netwerk/test/unit/test_addr_in_use_error.js

   1 // Opening a second listening socket on the same address as an extant
   2 // socket should elicit NS_ERROR_SOCKET_ADDRESS_IN_USE on non-Windows
   3 // machines.
   4
   5 "use strict";
   6
   7 var CC = Components.Constructor;
   8
   9 const ServerSocket = CC(
  10   "@mozilla.org/network/server-socket;1",
  11   "nsIServerSocket",
  12   "init"
  13 );
  14
  15 function testAddrInUse() {
  16   // Windows lets us have as many sockets listening on the same address as
  17   // we like, evidently.
  18   if (mozinfo.os == "win") {
  19     return;
  20   }
  21
  22   // Create listening socket:
  23   // any port (-1), loopback only (true), default backlog (-1)
  24   let listener = ServerSocket(-1, true, -1);
  25   Assert.ok(listener instanceof Ci.nsIServerSocket);
  26
  27   // Try to create another listening socket on the same port, whatever that was.
  28   do_check_throws_nsIException(
  29     () => ServerSocket(listener.port, true, -1),
  30     "NS_ERROR_SOCKET_ADDRESS_IN_USE"
  31   );
  32 }
  33
  34 function run_test() {
  35   testAddrInUse();
  36 }