do_load_httpd_js(); const BUGID = "369787"; var server = null; var channel = null; function change_content_type() { var origType = channel.contentType; const newType = "x-foo/x-bar"; channel.contentType = newType; do_check_eq(channel.contentType, newType); channel.contentType = origType; do_check_eq(channel.contentType, origType); } function TestListener() { } TestListener.prototype.onStartRequest = function(request, context) { try { // request might be different from channel channel = request.QueryInterface(Components.interfaces.nsIChannel); change_content_type(); } catch (ex) { print(ex); throw ex; } } TestListener.prototype.onStopRequest = function(request, context, status) { try { change_content_type(); } catch (ex) { print(ex); // don't re-throw ex to avoid hanging the test } do_timeout(0, after_channel_closed); } function after_channel_closed() { try { change_content_type(); } finally { server.stop(do_test_finished); } } function run_test() { // start server server = new nsHttpServer(); server.registerPathHandler("/bug" + BUGID, bug369787); server.start(4444); // make request channel = Components.classes["@mozilla.org/network/io-service;1"]. getService(Components.interfaces.nsIIOService). newChannel("http://localhost:4444/bug" + BUGID, null, null); channel.QueryInterface(Components.interfaces.nsIHttpChannel); channel.asyncOpen(new TestListener(), null); do_test_pending(); } // PATH HANDLER FOR /bug369787 function bug369787(metadata, response) { /* do nothing */ }