X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fajax%2Fxhr.js;h=91a71de8d6aba61add0ebcb70f1bc4bc69e647ac;hb=4d808a3345f78fab963be96bf272951745b894e3;hp=5629dcd60b8fd671dce1fd5e9fbcd2b2960d3c42;hpb=dd5bf421225d23bc8732a92ea82049859c0cd57a;p=jquery.git diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js index 5629dcd..91a71de 100644 --- a/src/ajax/xhr.js +++ b/src/ajax/xhr.js @@ -1,5 +1,18 @@ (function( jQuery ) { +// Functions to create xhrs +function createStandardXHR() { + try { + return new window.XMLHttpRequest(); + } catch( e ) {} +} + +function createActiveXHR() { + try { + return new window.ActiveXObject("Microsoft.XMLHTTP"); + } catch( e ) {} +} + var // Next active xhr id xhrId = jQuery.now(), @@ -22,27 +35,13 @@ jQuery.ajaxSettings.xhr = window.ActiveXObject ? * we need a fallback. */ function() { - if ( window.location.protocol !== "file:" ) { - try { - return new window.XMLHttpRequest(); - } catch( xhrError ) {} - } - - try { - return new window.ActiveXObject("Microsoft.XMLHTTP"); - } catch( activeError ) {} + return !this.isLocal && createStandardXHR() || createActiveXHR(); } : // For all other browsers, use the standard XMLHttpRequest object - function() { - return new window.XMLHttpRequest(); - }; + createStandardXHR; // Test if we can create an xhr object -try { - testXHR = jQuery.ajaxSettings.xhr(); -} catch( xhrCreationException ) {} - -//Does this browser support XHR requests? +testXHR = jQuery.ajaxSettings.xhr(); jQuery.support.ajax = !!testXHR; // Does this browser support crossDomain XHR requests @@ -82,7 +81,8 @@ if ( jQuery.support.ajax ) { // Get a new xhr var xhr = s.xhr(), - handle; + handle, + i; // Open the socket // Passing null username, generates a login popup on Opera (#2865) @@ -92,6 +92,13 @@ if ( jQuery.support.ajax ) { xhr.open( s.type, s.url, s.async ); } + // Apply custom fields if provided + if ( s.xhrFields ) { + for ( i in s.xhrFields ) { + xhr[ i ] = s.xhrFields[ i ]; + } + } + // Requested-With header // Not set for crossDomain requests with no content // (see why at http://trac.dojotoolkit.org/ticket/9486) @@ -108,84 +115,99 @@ if ( jQuery.support.ajax ) { } catch( _ ) {} // Do send the request - try { - xhr.send( ( s.hasContent && s.data ) || null ); - } catch( e ) { - complete( 0, "error", "" + e ); - return; - } + // This may raise an exception which is actually + // handled in jQuery.ajax (so no try/catch here) + xhr.send( ( s.hasContent && s.data ) || null ); // Listener callback = function( _, isAbort ) { - // Was never called and is aborted or complete - if ( callback && ( isAbort || xhr.readyState === 4 ) ) { + var status, + statusText, + responseHeaders, + responses, + xml; - // Only called once - callback = 0; + // Firefox throws exceptions when accessing properties + // of an xhr when a network error occured + // http://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_(NS_ERROR_NOT_AVAILABLE) + try { - // Do not keep as active anymore - if ( handle ) { - xhr.onreadystatechange = jQuery.noop; - delete xhrs[ handle ]; - } + // Was never called and is aborted or complete + if ( callback && ( isAbort || xhr.readyState === 4 ) ) { + + // Only called once + callback = undefined; - // If it's an abort - if ( isAbort ) { - // Abort it manually if needed - if ( xhr.readyState !== 4 ) { - xhr.abort(); + // Do not keep as active anymore + if ( handle ) { + xhr.onreadystatechange = jQuery.noop; + delete xhrs[ handle ]; } - } else { - // Get info - var status = xhr.status, - statusText, - responseHeaders = xhr.getAllResponseHeaders(), - responses = {}, + + // If it's an abort + if ( isAbort ) { + // Abort it manually if needed + if ( xhr.readyState !== 4 ) { + xhr.abort(); + } + } else { + // Get info + status = xhr.status; + responseHeaders = xhr.getAllResponseHeaders(); + responses = {}; xml = xhr.responseXML; - // Construct response list - if ( xml && xml.documentElement /* #4958 */ ) { - responses.xml = xml; + // Construct response list + if ( xml && xml.documentElement /* #4958 */ ) { + responses.xml = xml; + } + responses.text = xhr.responseText; + + // Firefox throws an exception when accessing + // statusText for faulty cross-domain requests + try { + statusText = xhr.statusText; + } catch( e ) { + // We normalize with Webkit giving an empty statusText + statusText = ""; + } + + // Filter status for non standard behaviors + + // IE - #1450: sometimes returns 1223 when it should be 204 + if ( status === 1223 ) { + status = 204; + // Status 0 encompasses several cases + } else if ( !status ) { + // Cross-domain + if ( s.crossDomain ) { + if ( !s.statusText ) { + // FF, Webkit (other?): There is no status text for errors + // 302 is the most generic cross-domain status code + // for errors, could be anything really (even a real 0) + status = 302; + } + // All same-domain: for local files, 0 is a success + } else if( s.isLocal ) { + status = 200; + // Opera: this notifies success for all requests + // (verified in 11.01). Patch welcome. + } + // Opera - #6060: sets status as 0 for 304 + // Patch welcome. + } } - responses.text = xhr.responseText; - - // Firefox throws an exception when accessing - // statusText for faulty cross-domain requests - try { - statusText = xhr.statusText; - } catch( e ) { - // We normalize with Webkit giving an empty statusText - statusText = ""; - } - - // Filter status for non standard behaviours - status = - // Opera returns 0 when it should be 304 - // Webkit returns 0 for failing cross-domain no matter the real status - status === 0 ? - ( - // Webkit, Firefox: filter out faulty cross-domain requests - !s.crossDomain || statusText ? - ( - // Opera: filter out real aborts #6060 - responseHeaders ? - 304 : - 0 - ) : - // We assume 302 but could be anything cross-domain related - 302 - ) : - ( - // IE sometimes returns 1223 when it should be 204 (see #1450) - status == 1223 ? - 204 : - status - ); - - // Call complete - complete( status, statusText, responses, responseHeaders ); } + } catch( firefoxAccessException ) { + if ( !isAbort ) { + complete( -1, firefoxAccessException ); + } + } + + // Call complete if needed + if ( responses ) { + complete( status, statusText, responses, responseHeaders ); } };