[OpenSIPS-Users] how do I check destination user is offline

[Vlad Paiu]

Hello,

If the destination is TCP, then you can detect the failure to relay in 
your OpenSIPS script. See the flags that t_relay() takes at 
www.opensips.org/html/docs/modules/1.11.x/tm#id294528

if (!t_relay("0x02")) {
     # failure to relay , treat error here
}

Make sure to also set low tcp_send_timeout and tcp_connect_timeout 
values , in order to detect the failures faster ( 
http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc92 )

Best Regards,

Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com

On 14.04.2015 15:02, chow wrote:
> Hi ALL:
>         User A  sent register to opensips. then User A client core-dump,  so
> User A will  never sent unregister message to opensips.
>         in this case , how do I  Immediately know User A unreachable .
> registered function can not know this,
> by the way,  transport protocol is TCP.
>          thanks a lot.
>
>
>
> --
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>
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