[Serusers] t_relay_to howto - sr-users

7 Nov 2003

Hi

I am having some problems with the simplest tasks in ser. I can't see to get ser to
start. It doesn't like my call to the t_relay_to command. Obviously I am being a bit
of a thickie. Anyone care to point out where my error is. The following is the whole of
the ser.cfg file.
#

#

# $Id: ser.cfg,v 1.21.2.1 2003/07/30 16:46:18 andrei Exp $

#

# simple quick-start config script

#

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

#debug=3 # debug level (cmd line: -dddddddddd)

#fork=yes

#log_stderror=no # (cmd line: -E)

# Uncomment these lines to enter debugging mode 

debug=100

fork=yes

# listen="192.168.154.81"

log_stderror=yes

#*/

check_via=no # (cmd. line: -v)

dns=no # (cmd. line: -r)

rev_dns=no # (cmd. line: -R)

#port=5060

#children=4

fifo="/tmp/ser_fifo"

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

# Uncomment this if you want to use SQL database

loadmodule "/usr/local/lib/ser/modules/mysql.so"

loadmodule "/usr/local/lib/ser/modules/sl.so"

loadmodule "/usr/local/lib/ser/modules/tm.so"

loadmodule "/usr/local/lib/ser/modules/rr.so"

loadmodule "/usr/local/lib/ser/modules/maxfwd.so"

loadmodule "/usr/local/lib/ser/modules/usrloc.so"

loadmodule "/usr/local/lib/ser/modules/registrar.so"

# Uncomment this if you want digest authentication

# mysql.so must be loaded !

loadmodule "/usr/local/lib/ser/modules/auth.so"

loadmodule "/usr/local/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)

# Set natping_interval parameter

#modparam("nathelper", "natping_interval", 10)

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

# main routing logic

route{

log("\nHELLO WORLD\n");

lookup("aliases");

log("\nAFTER lookup aliases\n");

# 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;

};

log("\nAFTER Too Many Hops\n");

if (len_gt( max_len )) {

sl_send_reply("513", "Message too big");

break;

};

log("\nAfter Message too big\n");

# 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(); 

log("\nAFTER RECORD ROUTE\n");

# loose-route processing

if (loose_route()) {

t_relay();

break;

};

log("\nAFTER LOOSE ROUTE\n");

#Call to nathlper module functions for Grandstream

# fix_nated_contact();

# fix_nated_sdp(3);

log("\nJUST BEFORE PSTN stuff\n");

#added by Muhammad

# if requests URI is numerical and starts with zero, forward statelessly to a static
destination

# zero, forward statelessly to a static destination

if (uri=~"^sip:0[0-9]*@telser.dyndns.org") {

log("\nFORWARDING TO PSTN\n");

#forward( telgw2.dyndns.org, 5060 );

#forward(82.145.32.73, 5060);

t_relay_to("82.145.32.73", "5060");

log("\nABOUT TO BREAK\n");

break;

};

#end of Muhammad addition

# 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") {

# Uncomment this if you want to use digest authentication

if (!www_authorize("telser.dyndns.org", "subscriber")) {

log(8,"XXXXX We are not authorized");

www_challenge("telser.dyndns.org", "0");

break;

};

save("location");

break;

};

# native SIP destinations are handled using our USRLOC DB

if (!lookup("location")) {

sl_send_reply("404", "Not Found");

break;

};

};

# 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();

};

log("\nEND of ROUTING SCRIPT\n");

}