michael@0: /**
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: "use strict";
michael@0: 
michael@0: var customHeader = "custom-key";
michael@0: var customHeaderValue = "custom-key-value";
michael@0: 
michael@0: self.onmessage = function(event) {
michael@0:   var xhr = new XMLHttpRequest();
michael@0:   xhr.open("GET", event.data, false);
michael@0:   xhr.setRequestHeader(customHeader, customHeaderValue);
michael@0:   xhr.send();
michael@0:   postMessage({ response: xhr.responseText, header: customHeader });
michael@0: }