[Freeswitch-users] SIP dialogue mismatch when pinging FS with SIPp UA

Anthony Minessale anthony.minessale at gmail.com
Fri Jul 26 00:40:52 MSD 2013


Gonna guess the branch in via or the CSeq needs to be updated because its
still 1 in the ACK



On Thu, Jul 25, 2013 at 3:20 PM, Victor Chukalovskiy <
victor.chukalovskiy at gmail.com> wrote:

> Hello,
>
> Freeswitch for some reason ignores UA's ACK and keeps re-transmitting 483
> response (as per attached example). I suspect dialogue mismatch, but don't
> see anything abnormal in the ACK. From: To: and Call-ID: all match!
>
> Could someone with good eyes help find what makes FS unhappy about the
> ACK? Enabling debug output did not not reveal anything (FS does not print
> any debug output when receiving the ACK).
>
> SIP call flow:
> UA     --INVITE-->         FS
> UA     <--100 Trying --   FS
> UA     <--483--             FS
> UA     --ACK-->             FS
> And here is what I don't like:
> UA     <--483--             FS
> UA     <--483--             FS
> UA     <--483--             FS
> ....
>
>
> UA is my SIPp that's set to ping FS with INVITE and expects 483 in
> response (or any rejection that I like). This is needed to monitor call
> processing (FS uses mod_lcr to return error channel like 483, so this will
> allow me to ping mod_sofia as well as mod_lcr).
>
> Any help is appreciated.
>
> Thank you,
> Victor
>
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> 
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-- 
Anthony Minessale II

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