The Tor Browser / file revision

 // This is just a crashtest for a url that is rejected at parse time (port 80,000)

 function completeTest(request, data, ctx)

 {

     do_test_finished();

 }

 function run_test()

 {

     var ios = Components.classes["@mozilla.org/network/io-service;1"].

                          getService(Components.interfaces.nsIIOService);

     var chan = ios.newChannel("http://localhost:80000/", "", null);

     var httpChan = chan.QueryInterface(Components.interfaces.nsIHttpChannel);

     httpChan.asyncOpen(new ChannelListener(completeTest,

                                            httpChan, CL_EXPECT_FAILURE), null);

     do_test_pending();

 }