[Serusers] [Help] Setting up SER in Redirect mode

[anonymous anonymous]

Hello all,

I am a student currently studying SIP with SER on a Slackware 10.2 system. I 
could have my test network working fine in proxy/registrar mode but I am 
having trouble in configuring SER for redirect mode.
Actually I am totally new at SER administration and don't feel really 
comfortable in implementing code blocks into ser.cfg
When I use the following ser.cfg file, SER simply ignore the redirect block 
and call alice at 192.168.1.2 whereas the call should be redirected to 
192.168.1.4
I've been driftng all around the Internet gathering hints and tips for a few 
days but I'm still at that point.
I guess it's a programming problem but can't find what's wrong exactly.
Thank you in advance for your help.

Matthieu


Here is my uname -a result:
Linux PC1 2.4.31 #6 Sun Jun 5 19:04:47 PDT 2005 i686 unknown unknown 
GNU/Linux

My SER build:
version: ser 0.9.4 (i386/linux)
flags: STATS: Off, USE_IPV6, USE_TCP, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, 
SHM_MEM, SHM_MMAP, PKG_MALLOC, F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, 
MAX_URI_SIZE 1024, BUF_SIZE 65535
@(#) $Id: main.c,v 1.197.2.1 2005/07/25 16:56:24 andrei Exp $
main.c compiled on 15:54:20 Sep  6 2005 with gcc 4.0.1

My ser.cfg file based upon default 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=8         # debug level (cmd line: -dddddddddd)
fork=no
log_stderror=yes	# (cmd line: -E)

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

listen=192.168.1.1

check_via=yes	# (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"
loadmodule "/usr/local/lib/ser/modules/textops.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)

# -------------------------  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;
		};

		# redirect block, maybe at the wrong place
		if (uri=="sip:alice at 192.168.1.2") {
			rewritehost("192.168.1.4");
			sl_send_reply("302", "Redirect");
		}
	};
	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
	if (!t_relay()) {
		sl_reply_error();
	};
}

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