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Changeset 17550
- Timestamp:
- 03/24/2011 02:16:13 AM (15 years ago)
- File:
-
- 1 edited
-
trunk/wp-includes/class-http.php (modified) (7 diffs)
Legend:
- Unmodified
- Added
- Removed
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trunk/wp-includes/class-http.php
r17535 r17550 37 37 */ 38 38 class WP_Http { 39 40 /**41 * PHP4 style Constructor - Calls PHP5 Style Constructor42 *43 * @since 2.7.044 * @return WP_Http45 */46 function WP_Http() {47 $this->__construct();48 }49 50 /**51 * PHP5 style Constructor - Set up available transport if not available.52 *53 * PHP4 does not have the 'self' keyword and since WordPress supports PHP4, the class needs to54 * be used for the static call. The transport are set up to save time and will only be created55 * once. This class can be created many times without having to go through the step of finding56 * which transports are available.57 *58 * @since 2.7.059 * @return WP_Http60 */61 function __construct() {62 WP_Http::_getTransport();63 WP_Http::_postTransport();64 }65 66 /**67 * Tests the WordPress HTTP objects for an object to use and returns it.68 *69 * Tests all of the objects and returns the object that passes. Also caches that object to be70 * used later.71 *72 * The order for the GET/HEAD requests are HTTP Extension, cURL, Streams, and finally73 * Fsockopen. fsockopen() is used last, because it has the most overhead in its implementation.74 * There isn't any real way around it, since redirects have to be supported, much the same way75 * the other transports also handle redirects.76 *77 * There are currently issues with "localhost" not resolving correctly with DNS. This may cause78 * an error "failed to open stream: A connection attempt failed because the connected party did79 * not properly respond after a period of time, or established connection failed because [the]80 * connected host has failed to respond."81 *82 * @since 2.7.083 * @access private84 *85 * @param array $args Request args, default us an empty array86 * @return object|null Null if no transports are available, HTTP transport object.87 */88 function &_getTransport( $args = array() ) {89 static $working_transport, $blocking_transport, $nonblocking_transport;90 91 if ( is_null($working_transport) ) {92 if ( true === WP_Http_ExtHttp::test($args) ) {93 $working_transport['exthttp'] = new WP_Http_ExtHttp();94 $blocking_transport[] = &$working_transport['exthttp'];95 } else if ( true === WP_Http_Curl::test($args) ) {96 $working_transport['curl'] = new WP_Http_Curl();97 $blocking_transport[] = &$working_transport['curl'];98 } else if ( true === WP_Http_Streams::test($args) ) {99 $working_transport['streams'] = new WP_Http_Streams();100 $blocking_transport[] = &$working_transport['streams'];101 } else if ( true === WP_Http_Fsockopen::test($args) ) {102 $working_transport['fsockopen'] = new WP_Http_Fsockopen();103 $blocking_transport[] = &$working_transport['fsockopen'];104 }105 106 foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) {107 if ( isset($working_transport[$transport]) )108 $nonblocking_transport[] = &$working_transport[$transport];109 }110 }111 112 do_action( 'http_transport_get_debug', $working_transport, $blocking_transport, $nonblocking_transport );113 114 if ( isset($args['blocking']) && !$args['blocking'] )115 return $nonblocking_transport;116 else117 return $blocking_transport;118 }119 120 /**121 * Tests the WordPress HTTP objects for an object to use and returns it.122 *123 * Tests all of the objects and returns the object that passes. Also caches124 * that object to be used later. This is for posting content to a URL and125 * is used when there is a body.126 *127 * @since 2.7.0128 * @access private129 *130 * @param array $args Request args, default us an empty array131 * @return object|null Null if no transports are available, HTTP transport object.132 */133 function &_postTransport( $args = array() ) {134 static $working_transport, $blocking_transport, $nonblocking_transport;135 136 if ( is_null($working_transport) ) {137 if ( true === WP_Http_ExtHttp::test($args) ) {138 $working_transport['exthttp'] = new WP_Http_ExtHttp();139 $blocking_transport[] = &$working_transport['exthttp'];140 } else if ( true === WP_Http_Curl::test($args) ) {141 $working_transport['curl'] = new WP_Http_Curl();142 $blocking_transport[] = &$working_transport['curl'];143 } else if ( true === WP_Http_Streams::test($args) ) {144 $working_transport['streams'] = new WP_Http_Streams();145 $blocking_transport[] = &$working_transport['streams'];146 } else if ( true === WP_Http_Fsockopen::test($args) ) {147 $working_transport['fsockopen'] = new WP_Http_Fsockopen();148 $blocking_transport[] = &$working_transport['fsockopen'];149 }150 151 foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) {152 if ( isset($working_transport[$transport]) )153 $nonblocking_transport[] = &$working_transport[$transport];154 }155 }156 157 do_action( 'http_transport_post_debug', $working_transport, $blocking_transport, $nonblocking_transport );158 159 if ( isset($args['blocking']) && !$args['blocking'] )160 return $nonblocking_transport;161 else162 return $blocking_transport;163 }164 39 165 40 /** … … 206 81 * @param string $url URI resource. 207 82 * @param str|array $args Optional. Override the defaults. 208 * @return array containing 'headers', 'body', 'response', 'cookies'83 * @return array|object Array containing 'headers', 'body', 'response', 'cookies'. A WP_Error instance upon error 209 84 */ 210 85 function request( $url, $args = array() ) { … … 282 157 if ( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset( $r['headers']['Content-Length'] ) ) 283 158 $r['headers']['Content-Length'] = 0; 284 285 // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in286 // this case is simply that we aren't sending any bodies and to get the transports that287 // don't support sending bodies along with those which do.288 $transports = WP_Http::_getTransport( $r );289 159 } else { 290 160 if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) { … … 296 166 if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) ) 297 167 $r['headers']['Content-Length'] = strlen( $r['body'] ); 298 299 // The method is ambiguous, because we aren't talking about HTTP methods, the "post" in 300 // this case is simply that we are sending HTTP body and to get the transports that do 301 // support sending the body. Not all do, depending on the limitations of the PHP core 302 // limitations. 303 $transports = WP_Http::_postTransport( $r ); 304 } 305 306 do_action( 'http_api_debug', $transports, 'transports_list' ); 307 308 $response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); 309 foreach ( (array) $transports as $transport ) { 310 $response = $transport->request( $url, $r ); 311 312 do_action( 'http_api_debug', $response, 'response', get_class( $transport ) ); 313 314 if ( ! is_wp_error( $response ) ) 315 return apply_filters( 'http_response', $response, $r, $url ); 316 } 317 318 return $response; 168 } 169 170 return $this->_dispatch_request($url, $r); 171 } 172 173 /** 174 * Dispatches a HTTP request to a supporting transport. 175 * 176 * Tests each transport in order to find a transport which matches the request arguements. 177 * Also caches the transport instance to be used later. 178 * 179 * The order for blocking requests is HTTP Extension, cURL, Streams, and finally Fsockopen. 180 * The order for non-blocking requests is cURL, Streams, Fsockopen() and finally, HTTP Extension. 181 * The HTTP Extension does not support non-blocking requests, but is included as a final resort. 182 * 183 * There are currently issues with "localhost" not resolving correctly with DNS. This may cause 184 * an error "failed to open stream: A connection attempt failed because the connected party did 185 * not properly respond after a period of time, or established connection failed because [the] 186 * connected host has failed to respond." 187 * 188 * @since 3.2.0 189 * @access private 190 * 191 * @param string $url URL to Request 192 * @param array $args Request arguments 193 * @return array|object Array containing 'headers', 'body', 'response', 'cookies'. A WP_Error instance upon error 194 */ 195 private function _dispatch_request($url, $args) { 196 static $transports = null; 197 if ( is_null($transports) ) 198 $transports = array(); 199 200 $request_order = isset($r['blocking']) && !$r['blocking'] ? 201 array('curl', 'streams', 'fsockopen', 'exthttp') : // non-blocking order 202 array('exthttp', 'curl', 'streams', 'fsockopen'); // blocking order 203 204 // Loop over each transport on each HTTP request looking for one which will serve this requests needs 205 foreach ( $request_order as $transport ) { 206 $class = 'WP_HTTP_' . $transport; 207 208 // Check to see if this transport is a possibility, calls the transport statically 209 if ( ! call_user_func( array($class, 'test'), $args, $url) ) 210 continue; 211 212 // Transport claims to support request, Instantate it and give it a whirl. 213 if ( empty( $transports[ $transport ] ) ) 214 $transports[ $transport ] = new $class; 215 216 $response = $transports[ $transport ]->request( $url, $args ); 217 218 do_action( 'http_api_debug', $response, 'response', $class ); 219 220 if ( is_wp_error( $response ) ) 221 return $response; 222 223 return apply_filters( 'http_response', $response, $args, $url ); 224 } 225 226 return new WP_Error('http_failure', __('There are no HTTP transports available which can complete the requested request.') ); 319 227 } 320 228 … … 329 237 * @param string $url URI resource. 330 238 * @param str|array $args Optional. Override the defaults. 331 * @return boolean239 * @return array|object Array containing 'headers', 'body', 'response', 'cookies'. A WP_Error instance upon error 332 240 */ 333 241 function post($url, $args = array()) { … … 347 255 * @param string $url URI resource. 348 256 * @param str|array $args Optional. Override the defaults. 349 * @return boolean257 * @return array|object Array containing 'headers', 'body', 'response', 'cookies'. A WP_Error instance upon error 350 258 */ 351 259 function get($url, $args = array()) { … … 365 273 * @param string $url URI resource. 366 274 * @param str|array $args Optional. Override the defaults. 367 * @return boolean275 * @return array|object Array containing 'headers', 'body', 'response', 'cookies'. A WP_Error instance upon error 368 276 */ 369 277 function head($url, $args = array()) {
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