Disable the X-Requested-With header to avoid preflighting remote POST requests. Fixes #4601.
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12
src/ajax.js
12
src/ajax.js
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@ -275,13 +275,12 @@ jQuery.extend({
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}
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// Matches an absolute URL, and saves the domain
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var parts = rurl.exec( s.url );
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var parts = rurl.exec( s.url ),
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remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);
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// If we're requesting a remote document
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// and trying to load JSON or Script with a GET
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if ( s.dataType === "script" && type === "GET" && parts
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&& ( parts[1] && parts[1] !== location.protocol || parts[2] !== location.host )) {
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if ( s.dataType === "script" && type === "GET" && remote ) {
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var head = document.getElementsByTagName("head")[0] || document.documentElement;
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var script = document.createElement("script");
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script.src = s.url;
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@ -350,7 +349,10 @@ jQuery.extend({
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}
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// Set header so the called script knows that it's an XMLHttpRequest
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xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
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// Only send the header if it's not a remote XHR
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if ( !remote ) {
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xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
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}
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// Set the Accepts header for the server, depending on the dataType
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xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
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