[OpenSIPS-Users] Text Message Duplication

[Nick Altmann]

Bogdan,

in some cases, if other side answer slowly, when opensips authenticate
MESSAGE, client generates retransmits.
If in opensips modparam("auth", "disable_nonce_check", 1) (default),
we receive such dialog:

CLIENT      OPENSIPS
>> MESSAGE
<< 401 with first nonce
>> MESSAGE

long timeout, server after opensips doesn't answer…

>> MESSAGE (retransmit with first nonce)
<< 401 with second (another!!!) nonce
>> MESSAGE with another CALLID, because second authentication

long timeout, server after opensips doesn't answer…

>> MESSAGE (retransmit with second nonce)
<< 401 with third (another!!!) nonce
>> MESSAGE with another CALLID, because third authentication

<< 200 OK

Server after opensips receives 3 MESSAGE packets with another CSEQ and
another CALLID.

I solved this situation with disabling disposable nonces:
modparam("auth", "nonce_expire", 120)
modparam("auth", "disable_nonce_check", 1)

--
Nick

2012/6/20 Bogdan-Andrei Iancu <bogdan at opensips.org>:
> Hi Arjun,
>
> A simple explanation is that your UAC might be registered twice with
> opensips (has 2 records in usrloc) -> check with "opensipsctl ul show".
>
> If so, opensips will do parallel forking (for the received requests) to all
> registered contacts.
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
> http://www.opensips-solutions.com
>
>
> On 06/19/2012 01:24 PM, Arjun Shankar K S wrote:
>
> Hi All,
>
> Greeting to everyone!!!
>
> I have installed opensips 1.7.1 with RTP Proxy. I am facing the following
> issue, When I send a Text Message to any UAC, I receive 2 Messages instead
> of one at the receiver UAC. I have tried with different SIP Clients but the
> problem persists.
>
> I am newbie to opensips!! Any advice is sincerely appreciated.
>
> Thanks,
> Arjun
>
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