[Serusers] CPL-C and call forward on busy or no answer

[Brinker, Oliver]

Hi Bogdan,

please find attached my ser configuration. I'm using the cvs head version
downloaded two days ago (22.06.04). Should be actual enough ;) Thanks a lot.

Regards,
Oliver

#
# $Id: ser.cfg,v 1.24 2003/11/11 15:32:36 andrei Exp $
#
# simple quick-start config script
#

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

# log into /var/log/messages
debug=9         	# debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no		# (cmd line: -E)

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"

# Additional Alias
alias="sip.et123lab.de"

# ------------------ 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"

# CPL-C module
loadmodule "/usr/local/lib/ser/modules/cpl-c.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)

# -- cpl-c params --
modparam("cpl-c","cpl_db","mysql://xxxx:xxxx@localhost/ser")
modparam("cpl-c","cpl_table","cpl")
modparam("cpl-c","cpl_dtd_file","/usr/local/etc/ser/cpl-06.dtd")
modparam("cpl-c","log_dir","/var/log/ser/cpl")
modparam("cpl-c","proxy_recurse",2)
modparam("cpl-c","proxy_route",1)
modparam("cpl-c","lookup_domain","location")

# -- timer settings --
modparam("tm","noisy_ctimer",1) # this will force timeout
modparam("tm","fr_inv_timer",30) # sets the timeout for INVITE to 30 sec (default is 120)

# -------------------------  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
	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("sip.et123lab.de", "subscriber")) {
				www_challenge("sip.et123lab.de", "0");
				break;
			};

			# handle REGISTER messages containing a CPL script
			cpl_process_register();

			save("location");
			break;
		};

		# process CPL script
		log("cpl: start script processing now");	
		cpl_run_script("incoming","FORCE_STATEFUL");
		log("cpl: script processing has been finished");

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




Bogdan-Andrei IANCU [mailto:iancu at fokus.fraunhofer.de] wrote 

Hi Oliver,

please send me your ser.cfg - it will help me to trace the problem. Also 
be sure you are using the latest cvs head version - there were some 
updates 1 or 2 weeks ago.

Regards,
Bogdan

Brinker, Oliver wrote:

>Hi Bogdan,
>
>I solved the problem with SER startup. The reason was that I download 
>the CVS head onto my notebook and copy it via ftp to the linux server. 
>After downloading CVS head directly onto the linux server, compiling 
>and installing it SER starts up without any error message.
>
>But I have still the problem with call forwarding on busy or no answer. 
>Inserting log information into my CPL script I can reproduce that SER 
>is never processing the <busy> or <noanswer> tag and the following 
>tags. I try out the example script from the current IETF CPL draft for 
>Call Forward Busy/No Answer in the following scenario:
>
>6131 forwards calls to 613 if busy -> 6131 has an active session with 
>614 -> 612 calls 6131 -> 6131 is busy and SER should invite 613
>
>After uploading the CPL script for 6131 the caller 614 cannot reach 
>6131 and the syslog represents the attached error message.
>
>Can you identify any mistake I've done in my configuration? Many 
>thanks.
>
>Best Regards,
>
>Oliver
>  
>