(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(),
// XHR used to determine supports properties
testXHR;
-// Create the request object; Microsoft failed to properly
-// (This is still attached to ajaxSettings for backward compatibility reasons)
+// Create the request object
+// (This is still attached to ajaxSettings for backward compatibility)
jQuery.ajaxSettings.xhr = window.ActiveXObject ?
/* Microsoft failed to properly
* implement the XMLHttpRequest in IE7 (can't request local files),
* 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
-jQuery.support.cors = testXHR && "withCredentials" in testXHR;
+jQuery.support.cors = testXHR && ( "withCredentials" in testXHR );
// No need for the temporary xhr anymore
testXHR = undefined;
// Create transport if the browser can provide an xhr
if ( jQuery.support.ajax ) {
- jQuery.ajaxTransport( function( s ) {
+ jQuery.ajaxTransport(function( s ) {
// Cross domain only allowed if supported through XMLHttpRequest
- if ( ! s.crossDomain || jQuery.support.cors ) {
+ if ( !s.crossDomain || jQuery.support.cors ) {
var callback;
return {
-
- send: function(headers, complete) {
+ send: function( headers, complete ) {
// #5280: we need to abort on unload or IE will keep connections alive
- if ( ! xhrUnloadAbortInstalled ) {
+ if ( !xhrUnloadAbortInstalled ) {
xhrUnloadAbortInstalled = 1;
- jQuery(window).bind( "unload" , function() {
+ jQuery(window).bind( "unload", function() {
// Abort all pending requests
- jQuery.each(xhrs, function(_, xhr) {
+ jQuery.each( xhrs, function( _, xhr ) {
if ( xhr.onreadystatechange ) {
xhr.onreadystatechange( 1 );
}
- });
+ } );
- });
+ } );
}
// Get a new xhr
var xhr = s.xhr(),
- handle;
+ handle,
+ i;
// 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);
+ xhr.open( s.type, s.url, s.async, s.username, s.password );
} else {
- xhr.open(s.type, s.url, s.async);
+ 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)
// Won't change header if already provided
- if ( ! ( s.crossDomain && ! s.hasContent ) && ! headers["x-requested-with"] ) {
- headers["x-requested-with"] = "XMLHttpRequest";
+ 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(_) {}
+ 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;
- }
+ // 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 ) {
+ 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
- // and store back into pool
- if (handle) {
- xhr.onreadystatechange = jQuery.noop;
- delete xhrs[ handle ];
- }
+ // Was never called and is aborted or complete
+ if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
- // If it's an abort
- if ( isAbort ) {
+ // Only called once
+ callback = undefined;
- // 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,
- response,
+ // 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();
-
- 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
-
+ responses = {};
+ xml = xhr.responseXML;
+
+ // 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;
+ // Various - #8177: a Not Modified response was received
+ // yet no conditional request headers was provided
+ } else if ( status === 304 &&
+ !headers[ "if-modified-since" ] &&
+ !headers[ "if-none-match" ] ) {
+ status = 200;
+ // 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.
+ }
}
-
- // 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 & update dataType accordingly
- response =
- s.determineDataType(
- xhr.getResponseHeader("content-type"),
- xhr.responseText,
- xhr.responseXML );
-
- // Call complete
- complete(status,statusText,response,responseHeaders);
}
+ } catch( firefoxAccessException ) {
+ if ( !isAbort ) {
+ complete( -1, firefoxAccessException );
+ }
+ }
+
+ // Call complete if needed
+ if ( responses ) {
+ complete( status, statusText, responses, responseHeaders );
}
};
- // if we're in sync mode
- // or it's in cache and has been retrieved directly (IE6 & IE7)
+ // 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 ) {
-
+ if ( !s.async || xhr.readyState === 4 ) {
callback();
-
} else {
-
// Add to list of active xhrs
handle = xhrId++;
xhrs[ handle ] = xhr;
git.asbjorn.biz / jquery.git / blobdiff