[omniORB] Simultaneous use of 2 different implementations

[Martin Trappel]

EntonH wrote:
> Hi there,
> 
> i programmed a Corba application which uses 2 different Corba
> implementations at the same time.
> 
> The 1st Corba interface:
> strcpy(initStr[1], "-ORBInitRef");
> 		strcpy(initStr[2], "NameService=corbaloc::localhost:2809/NameService");
> 		orb = CORBA::ORB_init(cnt, initStr);
>         // init POA
>         poa_obj = orb->resolve_initial_references("RootPOA");
>         poa = PortableServer::POA::_narrow(poa_obj);
>         manager1 = poa->the_POAManager();
> 	    // create service
> 		try {
> 			ns_obj = orb->resolve_initial_references("NameService");
>             if (!CORBA::is_nil(ns_obj)) {
>                 nc = CosNaming::NamingContext::_narrow(ns_obj);
>                 CosNaming::Name name;
>                 name.length(1);
>                 name[0].id = CORBA::string_dup("TestServer");
>                 name[0].kind = CORBA::string_dup("");
>             // run
> 	manager1->activate();
> 
> The client for this interface looks like this:
> # String 
>     string1 = 'NameService=corbaloc::'
>     string2 = ':2809/NameService'
>     EndString = string1 + sHostIP + string2 
>     
>     # Initialize the ORB
>     orb = CORBA.ORB_init (['-ORBInitRef', EndString], CORBA.ORB_ID)
>     obj = orb.resolve_initial_references("NameService")
>     rootContext = obj._narrow(CosNaming.NamingContext)
> 
>     if rootContext is None:
>         raise IOError('Failed to narrow the root naming context!')
> 
>     # Resolve the name TestServer
>     name = [CosNaming.NameComponent("TestServer", "")]
>     obj = rootContext.resolve(name)
>     
>     dlClient  = obj._narrow(Interface.Comm)
> 
>     But if I want to call a function of dlClient (dlClient.execFunc(x)) I
> get a TRANSIENT exception.
> 
> The 2nd Corba application looks like this:
>     Simultaneously I use the following Corba interface:
>     con = 'corbaloc::' + sLocalhost + '/' + sType
>     orb = CORBA.ORB_init(['', con], CORBA.ORB_ID)
> 
>     # get root poa and its manager; activate the manager
>     poa = orb.resolve_initial_references("RootPOA")
>     poaManager = poa._get_the_POAManager()
>     poaManager.activate()
> 
>     ior = con
>     # Convert the IOR to an object reference
>     obj = orb.string_to_object(ior)
> 
>     # Narrow reference
>     ta  = obj._narrow(TAInterface.tai)
> 
>     # initialize and start the model
>     if ta.init():
> 
> I got the TRANSIENT Exception at first (occuring during processing the first
> Client implementation)...
> 
> I tried modifying the system settings.
> Then I got a NotFound exception (command: return _omnipy.invoke(self,
> "resolve", _0_CosNaming.NamingContext._d_resolve, args))
> 
> I tried to take my modifyings back and now I retrieve an INITILIZE exception
> (exception-traceback: File ".\omniORB\CORBA.py", line 459, in __init__).
> And...after another try...i retrieve a NO_RESOURCES exception (command:
> return _omnipy.orb_func.resolve_initial_references(self, identifier))
> 
> How can this be, when all modifications have been removed?
> Do you know how I can fix this problem?
> 

Does the C++ Server register itself correctly with the name server?
Is it running when the first client connects?

Have you tried leaving the -ORBInitRef stuff out and setting the 
NameService in the configfile/registry ?

On my Windows omniORB412 I normally get a trace message to stdout/stderr 
when I recieve INITIALIZE from ORB_init ...

br,
Martin