[Serusers] Re-routing to same device in failure_route - sr-users

7 Jun 2005

Hi Group,

     Cisco 5300 -----> SER ----> Xten softphone-A ----> Failed call with error
code >400 -------> try to route to Xten softphone A(same as previous)

           I am trying to route calls to softphones in such way that, if call failed by
some reason (>400), trying to route second time to the same soft phone using
append_brach() and t_relay() like below. But, soft phone is unable process INVITE message
for some reason.  But, if I forward failed call different soft phone,  call was
successful.

Am I doing any thing wrong in config ???

Thanks for your help in advance.

Regards,
Karun

##########################################################################################
#
# $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $
#
# simple quick-start config script
#

# ----------- global configuration parameters ------------------------

#debug=9         # debug level (cmd line: -dddddddddd)
#fork=yes
#log_stderror=no        # (cmd line: -E)

/* Uncomment these lines to enter debugging mode
debug=7
fork=no
log_stderror=yes
*/

check_via=no    # (cmd. line: -v)
#dns=no           # (cmd. line: -r)
#rev_dns=no      # (cmd. line: -R)

dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
#port=5060
#children=4
fifo="/tmp/ser_fifo"

#alias=voip.cafe.bevocal.com
#alias=66.77.14.238
alias=209.233.189.177
alias=voice.engca.bevocal.com

# ------------------ module loading ----------------------------------

# Uncomment this if you want to use SQL database
#loadmodule "/usr/lib/ser/modules/mysql.so"

loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/rr.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/usrloc.so"
loadmodule "/usr/lib/ser/modules/registrar.so"
loadmodule "/usr/lib/ser/modules/exec.so"
loadmodule "/usr/lib/ser/modules/textops.so"
#loadmodule "/usr/lib/ser/modules/acc.so"

#modparam("acc", "log_level", 2)
#modparam("acc", "log_flag", 1)
#modparam("acc", "report_cancels", 1)
#modparam("acc", "failed_transactions", 1)

# Uncomment this if you want digest authentication
# mysql.so must be loaded !
#loadmodule "/usr/lib/ser/modules/auth.so"
#loadmodule "/usr/lib/ser/modules/auth_db.so"

# ----------------- setting module-specific parameters ---------------

# -- usrloc params --

modparam("usrloc", "db_mode",   0)

# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
#modparam("usrloc", "db_mode", 2)

# -- auth params --
# Uncomment if you are using auth module
#
#modparam("auth_db", "calculate_ha1", yes)
#
# If you set "calculate_ha1" parameter to yes (which true in this config),
# uncomment also the following parameter)
#
#modparam("auth_db", "password_column", "password")
# -- rr params --
# add value to ;lr param to make some broken UAs happy
modparam("rr", "enable_full_lr", 1)

# -------------------------  request routing logic -------------------

# main routing logic
route{

        # initial sanity checks -- messages with
        # max_forwards==0, or excessively long requests
        if (!mf_process_maxfwd_header("10"))
        {
                sl_send_reply("483","Too Many Hops");
                break;
        };
        if ( msg:len > max_len ) {
                sl_send_reply("513", "Message too big");
                break;
        };

        # we record-route all messages -- to make sure that
        # subsequent messages will go through our proxy; that's
        # particularly good if upstream and downstream entities
        # use different transport protocol
 #       record_route();
        # loose-route processing
        if (loose_route()) {
                t_relay();
                break;
        };
        # if the request is for other domain use UsrLoc
        # (in case, it does not work, use the following command
        # with proper names and addresses in it)
        if (uri==myself)
        {
                if (method=="REGISTER")
                {
                        save("location");
                        break;
                };

                if(method=="INVITE")
                {
                     log(1,"about lookup in route zero");
                     if (!lookup("location")) {
                         log(1,"lookup failed :SIP request from config");
   		 sl_send_reply("404", "Not Found");
                       break;
                     };
                    t_on_failure("5");
                 };
        };

       # forward to current uri now; use stateful forwarding; that
        # works reliably even if we forward from TCP to UDP
        if (!t_relay()) {
                sl_reply_error();
        };

}

failure_route[5] {
    log(1,"Inside failure_route five");
    revert_uri();
     append_branch();
     if (!lookup("location")) {
               log(1,"lookup failed :SIP request from config");
               t_reply("404", "Not Found");
                break;
           };
       if (!t_relay()) {
               sl_reply_error();
      };

}

######################################################################################