# $Id: nat-rtpproxy.cfg 51 2006-01-31 13:28:04Z /CN=Paul Hazlett/emailAddress=paul@onsip.org $

#/usr/local/bin/rtpproxy -l 192.168.103.121/2.3.4.5 -f
debug=6
fork=yes
log_stderror=no
log_facility=LOG_LOCAL1

listen=192.168.103.121     # Internal IP 
listen=2.3.4.5	# External IP	
port=5060
children=4

dns=no
rev_dns=no

#set module path
mpath="/usr/local/lib/openser/modules/"

loadmodule "mysql.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "auth.so"
loadmodule "auth_db.so"
loadmodule "uri.so"
loadmodule "uri_db.so"
loadmodule "nathelper.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"


modparam("auth_db|uri_db|usrloc", "db_url", "mysql://xxx:yyy@192.168.103.122/openser")
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "password_column", "password")

modparam("nathelper", "natping_interval", 30) 
modparam("nathelper", "ping_nated_only", 1)   
modparam("nathelper", "rtpproxy_sock", "unix:/home/sys/bin/rtpproxy.sock")

modparam("nathelper", "received_avp", "$avp(s:rcv)")
modparam("registrar", "received_avp", "$avp(s:rcv)")

modparam("mi_fifo", "fifo_name", "/tmp/openser_fifo")

modparam("usrloc", "db_mode", 2)

modparam("usrloc", "nat_bflag", 6) 

modparam("rr", "enable_full_lr", 1)


route {
  
  setflag(1); # log this msg

	# -----------------------------------------------------------------
	# Sanity Check Section
	# -----------------------------------------------------------------
	if (!mf_process_maxfwd_header("10")) {
		sl_send_reply("483", "Too Many Hops");
		return;
	};

	if (msg:len > max_len) {
		sl_send_reply("513", "Message Overflow");
		return;
	};

	# -----------------------------------------------------------------
	# Record Route Section
	# -----------------------------------------------------------------
	if (method!="REGISTER") {
          record_route();
	};

	if (method=="BYE" || method=="CANCEL") {
		unforce_rtp_proxy();
	} 

	# -----------------------------------------------------------------
	# Loose Route Section
	# -----------------------------------------------------------------
	if (loose_route()) {

		if ((method=="INVITE" || method=="REFER") && !has_totag()) {
			sl_send_reply("403", "Forbidden");
			return;
		};

		if (method=="INVITE") {

			
			setflag(6);
			force_rport();
			fix_nated_contact();
                        
			if (dst_ip == 192.168.103.121){
                           force_rtp_proxy("faie");
                        }
                        else
                        {
                            force_rtp_proxy("faei");
                        }
	      };
	  route(1);
	  return;
	};

	# -----------------------------------------------------------------
	# Call Type Processing Section
	# -----------------------------------------------------------------
	if (uri!=myself) {
		route(4);
		route(1);
		return;
	};

	if (method=="ACK") {
		route(1);
		return;
	} else if (method=="CANCEL") {
		route(1);
		return;
	} else if (method=="INVITE") {
		route(3);
		return;
	} else  if (method=="REGISTER") {
		route(2);
		return;
	};

	lookup("aliases");
	if (uri!=myself) {
		route(4);
		route(1);
		return;
	};

	if (!lookup("location")) {
		sl_send_reply("404", "User Not Found");
		return;
	};

	route(1);
}

route[1] {

	# -----------------------------------------------------------------
	# Default Message Handler
	# -----------------------------------------------------------------

	t_on_reply("1");

	if (!t_relay()) {
		if (method=="INVITE" && isflagset(6)) {
			unforce_rtp_proxy();
		};
		sl_reply_error();
	};
}

route[2] {

	# -----------------------------------------------------------------
	# REGISTER Message Handler
	# ----------------------------------------------------------------

	setflag(6);
	fix_nated_register();
	force_rport();

	sl_send_reply("100", "Trying");
	
	if (!save("location")) {
           log(1,"Error :-(.\n");
           sl_reply_error();
	};
}

route[3] {

	# -----------------------------------------------------------------
	# INVITE Message Handler
	# -----------------------------------------------------------------

	setflag(6);
	
	lookup("aliases");
	if (uri!=myself) {
		route(4);
		route(1);
		return;
	};

	if (!lookup("location")) {
		sl_send_reply("404", "User Not Found");
		return;
	};

	route(4);
	route(1);
}

route[4] {

	# -----------------------------------------------------------------
	# NAT Traversal Section
	# -----------------------------------------------------------------

	force_rport();
	fix_nated_contact();
        if (dst_ip == 192.168.103.121){
            log(1,"INVITE 4  intern extern\n");
	    force_rtp_proxy("fie");
        }
        else
        {
            log(1,"INVITE 4 extern intern\n");
            force_rtp_proxy("fei");
        }
}

onreply_route[1] {

	force_rtp_proxy("f");
	fix_nated_contact();
}