[Users] Openser 1.1 and Dispatacher Failover

[Carsten Bock]

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
>>>
>>>   
>>>       
>>     
>
>