Re: CORBA question

[Dick Porter <dick acm org>]

On Tue, Dec 08, 1998 at 07:36:35AM +1100, Andrew Clausen wrote:
> Philip Dawes wrote:
> 
> > Or you can have a mutually known server pass the references around. This is
> > how the name server works - both the client and the server know the location
> > of the name server (through some magic - this usually requires looking up
> > the server on a well known port, or passing the stringified IOR to the orb
> > on startup) and they use that to publish and look up references to objects.
> 
> Isn't the name server implemented with CORBA interfaces, not sockets?  The
> orbit-name-server doesn't appear to use sockets.  So you need the IOR of the
> name-server.  I assume you have to do that by using popen on orbit-name-server,
> and reading the stdout for the IOR.  This seems a bit messy.

You need to prime the ORB with the location of your name server.

> 
> I noticed CORBA_ORB_resolve_initial_references.  The ORBit/test/test program
> lists all services in this, and the InterfaceRepository is in it.  If a server
> registers itself in the IR, then a client can look it up.  Given an objec
> reference to a "Contained" corresponding to the interface, how can you create
> an instance of the interface, or retrieve an existing one?

Firstly, CORBA_ORB_resolve_initial_references() doesnt use ESP, or crystal
balls - you have to tell it where everything is.

Secondly, the Interface Repository describes interfaces (ie method signatures
etc), it doesnt tell you IOR's of running servants.

> 
> Andrew Clausen

- Dick