The idea of using ICMP unreachables as a method to shut down RTP
streams (and corresponding signaling sessions) is a good one, and I'd
like to see discussion on it.
There is the rtptimeout option in sip.conf which will possibly solve
some of those symptoms (and has dangerous side-effects, when clients
don't send CNG and are on hold) but of course it is not the same
mechanism and using ICMP unreachables is a better solution.
For those about to suggest it, the SIP session timers don't solve this
problem in many cases, since signaling and RTP go to different places
and ICMP unreachable on RTP doesn't imply that the signaling will also
fail.
JT
On Oct 7, 2009, at 7:05 PM, Dan Mahoney, System Admin wrote:
One of our users recently had a powerfail while connected to our
meetme
gateway. (Asterisk 1.4.17 on debian 4.0)
Through the course of it, asterisk never hung up. His system came
back
up, and started sending ICMP port unreachables, but the stream went
on,
flooding him with silence media stream packets (there was nobody
else in
the conference).
Is asterisk aware of ICMP unreachables? Is there a tunable I can
set to
make it be?
I found a thread here that discusses it briefly:
http://lists.digium.com/pipermail/asterisk-users/2005-March/
086626.html
However, there's no real resolution there.
If it's not aware of it, how difficult would it be to add?
-Dan Mahoney
--
Dan Mahoney
Techie, Sysadmin, WebGeek
Gushi on efnet/undernet IRC
ICQ: 13735144 AIM: LarpGM
Site: http://www.gushi.org
---
---
John Todd email:jt...@digium.com
Digium, Inc. | Asterisk Open Source Community Director
445 Jan Davis Drive NW - Huntsville AL 35806 - USA
direct: +1-256-428-6083 http://www.digium.com/
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