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23 lines
873 B
JavaScript
23 lines
873 B
JavaScript
Components.utils.import("resource://gre/modules/Services.jsm");
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var modifyObserver = {
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observe: function(subject, topic, data) {
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if (topic == 'http-on-modify-request') {
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var testOk = false;
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try {
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// We should be able to QI the request to an nsIChannel, then get
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// the notificationCallbacks without throwing an exception.
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var ir = subject.QueryInterface(Components.interfaces.nsIChannel).notificationCallbacks;
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// The notificationCallbacks should be an nsIInterfaceRequestor.
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testOk = ir.toString().indexOf(Components.interfaces.nsIInterfaceRequestor) != -1;
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} catch (e) {
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}
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sendAsyncMessage('modify-request-completed', testOk);
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Services.obs.removeObserver(modifyObserver, 'http-on-modify-request');
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}
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}
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};
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Services.obs.addObserver(modifyObserver, 'http-on-modify-request', false);
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