[OpenSIPS-Users] dispatcher module + load balancing + round robin

[Bogdan-Andrei Iancu]

Hi David,

This should not be an issue - normally you should do dispatching only on 
the original requests and use record_route/loose_route for the 
sequential requests (with no dispatching). CANCEL are automatically 
routed to the same destination as INVITE by TM, so again, you do not 
need to do dispatching on them.

Regards
Bogdan

David Villasmil wrote:
> Hello,
>
>      You can't simply do a round-robin on all messages, you must do it
> with hash on call id. At least in my experience. That's because if you
> send an invite to server 1 and receive a CANCEL and your simply doing
> rr it is not guarateed to go to the same server you sent the original
> INVITE to.... But if you use hash over call-id you can be sure all
> subsequent messages are delivered to the correct server.
>
>
> David
>
> On Sun, Aug 17, 2008 at 8:12 PM, Bogdan-Andrei Iancu
> <bogdan at voice-system.ro> wrote:
>   
>> Hi there,
>>
>> do you get any error into the logs?
>>
>> have you tried to use a different algorithm like 0 (hash over the
>> callid) - second param, to see if there is any difference?
>>
>> Regards,
>> Bogdan
>>
>> technocrat voip wrote:
>>     
>>> I am have openser installed and my expectation with the below
>>> configuration is open ser will forward the request it gets to the
>>> other servers ( dispatch.cfg ) in round robin fashion .
>>>
>>> I mean first will goto the first serer and second to the second server
>>> and third again to first server like that..
>>>
>>> My configs are like below
>>>
>>> openser.cfg
>>>
>>>
>>> children=4
>>>
>>> /* uncomment the following lines to enable debugging */
>>> debug=9
>>> fork=no
>>> log_stderror=yes
>>> port=5060
>>>
>>> /* uncomment and configure the following line if you want openser to
>>>    bind on a specific interface/port/proto (default bind on all
>>> available) */
>>> listen=udp:xxx.xxx.xxx.204:5060
>>>
>>>
>>> ####### Modules Section ########
>>>
>>> #set module path
>>> mpath="/usr/local/lib/openser/modules/"
>>>
>>> /* uncomment next line for MySQL DB support */
>>> #loadmodule "mysql.so"
>>> loadmodule "sl.so"
>>> loadmodule "tm.so"
>>> loadmodule "rr.so"
>>> loadmodule "maxfwd.so"
>>> loadmodule "usrloc.so"
>>> loadmodule "registrar.so"
>>> loadmodule "textops.so"
>>> loadmodule "mi_fifo.so"
>>> loadmodule "uri_db.so"
>>> loadmodule "uri.so"
>>> loadmodule "xlog.so"
>>> loadmodule "acc.so"
>>> loadmodule "dispatcher.so"
>>> # ----------------- setting module-specific parameters ---------------
>>>
>>> # ----- mi_fifo params -----
>>> modparam("mi_fifo", "fifo_name", "/tmp/openser_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)
>>> # ----- rr params -----
>>> modparam("registrar", "method_filtering", 1)
>>> # ----- uri_db params -----
>>> /* by default we disable the DB support in the module as we do not need it
>>>    in this configuration */
>>> modparam("uri_db", "use_uri_table", 0)
>>> modparam("uri_db", "db_url", "")
>>> # ----- usrloc params -----
>>> modparam("usrloc", "db_mode",   0)
>>> /* uncomment the following lines if you want to enable DB persistency
>>>    for location entries */
>>> #modparam("usrloc", "db_mode",   2)
>>> #modparam("usrloc", "db_url",
>>> #    "mysql://openser:openserrw@localhost/openser")
>>>
>>>
>>> # ----- auth_db params -----
>>> /* uncomment the following lines if you want to enable the DB based
>>>    authentication */
>>>
>>> #------ dispatcher params -----
>>> modparam("dispatcher","list_file","/usr/local/etc/openser/dispatcher.cfg")
>>>
>>>
>>> ####### Routing Logic ########
>>>
>>>
>>> # main request routing logic
>>>
>>> route{
>>>
>>>     log(1,"This is the another log message \n");
>>>     xlog("L_INFO", "SIP Request: method [$rm] from [$fu] to [$tu]\n");
>>>
>>>
>>>     if (!mf_process_maxfwd_header("10")) {
>>>         sl_send_reply("483","Too Many Hops");
>>>         exit;
>>>     }
>>>
>>>     ds_select_dst("2","4");
>>>
>>>     forward();
>>> }
>>>
>>>
>>> dispatcher.cfg
>>>
>>> # $Id: dispatcher.list 3662 2008-02-07 13:06:00Z miconda $
>>> # dispatcher destination sets
>>> #
>>>
>>> # line format
>>> # setit(integer) destination(sip uri) flags (integer, optional)
>>>
>>> # proxies
>>> 2 sip:xx.xx.xxx.137:5080
>>> 2 sip:xxx.xxx.xx.59:5080
>>>
>>>
>>> continously it goes to 59 only it never goes to 137 ..
>>>
>>> Any help in this would be appreciated.
>>>
>>>
>>>
>>>
>>> Please
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>       
>> _______________________________________________
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>>
>>     
>
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