Hi Rob.
Yes, you guessed it correct. It is over TCP; and Call-id gets changed
by server.
Another point to add:
Messages are being sent back to the port defined in Recipient Contact
header when both Sipp & server are run from same host.
However, eventually the plan is to deploy server remotely and have it
tested for performance.
Thanks
Synvi
On Thursday, January 23, 2014 at 1:57 PM, "Rob Day" wrote:Hi,
I think this is probably due to the use of TCP - because TCP is a
connection-oriented protocol, it's common to simply send messages back
over the TCP connection the REGISTER came in on, rather than
constructing a new connection based on the Contact header.
I take it that you need to use TCP rather than UDP, that you need to
register your clients before receiving calls, and that there's no way
to stop the server changing the Call-ID?
Rob
On 23 January 2014 21:03, wrote:
> I’m facing an issue, probably related to how ports & sockets gets
used by
> SIPp
>
> sipp -sf SND : -t tn -p 45001
> sipp -oocsf REC : -t tn -p 45002
>
> Scenario: SND running on port 45001
> Sender registering on a specific port (per say 45001)
> Receiver registering on a different port [per say 45002 –
hardcoding this
> port value in ]
> Send a message from sender to receiver
>
> Scenario: REC running on port 45002
> Accept incoming messages (out-of-call) and respond 200 back to
complete
> flow.
> ** I had to use –oocsf because the call-id is changed by the
server.
>
> Server is delivering message to recipient, but on a different port
other
> than expected 45002.
> So REC isn’t able to receive the message.
>
> Are there any options to overcome this specific issue.
> Your help is appreciated.
>
> Thanks
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