michael@0: // Opening a second listening socket on the same address as an extant
michael@0: // socket should elicit NS_ERROR_SOCKET_ADDRESS_IN_USE on non-Windows
michael@0: // machines.
michael@0: 
michael@0: const CC = Components.Constructor;
michael@0: 
michael@0: const ServerSocket = CC("@mozilla.org/network/server-socket;1",
michael@0:                         "nsIServerSocket",
michael@0:                         "init");
michael@0: 
michael@0: function testAddrInUse()
michael@0: {
michael@0:   // Windows lets us have as many sockets listening on the same address as
michael@0:   // we like, evidently.
michael@0:   if ("@mozilla.org/windows-registry-key;1" in Cc) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // Create listening socket:
michael@0:   // any port (-1), loopback only (true), default backlog (-1)
michael@0:   let listener = ServerSocket(-1, true, -1);
michael@0:   do_check_true(listener instanceof Ci.nsIServerSocket);
michael@0: 
michael@0:   // Try to create another listening socket on the same port, whatever that was.
michael@0:   do_check_throws_nsIException(() => ServerSocket(listener.port, true, -1),
michael@0:                                "NS_ERROR_SOCKET_ADDRESS_IN_USE");
michael@0: }
michael@0: 
michael@0: function run_test()
michael@0: {
michael@0:   testAddrInUse();
michael@0: }