[SR-Users] detect failed socket

[Daniel-Constantin Mierla]

Hello,


On 01/09/16 17:57, Péter Barabás wrote:
> Thanks, but the problem, that there are situations when the socket seems not to be closed but the communication with the client cannot be possible. E.g. if the client is in airplane mode, Kamailio does not detect tcp lost, in the location table, the user exists with real connection_id, but I cannot call him or 
> write a message.
>
> I would be interested in if it is possible to detect such situations on Kamailio side when for example a message cannot be delivered because of such network conditions like airplane mode?
You can use failure_route blocks to get a callback in the kamailio.cfg
when a sip request is not forwarded successfully -- there you can take
decisions like re-routining the request or close the tcp connection.

Cheers,
Daniel

>
> Peter
>
> -----Original Message-----
> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Camille Oudot
> Sent: Monday, August 29, 2016 6:13 PM
> To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] detect failed socket
>
>> Is it possible to check the socket towards the receiver user at the 
>> moment when the message arrives at Kamailio? I think if I would check 
>> that if the socket is not fine, I could send the message to the msilo 
>> directly and the client would not have wait for timeout to resend.
> Hi,
>
> one solution would be to use the handle_lost_tcp parameter from usrloc so that the record will be removed from it if the connection is closed:
>
> http://kamailio.org/docs/modules/stable/modules/usrloc.html#usrloc.p.handle_lost_tcp
>
> --
> Camille
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com - http://www.kamailio.org
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