Hello all,
I'm struggling to get sipp send out the response packets to the right UDP port.
I'm using a pretty recent SIPp dated 20080723. SIPp is listening for register
requests on port 5060 (-t u1 -p 5060) and answers them with a "200 OK".
The register request messages arrive from a fixed source address (S-IP), with a
variable UDP source port and have internally a Via:-header specifying
S-IP:5060, so the responses are expected there, and not an the variable source
port number.
Not specifying anything special on the command line, responses go from
SIPp:5060 to S-IP:source-port, instead of the address mentioned in the Via:.
I've seen somewhere a mention that it can follow the via, but didn't find
anything on that in documentation of source, so I think it is not in. Anybody
know more of this?
As in my case the destination is the fixed S-IP:5060, I tried specifying this
with the '-rsa' remote sending address option. Using this option has a clear
effect on the behaviour: SIPp now sends the message from
SIPp:variable-high-port to S-IP:source-port instead of using 5060 as source
port. This seems very strange to me, the SIPp source port gets variable, but
the specified sending address:port is not used, also not when giving another IP
address as rsa-destination. So, using the rsa-option has an effect, but not
really the expected one.
Anybody knowing how to solve this problem with SIPp?
Best regards,
MarcVD
(-: from Marc VAN DIEST (BELGACOM) ;-)
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