array(),

    92 			'cookies' => array(),

    93 			'body' => null,

    94 			'compress' => false,

    95 			'decompress' => true,

    96 			'sslverify' => true,

    97 			'stream' => false,

    98 			'filename' => null

    99 		);

   100 

   101 		// Pre-parse for the HEAD checks.

   102 		$args = wp_parse_args( $args );

   103 

   104 		// By default, Head requests do not cause redirections.

   105 		if ( isset($args['method']) && 'HEAD' == $args['method'] )

   106 			$defaults['redirection'] = 0;

   107 

   108 		$r = wp_parse_args( $args, $defaults );

   109 		$r = apply_filters( 'http_request_args', $r, $url );

   110 

   111 		// Certain classes decrement this, store a copy of the original value for loop purposes.

   112 		$r['_redirection'] = $r['redirection'];

   113 

   114 		// Allow plugins to short-circuit the request

   115 		$pre = apply_filters( 'pre_http_request', false, $r, $url );

   116 		if ( false !== $pre )

   117 			return $pre;

   118 

   119 		$arrURL = parse_url( $url );

   120 

   121 		if ( empty( $url ) || empty( $arrURL['scheme'] ) )

   122 			return new WP_Error('http_request_failed', __('A valid URL was not provided.'));

   123 

   124 		if ( $this->block_request( $url ) )

   125 			return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) );

   126 

   127 		// Determine if this is a https call and pass that on to the transport functions

   128 		// so that we can blacklist the transports that do not support ssl verification

   129 		$r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';

   130 

   131 		// Determine if this request is to OUR install of WordPress

   132 		$homeURL = parse_url( get_bloginfo( 'url' ) );

   133 		$r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host'];

   134 		unset( $homeURL );

   135 

   136 		// If we are streaming to a file but no filename was given drop it in the WP temp dir

   137 		// and pick it's name using the basename of the $url

   138 		if ( $r['stream']  && empty( $r['filename'] ) )

   139 			$r['filename'] = get_temp_dir() . basename( $url );

   140 

   141 		// Force some settings if we are streaming to a file and check for existence and perms of destination directory

   142 		if ( $r['stream'] ) {

   143 			$r['blocking'] = true;

   144 			if ( ! is_writable( dirname( $r['filename'] ) ) )

   145 				return new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );

   146 		}

   147 

   148 		if ( is_null( $r['headers'] ) )

   149 			$r['headers'] = array();

   150 

   151 		if ( ! is_array( $r['headers'] ) ) {

   152 			$processedHeaders = WP_Http::processHeaders( $r['headers'] );

   153 			$r['headers'] = $processedHeaders['headers'];

   154 		}

   155 

   156 		if ( isset( $r['headers']['User-Agent'] ) ) {

   157 			$r['user-agent'] = $r['headers']['User-Agent'];

   158 			unset( $r['headers']['User-Agent'] );

   159 		}

   160 

   161 		if ( isset( $r['headers']['user-agent'] ) ) {

   162 			$r['user-agent'] = $r['headers']['user-agent'];

   163 			unset( $r['headers']['user-agent'] );

   164 		}

   165 

   166 		// Construct Cookie: header if any cookies are set

   167 		WP_Http::buildCookieHeader( $r );

   168 

   169 		if ( WP_Http_Encoding::is_available() )

   170 			$r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();

   171 

   172 		if ( empty($r['body']) ) {

   173 			$r['body'] = null;

   174 			// Some servers fail when sending content without the content-length header being set.

   175 			// Also, to fix another bug, we only send when doing POST and PUT and the content-length

   176 			// header isn't already set.

   177 			if ( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset( $r['headers']['Content-Length'] ) )

   178 				$r['headers']['Content-Length'] = 0;

   179 		} else {

   180 			if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {

   181 				$r['body'] = http_build_query( $r['body'], null, '&' );

   182 				if ( ! isset( $r['headers']['Content-Type'] ) )

   183 					$r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' );

   184 				$r['headers']['Content-Length'] = strlen( $r['body'] );

   185 			}

   186 

   187 			if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )

   188 				$r['headers']['Content-Length'] = strlen( $r['body'] );

   189 		}

   190 

   191 		return $this->_dispatch_request($url, $r);

   192 	}

   193 

   194 	/**

   195 	 * Tests which transports are capable of supporting the request.

   196 	 *

   197 	 * @since 3.2.0

   198 	 * @access private

   199 	 *

   200 	 * @param array $args Request arguments

   201 	 * @param string $url URL to Request

   202 	 *

   203 	 * @return string|false Class name for the first transport that claims to support the request. False if no transport claims to support the request.

   204 	 */

   205 	public function _get_first_available_transport( $args, $url = null ) {

   206 		$request_order = array( 'curl', 'streams', 'fsockopen' );

   207 

   208 		// Loop over each transport on each HTTP request looking for one which will serve this request's needs

   209 		foreach ( $request_order as $transport ) {

   210 			$class = 'WP_HTTP_' . $transport;

   211 

   212 			// Check to see if this transport is a possibility, calls the transport statically

   213 			if ( !call_user_func( array( $class, 'test' ), $args, $url ) )

   214 				continue;

   215 

   216 			return $class;

   217 		}

   218 

   219 		return false;

   220 	}

   221 

   222 	/**

   223 	 * Dispatches a HTTP request to a supporting transport.

   224 	 *

   225 	 * Tests each transport in order to find a transport which matches the request arguments.

   226 	 * Also caches the transport instance to be used later.

   227 	 *

   228 	 * The order for blocking requests is cURL, Streams, and finally Fsockopen.

   229 	 * The order for non-blocking requests is cURL, Streams and Fsockopen().

   230 	 *

   231 	 * There are currently issues with "localhost" not resolving correctly with DNS. This may cause

   232 	 * an error "failed to open stream: A connection attempt failed because the connected party did

   233 	 * not properly respond after a period of time, or established connection failed because [the]

   234 	 * connected host has failed to respond."

   235 	 *

   236 	 * @since 3.2.0

   237 	 * @access private

   238 	 *

   239 	 * @param string $url URL to Request

   240 	 * @param array $args Request arguments

   241 	 * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error

   242 	 */

   243 	private function _dispatch_request( $url, $args ) {

   244 		static $transports = array();

   245 

   246 		$class = $this->_get_first_available_transport( $args, $url );

   247 		if ( !$class )

   248 			return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) );

   249 

   250 		// Transport claims to support request, instantiate it and give it a whirl.

   251 		if ( empty( $transports[$class] ) )

   252 			$transports[$class] = new $class;

   253 

   254 		$response = $transports[$class]->request( $url, $args );

   255 

   256 		do_action( 'http_api_debug', $response, 'response', $class, $args, $url );

   257 

   258 		if ( is_wp_error( $response ) )

   259 			return $response;

   260 

   261 		return apply_filters( 'http_response', $response, $args, $url );

   262 	}

   263 

   264 	/**

   265 	 * Uses the POST HTTP method.

   266 	 *

   267 	 * Used for sending data that is expected to be in the body.

   268 	 *

   269 	 * @access public

   270 	 * @since 2.7.0

   271 	 *

   272 	 * @param string $url URI resource.

   273 	 * @param str|array $args Optional. Override the defaults.

   274 	 * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error

   275 	 */

   276 	function post($url, $args = array()) {

   277 		$defaults = array('method' => 'POST');

   278 		$r = wp_parse_args( $args, $defaults );

   279 		return $this->request($url, $r);

   280 	}

   281 

   282 	/**

   283 	 * Uses the GET HTTP method.

   284 	 *

   285 	 * Used for sending data that is expected to be in the body.

   286 	 *

   287 	 * @access public

   288 	 * @since 2.7.0

   289 	 *

   290 	 * @param string $url URI resource.

   291 	 * @param str|array $args Optional. Override the defaults.

   292 	 * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error

   293 	 */

   294 	function get($url, $args = array()) {

   295 		$defaults = array('method' => 'GET');

   296 		$r = wp_parse_args( $args, $defaults );

   297 		return $this->request($url, $r);

   298 	}

   299 

   300 	/**

   301 	 * Uses the HEAD HTTP method.

   302 	 *

   303 	 * Used for sending data that is expected to be in the body.

   304 	 *

   305 	 * @access public

   306 	 * @since 2.7.0

   307 	 *

   308 	 * @param string $url URI resource.

   309 	 * @param str|array $args Optional. Override the defaults.

   310 	 * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error

   311 	 */

   312 	function head($url, $args = array()) {

   313 		$defaults = array('method' => 'HEAD');

   314 		$r = wp_parse_args( $args, $defaults );

   315 		return $this->request($url, $r);

   316 	}

   317 

   318 	/**

   319 	 * Parses the responses and splits the parts into headers and body.

   320 	 *

   321 	 * @access public

   322 	 * @static

   323 	 * @since 2.7.0

   324 	 *

   325 	 * @param string $strResponse The full response string

   326 	 * @return array Array with 'headers' and 'body' keys.

   327 	 */

   328 	function processResponse($strResponse) {

   329 		$res = explode("\r\n\r\n", $strResponse, 2);

   330 

   331 		return array('headers' => $res[0], 'body' => isset($res[1]) ? $res[1] : '');

   332 	}

   333 

   334 	/**

   335 	 * Transform header string into an array.

   336 	 *

   337 	 * If an array is given then it is assumed to be raw header data with numeric keys with the

   338 	 * headers as the values. No headers must be passed that were already processed.

   339 	 *

   340 	 * @access public

   341 	 * @static

   342 	 * @since 2.7.0

   343 	 *

   344 	 * @param string|array $headers

   345 	 * @return array Processed string headers. If duplicate headers are encountered,

   346 	 * 					Then a numbered array is returned as the value of that header-key.

   347 	 */

   348 	public static function processHeaders($headers) {

   349 		// split headers, one per array element

   350 		if ( is_string($headers) ) {

   351 			// tolerate line terminator: CRLF = LF (RFC 2616 19.3)

   352 			$headers = str_replace("\r\n", "\n", $headers);

   353 			// unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) <US-ASCII SP, space (32)>, <US-ASCII HT, horizontal-tab (9)> (RFC 2616 2.2)

   354 			$headers = preg_replace('/\n[ \t]/', ' ', $headers);

   355 			// create the headers array

   356 			$headers = explode("\n", $headers);

   357 		}

   358 

   359 		$response = array('code' => 0, 'message' => '');

   360 

   361 		// If a redirection has taken place, The headers for each page request may have been passed.

   362 		// In this case, determine the final HTTP header and parse from there.

   363 		for ( $i = count($headers)-1; $i >= 0; $i-- ) {

   364 			if ( !empty($headers[$i]) && false === strpos($headers[$i], ':') ) {

   365 				$headers = array_splice($headers, $i);

   366 				break;

   367 			}

   368 		}

   369 

   370 		$cookies = array();

   371 		$newheaders = array();

   372 		foreach ( (array) $headers as $tempheader ) {

   373 			if ( empty($tempheader) )

   374 				continue;

   375 

   376 			if ( false === strpos($tempheader, ':') ) {

   377 				$stack = explode(' ', $tempheader, 3);

   378 				$stack[] = '';

   379 				list( , $response['code'], $response['message']) = $stack;

   380 				continue;

   381 			}

   382 

   383 			list($key, $value) = explode(':', $tempheader, 2);

   384 

   385 			if ( !empty( $value ) ) {

   386 				$key = strtolower( $key );

   387 				if ( isset( $newheaders[$key] ) ) {

   388 					if ( !is_array($newheaders[$key]) )

   389 						$newheaders[$key] = array($newheaders[$key]);

   390 					$newheaders[$key][] = trim( $value );

   391 				} else {

   392 					$newheaders[$key] = trim( $value );

   393 				}

   394 				if ( 'set-cookie' == $key )

   395 					$cookies[] = new WP_Http_Cookie( $value );

   396 			}

   397 		}

   398 

   399 		return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);

   400 	}

   401 

   402 	/**

   403 	 * Takes the arguments for a ::request() and checks for the cookie array.

   404 	 *

   405 	 * If it's found, then it's assumed to contain WP_Http_Cookie objects, which are each parsed

   406 	 * into strings and added to the Cookie: header (within the arguments array). Edits the array by

   407 	 * reference.

   408 	 *

   409 	 * @access public

   410 	 * @version 2.8.0

   411 	 * @static

   412 	 *

   413 	 * @param array $r Full array of args passed into ::request()

   414 	 */

   415 	public static function buildCookieHeader( &$r ) {

   416 		if ( ! empty($r['cookies']) ) {

   417 			$cookies_header = '';

   418 			foreach ( (array) $r['cookies'] as $cookie ) {

   419 				$cookies_header .= $cookie->getHeaderValue() . '; ';

   420 			}

   421 			$cookies_header = substr( $cookies_header, 0, -2 );

   422 			$r['headers']['cookie'] = $cookies_header;

   423 		}

   424 	}

   425 

   426 	/**

   427 	 * Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.

   428 	 *

   429 	 * Based off the HTTP http_encoding_dechunk function. Does not support UTF-8. Does not support

   430 	 * returning footer headers. Shouldn't be too difficult to support it though.

   431 	 *

   432 	 * @todo Add support for footer chunked headers.

   433 	 * @access public

   434 	 * @since 2.7.0

   435 	 * @static

   436 	 *

   437 	 * @param string $body Body content

   438 	 * @return string Chunked decoded body on success or raw body on failure.

   439 	 */

   440 	function chunkTransferDecode($body) {

   441 		$body = str_replace(array("\r\n", "\r"), "\n", $body);

   442 		// The body is not chunked encoding or is malformed.

   443 		if ( ! preg_match( '/^[0-9a-f]+(\s|\n)+/mi', trim($body) ) )

   444 			return $body;

   445 

   446 		$parsedBody = '';

   447 		//$parsedHeaders = array(); Unsupported

   448 

   449 		while ( true ) {

   450 			$hasChunk = (bool) preg_match( '/^([0-9a-f]+)(\s|\n)+/mi', $body, $match );

   451 

   452 			if ( $hasChunk ) {

   453 				if ( empty( $match[1] ) )

   454 					return $body;

   455 

   456 				$length = hexdec( $match[1] );

   457 				$chunkLength = strlen( $match[0] );

   458 

   459 				$strBody = substr($body, $chunkLength, $length);

   460 				$parsedBody .= $strBody;

   461 

   462 				$body = ltrim(str_replace(array($match[0], $strBody), '', $body), "\n");

   463 

   464 				if ( "0" == trim($body) )

   465 					return $parsedBody; // Ignore footer headers.

   466 			} else {

   467 				return $body;

   468 			}

   469 		}

   470 	}

   471 

   472 	/**

   473 	 * Block requests through the proxy.

   474 	 *

   475 	 * Those who are behind a proxy and want to prevent access to certain hosts may do so. This will

   476 	 * prevent plugins from working and core functionality, if you don't include api.wordpress.org.

   477 	 *

   478 	 * You block external URL requests by defining WP_HTTP_BLOCK_EXTERNAL as true in your wp-config.php

   479 	 * file and this will only allow localhost and your blog to make requests. The constant

   480 	 * WP_ACCESSIBLE_HOSTS will allow additional hosts to go through for requests. The format of the

   481 	 * WP_ACCESSIBLE_HOSTS constant is a comma separated list of hostnames to allow, wildcard domains

   482 	 * are supported, eg *.wordpress.org will allow for all subdomains of wordpress.org to be contacted.

   483 	 *

   484 	 * @since 2.8.0

   485 	 * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.

   486 	 * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS

   487 	 *

   488 	 * @param string $uri URI of url.

   489 	 * @return bool True to block, false to allow.

   490 	 */

   491 	function block_request($uri) {

   492 		// We don't need to block requests, because nothing is blocked.

   493 		if ( ! defined( 'WP_HTTP_BLOCK_EXTERNAL' ) || ! WP_HTTP_BLOCK_EXTERNAL )

   494 			return false;

   495 

   496 		// parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.

   497 		// This will be displayed on blogs, which is not reasonable.

   498 		$check = @parse_url($uri);

   499 

   500 		/* Malformed URL, can not process, but this could mean ssl, so let through anyway.

   501 		 *

   502 		 * This isn't very security sound. There are instances where a hacker might attempt

   503 		 * to bypass the proxy and this check. However, the reason for this behavior is that

   504 		 * WordPress does not do any checking currently for non-proxy requests, so it is keeps with

   505 		 * the default unsecure nature of the HTTP request.

   506 		 */

   507 		if ( $check === false )

   508 			return false;

   509 

   510 		$home = parse_url( get_option('siteurl') );

   511 

   512 		// Don't block requests back to ourselves by default

   513 		if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )

   514 			return apply_filters('block_local_requests', false);

   515 

   516 		if ( !defined('WP_ACCESSIBLE_HOSTS') )

   517 			return true;

   518 

   519 		static $accessible_hosts;

   520 		static $wildcard_regex = false;

   521 		if ( null == $accessible_hosts ) {

   522 			$accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS);

   523 

   524 			if ( false !== strpos(WP_ACCESSIBLE_HOSTS, '*') ) {

   525 				$wildcard_regex = array();

   526 				foreach ( $accessible_hosts as $host )

   527 					$wildcard_regex[] = str_replace('\*', '[\w.]+?', preg_quote($host, '/'));

   528 				$wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i';

   529 			}

   530 		}

   531 

   532 		if ( !empty($wildcard_regex) )

   533 			return !preg_match($wildcard_regex, $check['host']);

   534 		else

   535 			return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If its in the array, then we can't access it.

   536 

   537 	}

   538 

   539 	static function make_absolute_url( $maybe_relative_path, $url ) {

   540 		if ( empty( $url ) )

   541 			return $maybe_relative_path;

   542 

   543 		// Check for a scheme

   544 		if ( false !== strpos( $maybe_relative_path, '://' ) )

   545 			return $maybe_relative_path;

   546 

   547 		if ( ! $url_parts = @parse_url( $url ) )

   548 			return $maybe_relative_path;

   549 

   550 		if ( ! $relative_url_parts = @parse_url( $maybe_relative_path ) )

   551 			return $maybe_relative_path;

   552 

   553 		$absolute_path = $url_parts['scheme'] . '://' . $url_parts['host'];

   554 		if ( isset( $url_parts['port'] ) )

   555 			$absolute_path .= ':' . $url_parts['port'];

   556 

   557 		// Start off with the Absolute URL path

   558 		$path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/';

   559 

   560 		// If the it's a root-relative path, then great

   561 		if ( ! empty( $relative_url_parts['path'] ) && '/' == $relative_url_parts['path'][0] ) {

   562 			$path = $relative_url_parts['path'];

   563 

   564 		// Else it's a relative path

   565 		} elseif ( ! empty( $relative_url_parts['path'] ) ) {

   566 			// Strip off any file components from the absolute path

   567 			$path = substr( $path, 0, strrpos( $path, '/' ) + 1 );

   568 

   569 			// Build the new path

   570 			$path .= $relative_url_parts['path'];

   571 

   572 			// Strip all /path/../ out of the path

   573 			while ( strpos( $path, '../' ) > 1 ) {

   574 				$path = preg_replace( '![^/]+/\.\./!', '', $path );

   575 			}

   576 

   577 			// Strip any final leading ../ from the path

   578 			$path = preg_replace( '!^/(\.\./)+!', '', $path );

   579 		}

   580 

   581 		// Add the Query string

   582 		if ( ! empty( $relative_url_parts['query'] ) )

   583 			$path .= '?' . $relative_url_parts['query'];

   584 

   585 		return $absolute_path . '/' . ltrim( $path, '/' );

   586 	}

   587 }

   588 

   589 /**

   590  * HTTP request method uses fsockopen function to retrieve the url.

   591  *

   592  * This would be the preferred method, but the fsockopen implementation has the most overhead of all

   593  * the HTTP transport implementations.

   594  *

   595  * @package WordPress

   596  * @subpackage HTTP

   597  * @since 2.7.0

   598  */

   599 class WP_Http_Fsockopen {

   600 	/**

   601 	 * Send a HTTP request to a URI using fsockopen().

   602 	 *

   603 	 * Does not support non-blocking mode.

   604 	 *

   605 	 * @see WP_Http::request For default options descriptions.

   606 	 *

   607 	 * @since 2.7

   608 	 * @access public

   609 	 * @param string $url URI resource.

   610 	 * @param str|array $args Optional. Override the defaults.

   611 	 * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.

   612 	 */

   613 	function request($url, $args = array()) {

   614 		$defaults = array(

   615 			'method' => 'GET', 'timeout' => 5,

   616 			'redirection' => 5, 'httpversion' => '1.0',

   617 			'blocking' => true,

   618 			'headers' => array(), 'body' => null, 'cookies' => array()

   619 		);

   620 

   621 		$r = wp_parse_args( $args, $defaults );

   622 

   623 		if ( isset($r['headers']['User-Agent']) ) {

   624 			$r['user-agent'] = $r['headers']['User-Agent'];

   625 			unset($r['headers']['User-Agent']);

   626 		} else if ( isset($r['headers']['user-agent']) ) {

   627 			$r['user-agent'] = $r['headers']['user-agent'];

   628 			unset($r['headers']['user-agent']);

   629 		}

   630 

   631 		// Construct Cookie: header if any cookies are set

   632 		WP_Http::buildCookieHeader( $r );

   633 

   634 		$iError = null; // Store error number

   635 		$strError = null; // Store error string

   636 

   637 		$arrURL = parse_url($url);

   638 

   639 		$fsockopen_host = $arrURL['host'];

   640 

   641 		$secure_transport = false;

   642 

   643 		if ( ! isset( $arrURL['port'] ) ) {

   644 			if ( ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) && extension_loaded('openssl') ) {

   645 				$fsockopen_host = "ssl://$fsockopen_host";

   646 				$arrURL['port'] = 443;

   647 				$secure_transport = true;

   648 			} else {

   649 				$arrURL['port'] = 80;

   650 			}

   651 		}

   652 

   653 		//fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,

   654 		// which fails when the server is not set up for it. For compatibility, always connect to the IPv4 address.

   655 		if ( 'localhost' == strtolower($fsockopen_host) )

   656 			$fsockopen_host = '127.0.0.1';

   657 

   658 		// There are issues with the HTTPS and SSL protocols that cause errors that can be safely

   659 		// ignored and should be ignored.

   660 		if ( true === $secure_transport )

   661 			$error_reporting = error_reporting(0);

   662 

   663 		$startDelay = time();

   664 

   665 		$proxy = new WP_HTTP_Proxy();

   666 

   667 		if ( !WP_DEBUG ) {

   668 			if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )

   669 				$handle = @fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );

   670 			else

   671 				$handle = @fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );

   672 		} else {

   673 			if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )

   674 				$handle = fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );

   675 			else

   676 				$handle = fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );

   677 		}

   678 

   679 		$endDelay = time();

   680 

   681 		// If the delay is greater than the timeout then fsockopen shouldn't be used, because it will

   682 		// cause a long delay.

   683 		$elapseDelay = ($endDelay-$startDelay) > $r['timeout'];

   684 		if ( true === $elapseDelay )

   685 			add_option( 'disable_fsockopen', $endDelay, null, true );

   686 

   687 		if ( false === $handle )

   688 			return new WP_Error('http_request_failed', $iError . ': ' . $strError);

   689 

   690 		$timeout = (int) floor( $r['timeout'] );

   691 		$utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;

   692 		stream_set_timeout( $handle, $timeout, $utimeout );

   693 

   694 		if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.

   695 			$requestPath = $url;

   696 		else

   697 			$requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );

   698 

   699 		if ( empty($requestPath) )

   700 			$requestPath .= '/';

   701 

   702 		$strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";

   703 

   704 		if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )

   705 			$strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";

   706 		else

   707 			$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";

   708 

   709 		if ( isset($r['user-agent']) )

   710 			$strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";

   711 

   712 		if ( is_array($r['headers']) ) {

   713 			foreach ( (array) $r['headers'] as $header => $headerValue )

   714 				$strHeaders .= $header . ': ' . $headerValue . "\r\n";

   715 		} else {

   716 			$strHeaders .= $r['headers'];

   717 		}

   718 

   719 		if ( $proxy->use_authentication() )

   720 			$strHeaders .= $proxy->authentication_header() . "\r\n";

   721 

   722 		$strHeaders .= "\r\n";

   723 

   724 		if ( ! is_null($r['body']) )

   725 			$strHeaders .= $r['body'];

   726 

   727 		fwrite($handle, $strHeaders);

   728 

   729 		if ( ! $r['blocking'] ) {

   730 			fclose($handle);

   731 			return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );

   732 		}

   733 

   734 		$strResponse = '';

   735 		$bodyStarted = false;

   736 

   737 		// If streaming to a file setup the file handle

   738 		if ( $r['stream'] ) {

   739 			if ( ! WP_DEBUG )

   740 				$stream_handle = @fopen( $r['filename'], 'w+' );

   741 			else

   742 				$stream_handle = fopen( $r['filename'], 'w+' );

   743 			if ( ! $stream_handle )

   744 				return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );

   745 

   746 			while ( ! feof($handle) ) {

   747 				$block = fread( $handle, 4096 );

   748 				if ( $bodyStarted ) {

   749 					fwrite( $stream_handle, $block );

   750 				} else {

   751 					$strResponse .= $block;

   752 					if ( strpos( $strResponse, "\r\n\r\n" ) ) {

   753 						$process = WP_Http::processResponse( $strResponse );

   754 						$bodyStarted = true;

   755 						fwrite( $stream_handle, $process['body'] );

   756 						unset( $strResponse );

   757 						$process['body'] = '';

   758 					}

   759 				}

   760 			}

   761 

   762 			fclose( $stream_handle );

   763 

   764 		} else {

   765 			while ( ! feof($handle) )

   766 				$strResponse .= fread( $handle, 4096 );

   767 

   768 			$process = WP_Http::processResponse( $strResponse );

   769 			unset( $strResponse );

   770 		}

   771 

   772 		fclose( $handle );

   773 

   774 		if ( true === $secure_transport )

   775 			error_reporting($error_reporting);

   776 

   777 		$arrHeaders = WP_Http::processHeaders( $process['headers'] );

   778 

   779 		// If location is found, then assume redirect and redirect to location.

   780 		if ( isset($arrHeaders['headers']['location']) && 0 !== $r['_redirection'] ) {

   781 			if ( $r['redirection']-- > 0 ) {

   782 				return $this->request( WP_HTTP::make_absolute_url( $arrHeaders['headers']['location'], $url ), $r);

   783 			} else {

   784 				return new WP_Error('http_request_failed', __('Too many redirects.'));

   785 			}

   786 		}

   787 

   788 		// If the body was chunk encoded, then decode it.

   789 		if ( ! empty( $process['body'] ) && isset( $arrHeaders['headers']['transfer-encoding'] ) && 'chunked' == $arrHeaders['headers']['transfer-encoding'] )

   790 			$process['body'] = WP_Http::chunkTransferDecode($process['body']);

   791 

   792 		if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) )

   793 			$process['body'] = WP_Http_Encoding::decompress( $process['body'] );

   794 

   795 		return array( 'headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies'], 'filename' => $r['filename'] );

   796 	}

   797 

   798 	/**

   799 	 * Whether this class can be used for retrieving an URL.

   800 	 *

   801 	 * @since 2.7.0

   802 	 * @static

   803 	 * @return boolean False means this class can not be used, true means it can.

   804 	 */

   805 	public static function test( $args = array() ) {

   806 		if ( ! function_exists( 'fsockopen' ) )

   807 			return false;

   808 

   809 		if ( false !== ($option = get_option( 'disable_fsockopen' )) && time()-$option < 43200 ) // 12 hours

   810 			return false;

   811 

   812 		$is_ssl = isset( $args['ssl'] ) && $args['ssl'];

   813 

   814 		if ( $is_ssl && ! extension_loaded( 'openssl' ) )

   815 			return false;

   816 

   817 		return apply_filters( 'use_fsockopen_transport', true, $args );

   818 	}

   819 }

   820 

   821 /**

   822  * HTTP request method uses Streams to retrieve the url.

   823  *

   824  * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting

   825  * to be enabled.

   826  *

   827  * Second preferred method for getting the URL, for PHP 5.

   828  *

   829  * @package WordPress

   830  * @subpackage HTTP

   831  * @since 2.7.0

   832  */

   833 class WP_Http_Streams {

   834 	/**

   835 	 * Send a HTTP request to a URI using streams with fopen().

   836 	 *

   837 	 * @access public

   838 	 * @since 2.7.0

   839 	 *

   840 	 * @param string $url

   841 	 * @param str|array $args Optional. Override the defaults.

   842 	 * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.

   843 	 */

   844 	function request($url, $args = array()) {

   845 		$defaults = array(

   846 			'method' => 'GET', 'timeout' => 5,

   847 			'redirection' => 5, 'httpversion' => '1.0',

   848 			'blocking' => true,

   849 			'headers' => array(), 'body' => null, 'cookies' => array()

   850 		);

   851 

   852 		$r = wp_parse_args( $args, $defaults );

   853 

   854 		if ( isset($r['headers']['User-Agent']) ) {

   855 			$r['user-agent'] = $r['headers']['User-Agent'];

   856 			unset($r['headers']['User-Agent']);

   857 		} else if ( isset($r['headers']['user-agent']) ) {

   858 			$r['user-agent'] = $r['headers']['user-agent'];

   859 			unset($r['headers']['user-agent']);

   860 		}

   861 

   862 		// Construct Cookie: header if any cookies are set

   863 		WP_Http::buildCookieHeader( $r );

   864 

   865 		$arrURL = parse_url($url);

   866 

   867 		if ( false === $arrURL )

   868 			return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));

   869 

   870 		if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )

   871 			$url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);

   872 

   873 		// Convert Header array to string.

   874 		$strHeaders = '';

   875 		if ( is_array( $r['headers'] ) )

   876 			foreach ( $r['headers'] as $name => $value )

   877 				$strHeaders .= "{$name}: $value\r\n";

   878 		else if ( is_string( $r['headers'] ) )

   879 			$strHeaders = $r['headers'];

   880 

   881 		$is_local = isset($args['local']) && $args['local'];

   882 		$ssl_verify = isset($args['sslverify']) && $args['sslverify'];

   883 		if ( $is_local )

   884 			$ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);

   885 		elseif ( ! $is_local )

   886 			$ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);

   887 

   888 		$arrContext = array('http' =>

   889 			array(

   890 				'method' => strtoupper($r['method']),

   891 				'user_agent' => $r['user-agent'],

   892 				'max_redirects' => $r['redirection'] + 1, // See #11557

   893 				'protocol_version' => (float) $r['httpversion'],

   894 				'header' => $strHeaders,

   895 				'ignore_errors' => true, // Return non-200 requests.

   896 				'timeout' => $r['timeout'],

   897 				'ssl' => array(

   898 						'verify_peer' => $ssl_verify,

   899 						'verify_host' => $ssl_verify

   900 				)

   901 			)

   902 		);

   903 

   904 		$proxy = new WP_HTTP_Proxy();

   905 

   906 		if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {

   907 			$arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port();

   908 			$arrContext['http']['request_fulluri'] = true;

   909 

   910 			// We only support Basic authentication so this will only work if that is what your proxy supports.

   911 			if ( $proxy->use_authentication() )

   912 				$arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";

   913 		}

   914 

   915 		if ( ! empty($r['body'] ) )

   916 			$arrContext['http']['content'] = $r['body'];

   917 

   918 		$context = stream_context_create($arrContext);

   919 

   920 		if ( !WP_DEBUG )

   921 			$handle = @fopen($url, 'r', false, $context);

   922 		else

   923 			$handle = fopen($url, 'r', false, $context);

   924 

   925 		if ( ! $handle )

   926 			return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));

   927 

   928 		$timeout = (int) floor( $r['timeout'] );

   929 		$utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;

   930 		stream_set_timeout( $handle, $timeout, $utimeout );

   931 

   932 		if ( ! $r['blocking'] ) {

   933 			stream_set_blocking($handle, 0);

   934 			fclose($handle);

   935 			return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );

   936 		}

   937 

   938 		if ( $r['stream'] ) {

   939 			if ( ! WP_DEBUG )

   940 				$stream_handle = @fopen( $r['filename'], 'w+' );

   941 			else

   942 				$stream_handle = fopen( $r['filename'], 'w+' );

   943 

   944 			if ( ! $stream_handle )

   945 				return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );

   946 

   947 			stream_copy_to_stream( $handle, $stream_handle );

   948 

   949 			fclose( $stream_handle );

   950 			$strResponse = '';

   951 		} else {

   952 			$strResponse = stream_get_contents( $handle );

   953 		}

   954 

   955 		$meta = stream_get_meta_data( $handle );

   956 

   957 		fclose( $handle );

   958 

   959 		$processedHeaders = array();

   960 		if ( isset( $meta['wrapper_data']['headers'] ) )

   961 			$processedHeaders = WP_Http::processHeaders($meta['wrapper_data']['headers']);

   962 		else

   963 			$processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);

   964 

   965 		// Streams does not provide an error code which we can use to see why the request stream stopped.

   966 		// We can however test to see if a location header is present and return based on that.

   967 		if ( isset($processedHeaders['headers']['location']) && 0 !== $args['_redirection'] )

   968 			return new WP_Error('http_request_failed', __('Too many redirects.'));

   969 

   970 		if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] )

   971 			$strResponse = WP_Http::chunkTransferDecode($strResponse);

   972 

   973 		if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) )

   974 			$strResponse = WP_Http_Encoding::decompress( $strResponse );

   975 

   976 		return array( 'headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies'], 'filename' => $r['filename'] );

   977 	}

   978 

   979 	/**

   980 	 * Whether this class can be used for retrieving an URL.

   981 	 *

   982 	 * @static

   983 	 * @access public

   984 	 * @since 2.7.0

   985 	 *

   986 	 * @return boolean False means this class can not be used, true means it can.

   987 	 */

   988 	public static function test( $args = array() ) {

   989 		if ( ! function_exists( 'fopen' ) )

   990 			return false;

   991 

   992 		if ( ! function_exists( 'ini_get' ) || true != ini_get( 'allow_url_fopen' ) )

   993 			return false;

   994 

   995 		$is_ssl = isset( $args['ssl'] ) && $args['ssl'];

   996 

   997 		if ( $is_ssl && ! extension_loaded( 'openssl' ) )

   998 			return false;

   999 

  1000 		return apply_filters( 'use_streams_transport', true, $args );

  1001 	}

  1002 }

  1003 

  1004 /**

  1005  * HTTP request method uses Curl extension to retrieve the url.

  1006  *

  1007  * Requires the Curl extension to be installed.

  1008  *

  1009  * @package WordPress

  1010  * @subpackage HTTP

  1011  * @since 2.7

  1012  */

  1013 class WP_Http_Curl {

  1014 

  1015 	/**

  1016 	 * Temporary header storage for use with streaming to a file.

  1017 	 *

  1018 	 * @since 3.2.0

  1019 	 * @access private

  1020 	 * @var string

  1021 	 */

  1022 	private $headers = '';

  1023 

  1024 	/**

  1025 	 * Send a HTTP request to a URI using cURL extension.

  1026 	 *

  1027 	 * @access public

  1028 	 * @since 2.7.0

  1029 	 *

  1030 	 * @param string $url

  1031 	 * @param str|array $args Optional. Override the defaults.

  1032 	 * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.

  1033 	 */

  1034 	function request($url, $args = array()) {

  1035 		$defaults = array(

  1036 			'method' => 'GET', 'timeout' => 5,

  1037 			'redirection' => 5, 'httpversion' => '1.0',

  1038 			'blocking' => true,

  1039 			'headers' => array(), 'body' => null, 'cookies' => array()

  1040 		);

  1041 

  1042 		$r = wp_parse_args( $args, $defaults );

  1043 

  1044 		if ( isset($r['headers']['User-Agent']) ) {

  1045 			$r['user-agent'] = $r['headers']['User-Agent'];

  1046 			unset($r['headers']['User-Agent']);

  1047 		} else if ( isset($r['headers']['user-agent']) ) {

  1048 			$r['user-agent'] = $r['headers']['user-agent'];

  1049 			unset($r['headers']['user-agent']);

  1050 		}

  1051 

  1052 		// Construct Cookie: header if any cookies are set.

  1053 		WP_Http::buildCookieHeader( $r );

  1054 

  1055 		$handle = curl_init();

  1056 

  1057 		// cURL offers really easy proxy support.

  1058 		$proxy = new WP_HTTP_Proxy();

  1059 

  1060 		if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {

  1061 

  1062 			curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );

  1063 			curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );

  1064 			curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );

  1065 

  1066 			if ( $proxy->use_authentication() ) {

  1067 				curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );

  1068 				curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );

  1069 			}

  1070 		}

  1071 

  1072 		$is_local = isset($r['local']) && $r['local'];

  1073 		$ssl_verify = isset($r['sslverify']) && $r['sslverify'];

  1074 		if ( $is_local )

  1075 			$ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);

  1076 		elseif ( ! $is_local )

  1077 			$ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);

  1078 

  1079 		// CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since

  1080 		// a value of 0 will allow an unlimited timeout.

  1081 		$timeout = (int) ceil( $r['timeout'] );

  1082 		curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout );

  1083 		curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );

  1084 

  1085 		curl_setopt( $handle, CURLOPT_URL, $url);

  1086 		curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );

  1087 		curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, ( $ssl_verify === true ) ? 2 : false );

  1088 		curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify );

  1089 		curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );

  1090 		// The option doesn't work with safe mode or when open_basedir is set, and there's a

  1091 		// bug #17490 with redirected POST requests, so handle redirections outside Curl.

  1092 		curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, false );

  1093 

  1094 		switch ( $r['method'] ) {

  1095 			case 'HEAD':

  1096 				curl_setopt( $handle, CURLOPT_NOBODY, true );

  1097 				break;

  1098 			case 'POST':

  1099 				curl_setopt( $handle, CURLOPT_POST, true );

  1100 				curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );

  1101 				break;

  1102 			case 'PUT':

  1103 				curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );

  1104 				curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );

  1105 				break;

  1106 			default:

  1107 				curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, $r['method'] );

  1108 				if ( ! empty( $r['body'] ) )

  1109 					curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );

  1110 				break;

  1111 		}

  1112 

  1113 		if ( true === $r['blocking'] )

  1114 			curl_setopt( $handle, CURLOPT_HEADERFUNCTION, array( &$this, 'stream_headers' ) );

  1115 

  1116 		curl_setopt( $handle, CURLOPT_HEADER, false );

  1117 

  1118 		// If streaming to a file open a file handle, and setup our curl streaming handler

  1119 		if ( $r['stream'] ) {

  1120 			if ( ! WP_DEBUG )

  1121 				$stream_handle = @fopen( $r['filename'], 'w+' );

  1122 			else

  1123 				$stream_handle = fopen( $r['filename'], 'w+' );

  1124 			if ( ! $stream_handle )

  1125 				return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );

  1126 			curl_setopt( $handle, CURLOPT_FILE, $stream_handle );

  1127 		}

  1128 

  1129 		if ( !empty( $r['headers'] ) ) {

  1130 			// cURL expects full header strings in each element

  1131 			$headers = array();

  1132 			foreach ( $r['headers'] as $name => $value ) {

  1133 				$headers[] = "{$name}: $value";

  1134 			}

  1135 			curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );