[OpenSIPS-Devel] [OpenSIPS-Users] fr_inv_timer: description in the documentation is misleading

[Bogdan-Andrei Iancu]

Hi Andrew,


Andrew Pogrebennyk wrote:
> Hi,
>
>  From http://www.opensips.org/html/docs/modules/1.5.x/tm.html#id228479:
>
> fr_inv_timer (integer)
>
> Timer which hits if no final reply for an INVITE arrives after a 
> provisional message was received (in seconds). This timer is started 
> after the first provisional response. 
yes, the fr_inv_timer starts after receiving a provisional reply.
> Thus, fast failover (no 100 trying 
> from gateway) can be achieved by setting fr_timer to low values.
fr_timer is between the request being sent out and the first reply being 
received. After receiving the first provisional reply, the fr_inv_timer 
takes over the fr_timer.

Note there are 2 timers : fr_timer and fr_inv_timer !

Regards,
Bogdan

>  See 
> example below
>
> Isn't there a contradiction between 2nd and 3rd sentences? If the timer 
> is really started after the first provisional response (e.g. 100), it 
> can't affect the time we wait for the receipt of 100 from the gateway. 
> Of course source code will clarify this for me, but I just want to point 
> out this mismatch. Thanks!
>
>