[OpenSIPS-Users] Text Message Duplication

[Nick Altmann]

Thank you, Bogdan.
I'll try second way. 100 Trying helps not for all UACs.

--
Nick

2012/6/20 Bogdan-Andrei Iancu <bogdan at opensips.org>:
> Hi Nick,
>
> Usually this happens for INVITEs, not for REGISTER, when you have a local
> processing (in opensips) that may take too long before sending a reply back.
>
> You can deal with this (without disabling the nonce_check in 2 ways:
>    1) send a statless 100 reply asap in script, to prevent retransmissions
>    2) go statefull, so that you can detect retransmissions in script and
> absorb them - add t_newtran() before the auth part.
>
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
> http://www.opensips-solutions.com
>
>
> On 06/20/2012 09:35 AM, Nick Altmann wrote:
>>
>> 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
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users