[SR-Users] SIP-over-Websocket Load Balancing

[Alexandru Covalschi]

> sorry, i thought you use registrar/usrloc modules
Well, I do use them - so if you could explain in which table does Kamailio
write the user's proto and which flags I can use - I'll make a test to see
which scheme is preferable :)

So, about script:

1.) Write to redis
Please read http://kamailio.org/docs/modules/4.3.x/modules/ndb_redis.html
this guide to understand how to connect redis to Kamailio
It route[AUTH] you shall add write to redis command:

	if (is_method("REGISTER") || from_uri==myself)
	{
		# authenticate requests

                redis_cmd("protobase", "SET $fU $proto bar", "r"); #
Here is the redis

 if (!auth_check("$fd", "subscriber", "1")) {
auth_challenge("$fd", "0");
exit;
}
# user authenticated - remove auth header
if(!is_method("REGISTER|PUBLISH"))
consume_credentials();
}

You can find information about pseudo-variables on this
http://www.kamailio.org/wiki/cookbooks/4.0.x/pseudovariables page

2. Rtpengine algorithm
First of all, look through https://github.com/sipwise/rtpengine and
http://kamailio.org/docs/modules/4.3.x/modules/rtpengine.html to understand
what's the difference between rtpengine and rtpproxy
In your NATMANAGE route change rtpproxy_manage(); or rtpengine_manage();
string to this:

    if(ds_is_from_list())
    {
        xlog("L_NOTICE","====== selecting $tU proto\n");
        redis_cmd("protobase", "GET $tU", "uproto");
             xlog("L_NOTICE","===== $tU has proto $redis(uproto=>value)\n");
        if ($redis(uproto=>value)=="ws")
        {
             xlog("L_NOTICE","===== $tU is a websocket user\n");
        rtpengine_manage("direction=internal direction=external force
trust-address replace-origin replace-session-connection ICE=force
RTP/SAVPF");
        }
        else
        {
        xlog("L_NOTICE","===== $tU is classy user\n");
        rtpengine_manage("direction=internal direction=external force
trust-address replace-origin replace-session-connection");
        }
    } else {
        xlog("L_NOTICE","====== $fU proto is $proto ");
              if ($proto=="ws")
        {
            xlog("L_NOTICE","===== $fU is websocket user\n");
            rtpengine_manage("direction=external direction=internal force
trust-address replace-origin replace-session-connection ICE=force RTP/AVP");
        }
        else
        {
            xlog("L_NOTICE","===== $fU is a classy user");
            rtpengine_manage("direction=external direction=internal
replace-origin replace-session-connection force trust-address RTP/AVP");
        }

    }


2015-06-14 22:24 GMT+03:00 Juha Heinanen <jh at tutpro.com>:

> Alexandru Covalschi writes:
>
> > > you don't need a database for that.  you can use location table flags
> > Can you please describe how to do that? I chosen redis because I need to
> > figure out the proto of the leg_b (called) user pretty fast - mysql is
> much
> > slower.
>
> sorry, i thought you use registrar/usrloc modules.
>
> -- juha
>
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>



-- 
Alexandru Covalschi
ABRISS-Solutions
VoIP engineer and system administrator
phone: +37367398493
web: http://abs-telecom.com/
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