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 ) {
} 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)
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 );
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 =
:
status
);
-
+
// Guess response if needed & update datatype accordingly
if ( status >= 200 && status < 300 ) {
- response =
+ response =
determineDataType(
s,
xhr.getResponseHeader("content-type"),
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