[omniORB] C++ client to Java server

[Eric Callier]

try on C++ side

 -ORBverifyObjectExistsAndType 0

Eric CALLIER



                                                                                                                                  
                    Andrew Parkin                                                                                                 
                    <AndrewP@eigroup.com>               To:     omniorb-list@uk.research.att.com                                  
                    Sent by:                            cc:                                                                       
                    owner-omniorb-list@uk.resear        Subject:     [omniORB] C++ client to Java server                          
                    ch.att.com                                                                                                    
                                                                                                                                  
                                                                                                                                  
                    19/02/2001 09:17                                                                                              
                                                                                                                                  
                                                                                                                                  



Hi all,

I wonder whether anyone can help - I have written a Corba server in Java
that uses the Naming Service on port 1050 to expose the SMSRef object (code
below).  This is running on the Java 2 ORB supplied with JDK1.2.2.

I am trying to connect to this using a C++ client and OmniOrb but cannot
seem to get it to work.  If both programs are on the same machine I can
make
a connection by cutting and pasting the stringified reference (instead of
using the Naming Service) and everything works fine, but if the two clients
are on separate machines I cannot get the C++ client to locate the Java
server.  I have tried numerous examples I have found but without any
success.  If anyone can throw any light on this I would really appreciate
it!  Thanks.

Andrew Parkin



Java server code follows:


Properties props = new Properties();
props.put("org.omg.CORBA.ORBInitialPort", "1050");
ORB orb = ORB.init(args, props);

SMSCorba SMSRef = new SMSCorba();
orb.connect(SMSRef);

NamingContext ctx =
NamingContextHelper.narrow(orb.resolve_initial_references("NameService"));
NamingContext objref = ctx;

NameComponent nc1 = new NameComponent("SMSCorba", "text");
NameComponent[] name1 = {nc1};
ctx.rebind(name1, SMSRef);





C++ client code follows:


CosNaming::NamingContext_var rootContext;

CORBA::ORB_var orb = CORBA::ORB_init(argc, argv, "omniORB3");

try
{
     // Obtain a reference to the root context of the Name service:
     CORBA::Object_var obj;
     // obj =
orb->resolve_initial_references
("corbaloc:iiop:remoteServer:1050#NameService
"); // this doesn't work either
     obj =
orb->resolve_initial_references("corbaname::remoteServer:1050");

     // Narrow the reference returned.
     rootContext = CosNaming::NamingContext::_narrow(obj);
     if( CORBA::is_nil(rootContext))
     {
          cerr << "Failed to narrow the root naming context." << endl;
     }
}
catch(CORBA::ORB::InvalidName& ex)
{
     // This should not happen!
     cerr << "Service required is invalid [does not exist]." << endl;
}

// Create a name object, containing the name test/context:
CosNaming::Name name;
name.length(1);
name[0].id   = (const char*) "SMSCorba";
name[0].kind = (const char*) "text";

try
{
     // Resolve the name to an object reference.
     rootContext->resolve(name);
}
catch(CosNaming::NamingContext::NotFound& ex)
{
     // This exception is thrown if any of the components of the
     // path [contexts or the object] aren't found:
     cerr << "Context not found." << endl;
}
catch(CORBA::COMM_FAILURE& ex)
{
     cerr << "Caught system exception COMM_FAILURE -- unable to contact
the "
          << "naming service." << endl;
}
catch(CORBA::SystemException&)
{
     cerr << "Caught a CORBA::SystemException while using the naming
service." << endl;
}