[Users] timeout problem with media gateway

Matteo Piazza matteo.piazza at create-net.it
Mon Dec 19 10:02:38 CET 2005


HI, In my serial forking configuration I have this problem:
if i use the a media gateway ( asterisk ) on the same machine ( but I 
see also on the another machine) of openser ( on the 5061 port) I have a 
problem with the timeout of a call. The call continues beyond the 
timeout and when by the PSTN telephone I reject the call appears the 
following log message:

Warning: sl_send_reply: I won't send a reply for ACK!!

Where I have mistake? Any idea?

Another thing. I see that I redirect the call directly in the media 
gateway, (for example a location of a user is a PSTN number) whitout the 
  traslation of IP number, all is ok.

Matteo


======================================
#
# $Id: openser.cfg$
#
#

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


debug=3          # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=yes   # (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/openser_fifo"


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

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

loadmodule "/usr/local/lib/openser/modules/sl.so"
loadmodule "/usr/local/lib/openser/modules/tm.so"
loadmodule "/usr/local/lib/openser/modules/rr.so"
loadmodule "/usr/local/lib/openser/modules/maxfwd.so"
loadmodule "/usr/local/lib/openser/modules/usrloc.so"
loadmodule "/usr/local/lib/openser/modules/registrar.so"
loadmodule "/usr/local/lib/openser/modules/textops.so"
loadmodule "/usr/local/lib/openser/modules/avpops.so"
loadmodule "/usr/local/lib/openser/modules/xlog.so"
loadmodule "/usr/local/lib/openser/modules/lcr.so"


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

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

# -- usrloc params --
modparam("registrar", "append_branches", 1)
#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)



modparam("usrloc","db_url","mysql://openser:heslo@127.0.0.1/openser")
modparam("auth_db","db_url","mysql://openser:heslo@127.0.0.1/openser")
modparam("lcr","db_url","mysql://openser:heslo@127.0.0.1/openser")
modparam("avpops","avp_url","mysql://openser:heslo@127.0.0.1/openser")
modparam("avpops","avp_table","usr_preferences")



modparam("tm", "fr_timer", 7)
modparam("tm", "fr_inv_timer", 10)
modparam("tm", "wt_timer", 5)

#modparam("avpops","avp_aliases","fwdbusy=i:665")





# -------------------------  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");
		exit;
	};

	if (msg:len >=  2048 ) {
		sl_send_reply("513", "Message too big");
		exit;
	};

	# =============================
	# Notify Keep-Alive Section
	# ============================


         if ((method=="NOTIFY") && search("Event: keep-alive")) {
		sl_send_reply("200","OK");
		exit;
		};

	

	if (method =="INVITE" && uri =~"^sip:0[0-9]*@*"){
	                log(1, "Check 1 Start PSTN Call\n");
			rewritehostport("192.168.9.97:5061");
			}


	# ========================================================
	# 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()) {
		if(method=="BYE"){
			t_relay();
			exit;
		};
		# mark routing logic in request
		append_hf("P-hint: rr-enforced\r\n");
		route(1);
	};

	if (!uri==myself) {
		# mark routing logic in request
		append_hf("P-hint: outbound\r\n");
		# if you have some interdomain connections via TLS
		#if(uri=~"@tls_domain1.net") {
		#	t_relay_to_tls("IP_domain1","port_domain1");
		#	exit;
		#} else if(uri=~"@tls_domain2.net") {
		#	t_relay_to_tls("IP_domain2","port_domain2");
		#	exit;
		#}
		route(1);
	};

	# 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("create-net.it", "subscriber")) {
				www_challenge("create-net.it", "0");
				exit;
			};

			save("location");
			exit;
		};

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

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

         # =======================================
	# PSTN Getaway
	# =======================================
	 					


	if(method=="INVITE"){
             if (avp_db_load("$ruri","s:fwdactive")) {
                if(avp_check("s:fwdactive","eq/y/i")){
                   log(1,"FWD ACTIVE\n!");
		  setflag(2);
                }
             };
	
    	    if (avp_db_load("$ruri","s:mailactive")) {
                if(avp_check("s:mailactive","eq/y/i")){
                   log(1,"MAIL ACTIVE\n!");
                   setflag(4);
                }
              }

                if(load_contacts()){
                   xlog("L_ERR","LOAD CONTACTS!\n");
                   setflag(1);
                };
                if(next_contacts()){
                   xlog("L_ERR","NEXT CONTACT!\n");
                };

         };

	

         if(isflagset(2)){
	  t_on_failure("1");
	  t_relay();
	  exit;
         }
         else {
            if(isflagset(4)){
	      t_on_failure("2");
               t_relay();
               exit;
            }
            else {
               t_on_failure("3");
               t_relay();
               exit;
           }
	};	
	
}

route[1] {
# log(1,"ROUTE 1 !\n");
   if (!t_relay()) {
         sl_reply_error();
	};
	exit;
}
		

route[2] {
	# send it out now; use stateful forwarding as it works reliably
	# even for UDP2TCP
         log(1,"ROUTE 2 !\n");
         sl_send_reply("181","CALL IS BEING FORWARDED");
         t_on_failure("1");
	if (!t_relay()) {
		sl_reply_error();
	};
	exit;
}



failure_route[1]{
log(1,"FAILURE ROUTE FORWARD  !\n");
if (t_check_status("408")){
         if (next_contacts()) {
                 log(1,"NUOVO CONTATTO !\n");
                 route(2);
                 exit;
         }
	else {
         	log(1,"FINE CHIAMATA - TIME OUT!\n");
		if (isflagset(4)){
			log(1,"ATTIVAZIONE VOICEMAIL!\n");
			revert_uri();
			xlog("L_ERR","<$ruri>");
			rewritehostport("192.168.9.97:5061");
			append_branch();
			t_relay();
			exit;
		}
		exit;
  	};

  }
  else {
        if ( t_check_status("603") || t_check_status("486") ){
            log(1,"OCCUPATO!\n");
            if (isflagset(4)){
	        log(1,"ATTIVAZIONE VOICEMAIL!\n");
                 revert_uri();
                 xlog("L_ERR","<$ruri>");
                 rewritehostport("192.168.9.97:5061");
                 append_branch();
                 t_relay();
                 exit;
	   }
        exit;
        }
  };
}


failure_route[2] {
  log(1,"FINE CHIAMATA 2 - SENZA FORWARD!\n");
  revert_uri();
  xlog("L_ERR","<$ruri>");
  rewritehostport("192.168.9.97:5061");
  append_branch();
  t_relay();
  exit;
}


failure_route[3] {
  log(1,"FINE CHIAMATA 3 - SENZA FORWARD!\n");
  if ( t_check_status("603") || t_check_status("486") ){
        t_relay();
        exit;
  }
exit;

}











=======================================
  Matteo Piazza, Junior Researcher
  CREATE-NET
  Via Solteri, 38 - 38100 Trento - Italy
  email: matteo.piazza at create-net.it
  Tel: +39-0461-408400ext:308
  www.create-net.it
=======================================




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