(function( jQuery ) {
+var // #5280: next active xhr id and list of active xhrs' callbacks
+ xhrId = jQuery.now(),
+ xhrCallbacks,
+
+ // XHR used to determine supports properties
+ testXHR;
+
+// #5280: Internet Explorer will keep connections alive if we don't abort on unload
+function xhrOnUnloadAbort() {
+ jQuery( window ).unload(function() {
+ // Abort all pending requests
+ for ( var key in xhrCallbacks ) {
+ xhrCallbacks[ key ]( 0, 1 );
+ }
+ });
+}
+
// Functions to create xhrs
function createStandardXHR() {
try {
} catch( e ) {}
}
-var // Next active xhr id
- xhrId = jQuery.now(),
-
- // active xhrs
- xhrs = {},
-
- // #5280: see below
- xhrUnloadAbortInstalled,
-
- // XHR used to determine supports properties
- testXHR,
-
- // Keep track of isLocal in case it gets removed
- // from ajaxSettings later on
- protocolIsLocal = jQuery.ajaxSettings.isLocal;
-
// Create the request object
// (This is still attached to ajaxSettings for backward compatibility)
jQuery.ajaxSettings.xhr = window.ActiveXObject ?
* Additionally XMLHttpRequest can be disabled in IE7/IE8 so
* we need a fallback.
*/
- ( protocolIsLocal ?
- createActiveXHR :
- function() {
- return createStandardXHR() || createActiveXHR();
- }
- ) :
+ function() {
+ return !this.isLocal && createStandardXHR() || createActiveXHR();
+ } :
// For all other browsers, use the standard XMLHttpRequest object
createStandardXHR;
return {
send: function( headers, complete ) {
- // #5280: we need to abort on unload or IE will keep connections alive
- if ( !xhrUnloadAbortInstalled ) {
-
- xhrUnloadAbortInstalled = 1;
-
- jQuery(window).bind( "unload", function() {
-
- // Abort all pending requests
- jQuery.each( xhrs, function( _, xhr ) {
- if ( xhr.onreadystatechange ) {
- xhr.onreadystatechange( 1 );
- }
- } );
-
- } );
- }
-
// Get a new xhr
var xhr = s.xhr(),
handle,
}
}
+ // Override mime type if needed
+ if ( s.mimeType && xhr.overrideMimeType ) {
+ xhr.overrideMimeType( s.mimeType );
+ }
+
// Requested-With header
// Not set for crossDomain requests with no content
// (see why at http://trac.dojotoolkit.org/ticket/9486)
// Need an extra try/catch for cross domain requests in Firefox 3
try {
- jQuery.each( headers, function( key, value ) {
- xhr.setRequestHeader( key, value );
- } );
+ for ( i in headers ) {
+ xhr.setRequestHeader( i, headers[ i ] );
+ }
} catch( _ ) {}
// Do send the request
// Do not keep as active anymore
if ( handle ) {
xhr.onreadystatechange = jQuery.noop;
- delete xhrs[ handle ];
+ delete xhrCallbacks[ handle ];
}
// If it's an abort
xhr.abort();
}
} else {
- // Get info
status = xhr.status;
responseHeaders = xhr.getAllResponseHeaders();
responses = {};
}
// 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( protocolIsLocal ) {
- 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.
- }
+ status =
+ // If the request is local and we have data: assume a success
+ // (success with no data won't get notified, that's the best we
+ // can do given current implementations)
+ !status && s.isLocal ?
+ ( responses.text ? 200 : 404 ) :
+ // IE - #1450: sometimes returns 1223 when it should be 204
+ ( status === 1223 ? 204 : status );
}
}
} catch( firefoxAccessException ) {
if ( !s.async || xhr.readyState === 4 ) {
callback();
} else {
- // Add to list of active xhrs
+ // Create the active xhrs callbacks list if needed
+ // and attach the unload handler
+ if ( !xhrCallbacks ) {
+ xhrCallbacks = {};
+ xhrOnUnloadAbort();
+ }
+ // Add to list of active xhrs callbacks
handle = xhrId++;
- xhrs[ handle ] = xhr;
- xhr.onreadystatechange = callback;
+ xhr.onreadystatechange = xhrCallbacks[ handle ] = callback;
}
},
git.asbjorn.biz / jquery.git / blobdiff