[Users] Openser 1.1 and Dispatacher Failover

[Douglas Garstang]

Thanks Carsten. With your help, I think I got it working.
One final thing is that I'd like to log what's happening. What pseudo variable could I use in failure_route to show what destination I was trying?

Doug.

> -----Original Message-----
> From: Douglas Garstang 
> Sent: Tuesday, June 06, 2006 10:09 AM
> To: Carsten Bock
> Cc: Users at openser.org
> Subject: RE: [Users] Openser 1.1 and Dispatacher Failover
> 
> 
> Thanks Carsten.
> 
> What does ds_next_domain() do? Is failure_route[1] supposed 
> to be calling itself? Why don't you call ds_next_dst() instead? 
> 
> Douglas.
> 
> > -----Original Message-----
> > From: Carsten Bock [mailto:openser-list at qbiz.de]
> > Sent: Tuesday, June 06, 2006 9:47 AM
> > To: Douglas Garstang
> > Cc: Users at openser.org
> > Subject: Re: [Users] Openser 1.1 and Dispatacher Failover
> > 
> > 
> > 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 at qbiz.de]
> > >> Sent: Tuesday, June 06, 2006 9:34 AM
> > >> To: Douglas Garstang
> > >> Cc: Users at 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.
> > >>>
> > >>> _______________________________________________
> > >>> Users mailing list
> > >>> Users at openser.org
> > >>> http://openser.org/cgi-bin/mailman/listinfo/users
> > >>>
> > >>>   
> > >>>       
> > >>     
> > >
> > >   
> > 
> > 
> 
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