[OpenSIPS-Users] Failover using dispatcher in opensips 1.11

[Gunjan Korlekar]

Hi Bogdan,

Thanks for the clarification regarding the function! The 'make menuconfig'
definitely helps.

-Gunjan

On Tue, Feb 23, 2016 at 2:28 PM, Bogdan-Andrei Iancu <bogdan at opensips.org>
wrote:

> Hi Gunjan,
>
> the ds_select_dst() will just pick the first to be used and prepares the
> rest of the available destination (this function does not do any SIP
> signaling, it just get the available destinations from the indicated set).
> The function returns false only if there is no available (know to be
> available) destination in the set.
>
> To have a model, please use the "make menuconfig" to generate a
> load-balancer like script using dispatcher - this will give you a hint on
> how dispatcher has to be configured for failover.
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
> On 23.02.2016 09:29, Gunjan Korlekar wrote:
>
> Hello,
>
> I am new to the dispatcher module on opensips 1.11 and was trying to
> understand how failover works in the ds_select_dst function. I tried
> searching for answers online but I could not get much clarity.
>
> So, I have a bunch of destinations in my dispatcher table and the
> following piece of code in my route function in the config file -
>
> if ( !ds_select_dst("1", "4") ) {
>     xlog("L_INFO", "ds_select_dst error");
>     send_reply("500","Unable to route");
>   }
>
> I have ds_probing_mode set in my config file so it always knows what
> destinations are active.
>
> Can you please help in clarifying the following -
>
> Will the ds_select_dst() return a 'False' only after it has tried all the
> destinations in the dispatcher table or just the one that gets selected in
> the round-robin?
>
> If above is not true and the destination selected by ds_select_dst turns
> out to be non reachable, will the above call return False for the
> destination that it picks? In such a case can you guide me as to what I can
> do so that it selects the next available destination in the dispatcher list?
>
> What is the default value of 'max_results' in the ds_select_dst()
> signature and does it affect failover selection?
>
> Thanks in advance!
>
> --
> Thanks,
> Gunjan
>
>
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>
>
>


-- 
Thanks,
Gunjan
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