[omniORB] Callback Problem with Firewall, using OmniNames, bidir GIOP

[roger]

I am posting this issue in connection with presence of firewalls in the
network. We have a firewall sitting in between client and server, filtering
packets based on TCP ports. A client invokes method on the proxy, which
leads to the server invoking a CALL BACK method on the client object.
I was going through omniORB 4.0.3 documentation and found how to achieve
Bi-directional GIOP, which allows callbacks to be made using a connection
opened by the original client. Based example on src\examples\bidir. ============server code==================================================   const char* options[][2] = {
    { "traceLevel", "40" }, 
    { "traceExceptions", "1" },
    { "acceptBiDirectionalGIOP", "1" },
    { "serverTransportRule", "* unix,tcp,bidir" },  
    { "endPoint", "giop:tcp::7788" },
    { 0, 0 }
   };   //  Initialise the ORB.
 orb = CORBA::ORB_init(argc, argv,"omniORB4",options); {
      CORBA::Object_var obj = orb->resolve_initial_references("RootPOA");
   //CORBA::Object_var obj = orb->resolve_initial_references("omniINSPOA");
      PortableServer::POA_var rootpoa = PortableServer::POA::_narrow(obj);
      PortableServer::POAManager_var pman = rootpoa->the_POAManager();
      pman->activate();      // Create a POA with the Bidirectional policy
      CORBA::PolicyList pl;
      pl.length(1);
      CORBA::Any a;
      a <<= BiDirPolicy::BOTH;
      pl[0] = orb->create_policy(BiDirPolicy::BIDIRECTIONAL_POLICY_TYPE, a);      PortableServer::POA_var poa = rootpoa->create_POA("bidir", pman, pl);      server_i* myserver = new server_i();
   PortableServer::ObjectId_var myserver_id = PortableServer::string_to_ObjectId("bidirService");   
   rootpoa->activate_object_with_id(myserver_id, myserver);
   //poa->activate_object_with_id(myserver_id, myserver);
      PortableServer::ObjectId_var oid = poa->activate_object(myserver);    
      obj = myserver->_this();
      myserver->_remove_ref();
      CORBA::String_var sior(orb->object_to_string(obj));
   cerr <<std::endl<< "Servant ObjectId£º'" << (char*) sior << "'" << endl;
      orb->run();
    }    cerr << "bd_server: Returned from orb->run()." << endl;
    orb->destroy(); ============client code==================================================   const char* options[][2] = {
    { "traceLevel", "40" }, 
    { "traceExceptions", "1" },
    { "offerBiDirectionalGIOP", "1" },
    { "clientTransportRule", "* unix,tcp,bidir" }, 
    { 0, 0 }
   };     //  Initialise the ORB.
   CORBA::ORB_var orb = CORBA::ORB_init(argc, argv,"omniORB4",options);    {
      CORBA::Object_var obj;      // Initialise the POA.
      //obj = orb->resolve_initial_references("RootPOA");
   obj = orb->resolve_initial_references("omniINSPOA");
      PortableServer::POA_var rootpoa = PortableServer::POA::_narrow(obj);
      PortableServer::POAManager_var pman = rootpoa->the_POAManager();
      pman->activate();      // Create a POA with the Bidirectional policy
      CORBA::PolicyList pl;
      pl.length(1);
      CORBA::Any a;
      a <<= BiDirPolicy::BOTH;
      pl[0] = orb->create_policy(BiDirPolicy::BIDIRECTIONAL_POLICY_TYPE, a);      PortableServer::POA_var poa = rootpoa->create_POA("bidir", pman, pl);      // Get the reference the server.
    std::string srv_obj_id("corbaloc::10.1.1.2:7788/bidirService");     
      obj = orb->string_to_object(srv_obj_id.c_str());
      cb::Server_var server = cb::Server::_narrow(obj);      // Register a CallBack object in this process.
      cb_i* mycallback = new cb_i();
      PortableServer::ObjectId_var oid = poa->activate_object(mycallback);
      cb::CallBack_var callback = mycallback->_this();
      mycallback->_remove_ref();      /*if( argc == 2 ) 
    do_single(server, callback);
      else            
    do_register(server, callback, atoi(argv[2]),atoi(argv[3]));*/
    do_register(server, callback, 3,1000);    }
 //system("Pause");
    // Clean-up.  This also destroys the call-back object.
    orb->destroy(); -------------------------------------------------------------It still is not working and server is unable to invoke callback method on
the client object. Is there anything I am missing here? Also, can I get an
IIOP to HTTPgateway compatible with omniORB?
-----Result-----------omniORB: throw giopStream::CommFailure from giopStream.cc:1110(0,NO,COMM_FAILURE_MarshalArguments)----------------
Thanks a lot, your help is much appreciated. roger
 
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