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

[David Villasmil]

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
>> ------------------------------------------------------------------------
>>
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>> Users at lists.opensips.org
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>>
>
>
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