[Serusers] Configuring SER to work as SIP proxy

[dzus at mat.uni.torun.pl]

All,

I am trying to configure SER to work as SIP proxy (not registar and  
not redirect). I tried to modify simple ser.cfg which comes with SER  
by adding one line in route[0]:

	rewritehostport("192.168.1.2:5060");

This unfortunately doesn't work. The message to my SIP server  
192.168.1.2 are indeed forwarded. But message comming back from  
192.168.1.2 are looped by my SIP proxy (192.168.1.3) back to SIP  
server (192.168.1.2).

Can someone help me? Or send a working cfg for SIP proxy, I cannot find any.

This is my complete ser.cfg:
#
# $Id: ser.cfg,v 1.25.2.1 2005/02/18 14:30:44 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
fork=no
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 "//lib/ser/modules/mysql.so"

loadmodule "//lib/ser/modules/sl.so"
loadmodule "//lib/ser/modules/tm.so"
loadmodule "//lib/ser/modules/rr.so"
loadmodule "//lib/ser/modules/maxfwd.so"
loadmodule "//lib/ser/modules/usrloc.so"
loadmodule "//lib/ser/modules/registrar.so"
loadmodule "//lib/ser/modules/textops.so"

# Uncomment this if you want digest authentication
# mysql.so must be loaded !
#loadmodule "//lib/ser/modules/auth.so"
#loadmodule "//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 >=  2048 ) {
		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
	if (!method=="REGISTER") record_route();

	# subsequent messages withing a dialog should take the
	# path determined by record-routing
	if (loose_route()) {
		# mark routing logic in request
		append_hf("P-hint: rr-enforced\r\n");
		route(1);
		break;
	};

	if (!uri==myself) {
		# mark routing logic in request
		append_hf("P-hint: outbound\r\n");
		route(1);
		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") {

# Uncomment this if you want to use digest authentication
#			if (!www_authorize("iptel.org", "subscriber")) {
#				www_challenge("iptel.org", "0");
#				break;
#			};

			save("location");
			break;
		};

		lookup("aliases");
		if (!uri==myself) {
			append_hf("P-hint: outbound alias\r\n");
			route(1);
			break;
		};

		# native SIP destinations are handled using our USRLOC DB
		if (!lookup("location")) {
			sl_send_reply("404", "Not Found");
			break;
		};
	};
	append_hf("P-hint: usrloc applied\r\n");
	route(1);
}

route[1]
{
	# send it out now; use stateful forwarding as it works reliably
	# even for UDP2TCP

	# Dzus
	rewritehostport("192.168.1.2:5060");

	if (!t_relay()) {
		sl_reply_error();
	};
}



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