[Serusers] Problem with TCP/UDP translation

[Andrei Pelinescu-Onciul]

On Jun 21, 2004 at 21:18, Daniel Mach?n Vazquez-Ill? <dmachin at telefonica.net> wrote:
> Hello
> 
> I have a problem when two clients (one using UDP and one using TCP) connect
> to SER (version 0.8.13-dev-23). My scenario is more or less like this:
> 
> TCP Client <----> SER <----> UDP Client
> 
> There are no NATs or Firewalls in scene.
> 
> I want to reuse the TCP connection of the TCP Client for the whole SIP
> signalling, so I have added the command force_tcp_alias(); to ser.cfg and
> changed tcp_conn.h as advised in
> http://lists.iptel.org/pipermail/serusers/2004-May/008262.html.
> 
> The TCP Client starts the call with an INVITE and everything works
> correctly. However, when the UDP Client tries to send a MESSAGE, SER doesn't
> route the MESSAGE through the TCP connection (it sends it over UDP with the
> TCP port included in TCP Clients Contact!).

> 
> Can anyone tell me what is misconfigured?

A quick guess: the UDP client doesn't copy the proto parameter from the
TCP client Contact: into the request uri.

If this is not the case, please send some packet dumps (tcpdump -w file
 or ngrep).


Andrei