[Users] more TCP problems

Erich Nahum nahum at watson.ibm.com
Wed Aug 3 01:04:46 CEST 2005

On Wed, Aug 03, 2005 at 12:17:40AM +0200, Klaus Darilion wrote:
> Erich Nahum wrote:
> >Thanks to Bogdan, who pointed out that my UAC was not behaving properly.
> >Having solved that problem in sipp, I now have a new issue.  The UAC
> >is opening a TCP connection to the proxy, but the proxy then forwards
> >the INVITE to the UAS over UDP.  I'm using the stock openser.cfg file.
> >Any suggestions?
> If a user agents wants to receive messages via TCP, it has to REGISTER 
> with with a contact which includes the transport=tcp parameter. If there 
> is no transport parameter, UDP is the default (according to the RFCs).
> You can force TCP by using t_relay_to_tcp instead of t_relay.

Thanks for the response.  I did try this, and got a parser error
that t_relay_to_tcp is unrecognized.

Erich M. Nahum                  IBM T.J. Watson Research Center
Research Staff Member           P.O. Box 704
nahum at watson.ibm.com            Yorktown Heights NY 10598

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