[OpenSIPS-Users] Problem with load balancer module

[Bogdan-Andrei Iancu]

Hi Diego,

Could you post a SIP capture of a complete call (starting with INVITE) 
from the opensips LB machine ?

Regards,
Bogdan

Diego Barberio wrote:
> Diego Sebastián Barberio
>
> www.redmondsoftware.com
> +54 11 48153511 (Ext 143)
>
>
> -----Original Message-----
> From: Diego Barberio [mailto:diego.barberio at redmondsoftware.com] 
> Sent: jueves, 06 de enero de 2011 03:50 p.m.
> To: 'users at lists.opensips.org'
> Subject: Problem with load balancer module
>
> Hello,
>
> I’m testing the Load Balancing module and I have a problem I can’t fix by
> myself. The INVITE message is routed correctly to one of the destinations.
> However the subsequent ACK and the BYE messages are not sent to the
> destinations.
>
> I set up opensips to run only in the udp 5060 port. Then I have two
> identical applications: one running on port 5061 and the other on port 5062,
> the 3 components are running in the same server which has a single IP
> address: 192.168.1.195.
> The application is very simple:
> 	1. Receives the INVITE, starts streaming the RTP, and sends the OK
> 	2. When the ACK is received injects some music in the streaming
> 	3. Waits until de BYE is received. Then stops the streaming and
> sends the OK.
>
> This is the configuration of the load_balancer table:
>
> mysql> select * from load_balancer;
> +----+----------+------------------------+-----------+------------+---------
> ----+
> | id | group_id | dst_uri                | resources | probe_mode |
> description |
> +----+----------+------------------------+-----------+------------+---------
> ----+
> |  1 |        0 | sip:192.168.1.195:5061 | pstn=1    |          0 |
> |
> |  2 |        0 | sip:192.168.1.195:5062 | pstn=1    |          0 |
> |
> +----+----------+------------------------+-----------+------------+---------
> ----+
> I've configured only one resource in each application because I'm just
> testing.
>
> Finally, this is the configuration script, which is the one from the
> tutorial on the website:
>
> debug=3
> log_facility=LOG_LOCAL6
>
> fork=yes
> children=4
>
> /* uncomment the following lines to enable debugging */
> debug=6
> fork=no
> #log_stderror=yes
>
> /* uncomment the next line to disable TCP (default on) */
> disable_tcp=yes
>
> port=5060
>
> /* uncomment and configure the following line if you want opensips to 
>    bind on a specific interface/port/proto (default bind on all available)
> */
> listen=udp:192.168.1.195:5060
>
> ####### Modules Section ########
>
> #set module path
> mpath="/usr/local/lib/opensips/modules/"
>
> loadmodule "maxfwd.so"
> loadmodule "sl.so"
> loadmodule "db_mysql.so"
> loadmodule "tm.so"
> loadmodule "uri.so"
> loadmodule "rr.so"
> loadmodule "dialog.so"
> loadmodule "mi_fifo.so"
> loadmodule "signaling.so"
> loadmodule "textops.so"
> loadmodule "load_balancer.so"
>
> # ----------------- setting module-specific parameters ---------------
> # ----- mi_fifo params -----
> modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
>
>
> # ----- rr params -----
> # add value to ;lr param to cope with most of the UAs
> #modparam("rr", "enable_full_lr", 1)
> # do not append from tag to the RR (no need for this script)
> #modparam("rr", "append_fromtag", 0)
> modparam("rr","enable_double_rr",1)
> modparam("rr","append_fromtag",1)
>
>
> # ----- uri params -----
> modparam("uri", "use_uri_table", 0)
>
> modparam("dialog", "dlg_flag", 13)
> modparam("dialog", "db_mode", 1)
> modparam("dialog", "db_url", "mysql://root:Viamonte1621@localhost/opensips")
>
>
> modparam("load_balancer",
> "db_url","mysql://root:Viamonte1621@localhost/opensips")
>
> ####### Routing Logic ########
>
>
> # main request routing logic
> route{
> 	if (!mf_process_maxfwd_header("3")) {
> 		sl_send_reply("483","looping");
> 		exit;
> 	}
>
>
> 	if (!has_totag()) {
> 		xlog("[Redmond] Hast'n to tag\n");
>                 # initial request
> 		record_route();
> 	} else {
> 		# sequential request -> obey Route indication
> 		xlog("[Redmond] Has to tag\n");
> 		loose_route();
>                 t_relay();
>                 exit;
>         }
>
>         # handle cancel and re-transmissions
> 	if ( is_method("CANCEL") ) {
> 		if ( t_check_trans() )
> 			t_relay();
> 		exit;
> 	}
>
>
>         # from now on we have only the initial requests
>         if (!is_method("INVITE")) {
> 		xlog("[Redmond] Not invite\n");
> 		if ( t_check_trans() )
> 			t_relay();
> 		exit;
>                 #send_reply("405","Method Not Allowed");
>                 #exit;
>         }
>
> 	load_balance("0","pstn");
>
>         # LB function returns negative if no suitable destination (for
> requested resources) is found,
>         # or if all destinations are full
>         if ($retcode<0) {
> 		xlog("[Redmond] Service full\n");
> 		sl_send_reply("500","Service full");
> 		exit;
>         }
>
> 	xlog("[Redmond] Selected destination is: $du\n");
>
>         # send it out
> 	if (!t_relay()) {
> 		sl_reply_error();
> 	}
> }
>
>
>
>
>
> It seems that the route is not saved, because the To tag is sent in the ACK
> and BYE messages, also the logs I've added are written as expected for each
> message. If necesarry I can send a new email with the log attached.
> Please, can you help me to find what's wrong?
>
> Thanks
> Diego
>
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
>   


-- 
Bogdan-Andrei Iancu
OpenSIPS Event - expo, conf, social, bootcamp
2 - 4 February 2011, ITExpo, Miami,  USA
www.voice-system.ro