[SR-Users] dispatcher gateway probing in 4.3

[Waite, Hugh]

Hello,
This is something I have been thinking about recently as well.

The current implementation can read flags from the DB (or file etc) but the probing flag is only a status and is cleared/set depending on the probing_mode, so the value stored in the DB is basically ignored after the first probe.
I was going to suggest a new mode, e.g. "probe_if_set" which allows each destination to indicate whether it wishes to probe.
Then you can have a set of entries which are all active but do not probe, another set which probe all the time and another set that only probe when they are inactive. Entries could still be administratively disabled to take them out of service.

Does this sound like what you need Joseph?

Regards,
Hugh

From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla
Sent: 20 August 2015 08:57
To: Kamailio (SER) - Users Mailing List
Subject: Re: [SR-Users] dispatcher gateway probing in 4.3

Hello,

if no combination of probing_mode (http://kamailio.org/docs/modules/stable/modules/dispatcher.html#dispatcher.p.ds_probing_mode) and probing flags (http://kamailio.org/docs/modules/stable/modules/dispatcher.html#idp1992504) is not suitable for what you need, then this use case need to be added.

Cheers,
Daniel
On 19/08/15 23:11, Joseph Dickson wrote:
Greetings..

I'm fairly new to Kamailio, and am having fun so far...  I'm using the latest 4.3 rpm version on Centos 7.

I'm using Kamailio to front end a pair of FreeSwitch SBC boxes in an active/active config..  My plan is to use dispatcher to load balance calls between them.  This is working fine.. the problem that I'm bumping into is that the gateway probing options in dispatcher seem not to fit my use case..

In addition to the two SBC gateways, I also have a few external gateways that I want to load balance between also using dispatcher.  The problem is that I can't send options packets to these gateways -- they don't respond to them.  This means I can't just configure dispatcher to probe all gateways (probing_method=1) because it will mark these gateways as inactive..

It looks like every other configuration of probing_method only probes a gateway until the state is determined, and then it stops probing.  probing_method=2 does not appear to be used at all in the code..

Am I doing this wrong?  Or is this just an area of dispatcher that needs some improvement?  Looking at the code, I can probably add the functionality that I need, but I don't want to go that route if I'm just missing how this is usually done..

Thanks,

--
Joseph Dickson
E: jdickson at evolvetsi.com<mailto:jdickson at evolvetsi.com>





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--

Daniel-Constantin Mierla

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