[sr-dev] executing tm:branch-failure event_route also when t_relay() fails?
Juha Heinanen
jh at tutpro.com
Tue May 14 07:20:28 CEST 2013
Hugh Waite writes:
> I can't remember if branches using TCP that fail to establish a
> connection generate a 408 Timeout response or not (eventually).
no, i get this immediately when t_relay() fails to dead tcp destination:
SIP/2.0 477 Unfortunately error on sending to next hop occurred (477/TM).
> If an immediate error is detected, like a TCP connection failure,
> perhaps a different 'fake' reply, similar to timeout could be generated
> and sent through the reply handling code for that UAC. This would
> trigger the branch_failure route and also the failure route when all
> replies are received, allowing faster response handling instead of
> timeouts.
yes, if tm:branch-failure cannot be activated directly from tm
[t_fwd.c:1520] then perhaps a fake reply can be generated from there.
that, however, goes beyond my knowledge of tm module.
-- juha
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