2010/11/29 marius zbihlei <marius.zbihlei(a)1and1.ro>ro>:
Kamailio does not use ICMP replies to check if a host
is reachable on a UDP
sendto(). This means that ICMP port unreachable errors are not handled by K
and so the same host is retried on TM retransmits.
AFAIR using raw sockets checking ICMP notifications would be possible
(not yet implemented, but possible as I remember from a thread with
Andrei).
IMHO this would be very useful because if a UDP port is unreachable
and there is a ICMP notification about it, the proxy should generate
an internal 503 (transport error) rather than a 408 (fr_timer
timeout).
--
Iñaki Baz Castillo
<ibc(a)aliax.net>