[omniORB] LocateRequest against OrbixWeb fails when object really does exis t?

[Mark Elder]

Hello,

I am using OmniOrb 3.03 to connect to OrbixWeb.  This is your black box
setup where I don't have any control over the Orbix end.  By the way can
anyone tell me how to figure out what version of Orbix that I am running
against - the system administrator on the other end does not know - it is
running on a Solaris machine.

Anyway I thought I had things working and something unknown changed that is
causing me huge problems.  The server has a published IOR file that I access
via FTP to get a Connection Factory object.  This object has a single
create_connection method.  When I make the call I get a OBJECT_NOT_EXIST
error.  However, this used to work without any error.  It looks like the
error is actually being thrown by a call to LocateRequest - and I have
stepped into the code and verified this.  Here is the trace that pointed me
in that direction:

   omniORB: scavenger : scanning connections
   omniORB: Activating: root<0>
   omniORB: scavenger : scanning connections
   omniORB: Creating ref to local: root<0>
    target id      : IDL:QCmaApi/Connection:1.0
    most derived id: IDL:QCmaApi/Connection:1.0
   omniORB: createObjRef -- reusing reference from local ref list.
   omniORB: LocateRequest to remote:
key<0x3a5c3139322e3136382e352e32353a2d3838393234313630343a436f6e6e656374696f
6e466163746f72793a3a4946523a51436d614170695f436f6e6e656374696f6e466163746f72
7900>
   omniORB: throw OBJECT_NOT_EXIST from remoteIdentity.cc:231
   omniORB: omniRemoteIdentity deleted.
   omniORB: strand Rope::decrRefCount: old value = 1
   omniORB: ObjRef(IDL:QCmaApi/ConnectionFactory:1.0) -- deleted.
   omniORB: scavenger : scanning connections
   omniORB: strand Rope_iterator: delete unused Rope.


Here is the really strange thing - just to see what would happen I skipped
the line in remoteIdentity that was throwing the error (making it seem like
the server returned GIOP::OBJECT_HERE) and the call succeeded!  Continuing
further the next call to LocateRequest (on the returned object) succeeded
the first time without me having to skip the throw.  I am at a loss as to
what could have changed in my code or on the server to cause this.  I was
running at 8:00 one night and with a server reboot overnight my code was
broke the next morning.

Right now to get back up and testing I have added these two lines:
      factory->_remote_non_existent();
      factory->_noExistentCheck();
I initially tried just the _noExistentCheck call but then OmniOrb seemed to
think that the object was local.  Making both calls seems to work for now.
Naturally I would like to find a better answer than this but I am at a loss
of how/where to proceed.  On the server side I am working with a sys admin
that can get me trace files and restart the service but I don't even know
what to ask for - this is my first CORBA project and OmniOrb is the only Orb
I have used.

Below is the code where I am resolving the IOR and getting my connection.

Thanks in advance!

Mark 

----------------------------------------------------------------------------
---

      if (CORBA::is_nil(g_orb))
      {
         m_cMAError.ThrowComError(-1, "The Orb is NIL.  The Orb should have
been created by StartOperation");
      }

      CORBA::Object_var obj = g_orb->string_to_object(sm_IOR);
      QCmaApi::ConnectionFactory_var factory =
QCmaApi::ConnectionFactory::_narrow(obj);

      if( CORBA::is_nil(factory) )
         m_cMAError.ThrowComError(-1, "Could not get a Connection Factory
Object.");
   
      obj = g_orb->resolve_initial_references("RootPOA");
      PortableServer::POA_var poa = PortableServer::POA::_narrow(obj);
      
      CallbackConnection_i* connection = new
CallbackConnection_i(sm_pWriteMQ);
      
      PortableServer::ObjectId_var myId = poa->activate_object(connection);
      
      connection->_remove_ref();
      PortableServer::POAManager_var pman = poa->the_POAManager();
      pman->activate();

	// Should not be needed but gets around a OBJECT_NOT_EXIST error
      factory->_remote_non_existent();
      factory->_noExistentCheck();

      obj = factory->create_connection(sm_UserName, sm_Password, 
                                       QCmaApi::GUARANTEED_DELIVERY,
connection->_this());     

      m_connection = QCServiceMA::ConnectionValidation::_narrow(obj);

      if( CORBA::is_nil(m_connection) )
         m_cMAError.ThrowComError(-1, "Could not get a Connection Object.");

      m_connection->is_alive();