[Freeswitch-users] FS Choking on a 200 Response w/ a Duplicate "From" Header

[Ken Rice]

Is 2 From headers even technically allow?


On 6/5/13 2:03 PM, "JP" <jaykris at gmail.com> wrote:

> I thought I would bounce this off the mailing list before filing a Jira
> ticket.
> 
> I'm facing an issue where FS doesn't acknowledge a 200 OK response with a
> duplicate "From" header:
> 
> recv 422 bytes from udp/[10.191.210.149]:5060 at 17:21:22.634270:
>    ------------------------------------------------------------------------
>    SIP/2.0 200 OK
>    Via: SIP/2.0/UDP 10.191.210.147:5080;rport;branch=z9hG4bKNv1g56Djj6BKj
>    From: "" <sip:0000000000 at 10.191.210.147
> <mailto:sip%3A0000000000 at 10.191.210.147> >;tag=By8FpSr2m6NvF
>    From: "" <sip:0000000000 at 10.191.210.147
> <mailto:sip%3A0000000000 at 10.191.210.147> >;tag=By8FpSr2m6NvF
>    To: <sip:1000 at 10.191.210.149:5060 <http://sip:1000@10.191.210.149:5060>
> >;tag=1
>    Call-ID: 1efaef87-48a7-1231-d08a-000c29ccde0a
>    CSeq: 44890363 INVITE
>    Contact: <sip:10.191.210.149:5060;transport=UDP>
>    Content-Type: application/sdp
>    Content-Length: 0
> 
> Although I've not yet stepped through the code, it is my suspicion that the
> Sofia SIP stack is not accepting the response.  Aside from the
> re-transmissions of the response that I'm seeing in the logs, there are no
> other error, info, or trace statements coming from any other FS module.  RFC
> 3261 seems a bit vague in my opinion as to whether or not this is even
> allowed.
> 
> As a side note, this issue came up while doing integration testing with
> OpenSER 1.3.4.  OpenSER seems to stick in the duplicate From header whenever
> it does a serial proxy to multiple carriers and the first carrier leg times
> out.  I'm wondering if anyone on the mailing list was familiar with this issue
> and perhaps knew of some fix/workaround on the FreeSWITCh end.
> 
> Thanks,
> 
> JP
> 
> 
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> 
> 
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-- 
Ken
http://www.FreeSWITCH.org
http://www.ClueCon.com
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