[omniORB] Troubleshooting a server that is becoming inaccessible during the night.

[Michael L Bendickson]

The port is dynamic.  I'm letting the ORB pick it.

There should not be another instance of my server.  There is another
non-omniORB TCP server on the system, that is VERY busy.  Could that server
be grabbing the port, or would this only occur with another instance of my
server?

I wrote a small TCP server with a fixed port on my NT box with winsock, and
tried to start it twice.  bind() fails as I would hope.  Are there situations
in NT where this would succeed?

I'll check the state and state-reason of the threads the next time this
happens.

Thanks,
-Mike


> Do you select a fixed port number for the server? If so, could there be
> another instance of the server started using the same port number? On unix,
> the other server instance will just fail to grab the port. On NT, I think
> the OS just let the new server instance to grab the port and needless to
> say this cause great pain to track down the problem.
> 
> Next time when it happens, could you look at the state of each thread in
> the process? It is important to know what the rendezvous thread is doing.
> I don't think the thread has gone away, or you would have seen a message in
> stderr as you have already turned up the trace level.
> 
> Sai-Lai
> 
> >>>>> Mike Bendickson writes:
> 
> > Ok, it happened again today.  I am not able to connect to that port using
> > telnet when this happens.  I was able to connect with telnet ealier and saw
> > a "GIOP" message before getting kicked off.
> 
> > So, something has trashed the socket then, or the thread is not sitting on
> > accept?
> 
> > Is there something else I should look for?  Has anyone else experienced this
> > with 2.8.0 on NT?
> 
> 
> -- 
> Sai-Lai Lo                                   S.Lo@uk.research.att.com
> AT&T Laboratories Cambridge           WWW:   http://www.uk.research.att.com 
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