+++ /dev/null
-(function( jQuery ) {
-
-var // Next fake timer id
- xhrPollingId = jQuery.now(),
-
- // Callbacks hashtable
- xhrs = {},
-
- // #5280: see end of file
- xhrUnloadAbortMarker = [];
-
-
-jQuery.ajax.transport( function( s , determineDataType ) {
-
- // Cross domain only allowed if supported through XMLHttpRequest
- if ( ! s.crossDomain || jQuery.support.cors ) {
-
- var callback;
-
- return {
-
- send: function(headers, complete) {
-
- var xhr = s.xhr(),
- handle;
-
- // Open the socket
- // Passing null username, generates a login popup on Opera (#2865)
- if ( s.username ) {
- xhr.open(s.type, s.url, s.async, s.username, s.password);
- } else {
- xhr.open(s.type, s.url, s.async);
- }
-
- // Requested-With header
- // Not set for crossDomain requests with no content
- // (see why at http://trac.dojotoolkit.org/ticket/9486)
- // Won't change header if already provided in beforeSend
- if ( ! ( s.crossDomain && ! s.hasContent ) && ! headers["x-requested-with"] ) {
- headers["x-requested-with"] = "XMLHttpRequest";
- }
-
- // Need an extra try/catch for cross domain requests in Firefox 3
- try {
-
- jQuery.each(headers, function(key,value) {
- xhr.setRequestHeader(key,value);
- });
-
- } catch(_) {}
-
- // Do send the request
- try {
- xhr.send( ( s.hasContent && s.data ) || null );
- } catch(e) {
- complete(0, "error", "" + e);
- return;
- }
-
- // Listener
- callback = function ( abortStatusText ) {
-
- // Was never called and is aborted or complete
- if ( callback && ( abortStatusText || xhr.readyState === 4 ) ) {
-
- // Do not listen anymore
- if (handle) {
- xhr.onreadystatechange = jQuery.noop;
- delete xhrs[ handle ];
- handle = undefined;
- }
-
- callback = 0;
-
- // Get info
- var status, statusText, response, responseHeaders;
-
- if ( abortStatusText ) {
-
- if ( xhr.readyState !== 4 ) {
- xhr.abort();
- }
-
- // Stop here if unloadAbort
- if ( abortStatusText === xhrUnloadAbortMarker ) {
- return;
- }
-
- status = 0;
- statusText = abortStatusText;
-
- } else {
-
- status = xhr.status;
-
- try { // Firefox throws an exception when accessing statusText for faulty cross-domain requests
-
- statusText = xhr.statusText;
-
- } catch( e ) {
-
- statusText = ""; // We normalize with Webkit giving an empty statusText
-
- }
-
- responseHeaders = xhr.getAllResponseHeaders();
-
- // Filter status for non standard behaviours
- // (so many they seem to be the actual "standard")
- status =
- // Opera returns 0 when it should be 304
- // Webkit returns 0 for failing cross-domain no matter the real status
- status === 0 ?
- (
- ! s.crossDomain || statusText ? // Webkit, Firefox: filter out faulty cross-domain requests
- (
- responseHeaders ? // Opera: filter out real aborts #6060
- 304
- :
- 0
- )
- :
- 302 // We assume 302 but could be anything cross-domain related
- )
- :
- (
- status == 1223 ? // IE sometimes returns 1223 when it should be 204 (see #1450)
- 204
- :
- status
- );
-
- // Guess response if needed & update datatype accordingly
- if ( status >= 200 && status < 300 ) {
- response =
- determineDataType(
- s,
- xhr.getResponseHeader("content-type"),
- xhr.responseText,
- xhr.responseXML );
- }
- }
-
- // Call complete
- complete(status,statusText,response,responseHeaders);
- }
- };
-
- // if we're in sync mode
- // or it's in cache and has been retrieved directly (IE6 & IE7)
- // we need to manually fire the callback
- if ( ! s.async || xhr.readyState === 4 ) {
-
- callback();
-
- } else {
-
- // Listener is externalized to handle abort on unload
- handle = xhrPollingId++;
- xhrs[ handle ] = xhr;
- xhr.onreadystatechange = function() {
- callback();
- };
- }
- },
-
- abort: function(statusText) {
- if ( callback ) {
- callback(statusText);
- }
- }
- };
- }
-});
-
-// #5280: we need to abort on unload or IE will keep connections alive
-jQuery(window).bind( "unload" , function() {
-
- // Abort all pending requests
- jQuery.each(xhrs, function(_, xhr) {
- if ( xhr.onreadystatechange ) {
- xhr.onreadystatechange( xhrUnloadAbortMarker );
- }
- });
-
- // Resest polling structure to be safe
- xhrs = {};
-
-});
-
-})( jQuery );
git.asbjorn.biz / jquery.git / blobdiff