6 Jun
2006
6 Jun
'06
5:47 p.m.
Hi Douglas,
It's quite simple. Here an except from a possible Main-Route:
[...]
# Choose a Proxy (Round-Robin, PSTN-Gateways)
ds_select_domain("2", "4");
# On Failure: Choose next Proxy
t_on_failure("1");
# Relay to the Proxy
if (!t_relay()) {
sl_reply_error();
}
[...]
And here the corresponding failure-route:
failure_route[1] {
# Choose another gateway
if (t_check_status("408")) {
if (ds_next_domain()) {
# On Failure: Choose next Proxy
t_on_failure("1");
# Relay to Proxy
t_relay();
} else {
t_reply("503", "Service not available");
return;
}
}
}
And here the modparam for the dispatcher:
# Dispatcher: Enable Failover-Support
modparam("dispatcher", "flags", 2)
That's it.
Carsten
Douglas Garstang schrieb:
Carston.
Thanks for the info. Unfortunately, none of this stuff is documented. I really don't
have a clue how to implement any of this.
Douglas.
-----Original Message-----
From: Carsten Bock [mailto:openser-list@qbiz.de]
Sent: Tuesday, June 06, 2006 9:34 AM
To: Douglas Garstang
Cc: Users(a)openser.org
Subject: Re: [Users] Openser 1.1 and Dispatacher Failover
Hi Douglas,
Yes you're right, it does. You just cannot do a simple (stateless)
forward for failover, you need to establish a transaction (e. g.
t_relay()) and you need a failure-route handling the error
(if there is
any error). And don't forget the flags of the dispatcher
(Flag 2 needs
to be enabled).
Carsten
Douglas Garstang schrieb:
I was under the impression that the dispatcher
module in
Openser 1.1 did failover?
I just tried it. I put an invalid IP in my
dispatcher.list
file. When the dispatcher selects that invalid IP, it looks
like it never times out and tries another.
# PSTN
2 sip:216.187.140.217 # INVALID
2 sip:216.187.141.246
2 sip:216.187.140.216
What special steps do I need to take to ensure the
dispatcher does failover?
Here's a piece of my openser.cfg file...
#
# Outgoing PSTN Calls - Dispatch to Audiocodes
#
if ( src_ip == 216.187.142.203 ||
src_ip == 216.187.142.204 ||
src_ip == 216.187.142.232 ||
src_ip == 216.187.142.201 ||
src_ip == 216.187.142.231 ) {
sl_send_reply("100","Trying");
xlog ("L_INFO","Outbound PSTN call. Dispatching
to Audiocodes");
ds_select_dst("2","0");
forward();
return;
}
Doug.
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