[SR-Users] TLS capture with sip_trace()

[Daniel-Constantin Mierla]

Hello,

On 13/01/15 00:30, Mikko Lehto wrote:
> Hi
>
> I am getting incorrect source port to Homer web while tracking
> outgoing request from my proxy to remote SIP server.
>
>
> Juha Heinanen <jh at tutpro.com> wrote in another thread:
>
>> in case of tcp (and tls) the source port is always a random one.
>> only the destination port can be predetermined.
> Interface capture (tcpdump) shows exactly what Juha wrote
> i.e. random source port for TLS connection.
>
> I always get local TLS listener address as Homer source_port,
> clearly not true when comparing to output of tcpdump.
> I am calling sip_trace() from branch_route and onsend_route.
>
> Is it even possbile to use siptrace with TLS so that
> it records correct TCP (random) source port to Homer?
>
>
> I tried briefly printing some structure variables in
> siptrace/siptrace.c but it seems that real source port
> is not available in struct dest_info at that context.
>
I guess siptrace is taking the details from sip msg structure at a time
before tcp connect(), which can happen later if async tcp is enabled. It
shows intended local socket for sending.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda