gistfile1.txt

#!KAMAILIO
#
#!define WITH_DEBUG

#!substdef "!REGISTRAR_IP!registrar.example.com!g"
#!substdef "!FLOW_TIMER!20!g"

####### Include Local Config If Exists #########
import_file "kamailio-local.cfg"

####### Global Parameters #########

### LOG Levels: 3=DBG, 2=INFO, 1=NOTICE, 0=WARN, -1=ERR
#!ifdef WITH_DEBUG
debug=4
#!else
debug=2
#!endif
log_stderror=no

memdbg=5
memlog=5

log_facility=LOG_LOCAL0

fork=yes
children=4

/* uncomment the next line to disable TCP (default on) */
disable_tcp=no
tcp_accept_no_cl=yes

/* uncomment the next line to disable the auto discovery of local aliases
	 based on reverse DNS on IPs (default on) */
#auto_aliases=no

/* add local domain aliases */
#alias="sip.mydomain.com"

/* uncomment and configure the following line if you want Kamailio to
	 bind on a specific interface/port/proto (default bind on all available) */
#
#listen=udp:cnpserver1:5060

/* port to listen to
 * - can be specified more than once if needed to listen on many ports */
port=5060

#!ifdef WITH_TLS
enable_tls=yes
#!endif

# life time of TCP connection when there is no traffic
# - a bit higher than registration expires to cope with UA behind NAT
tcp_connection_lifetime=3605

listen=eth0

tcp_connection_lifetime=30 # FLOW_TIMER + 10
tcp_accept_no_cl=yes
tcp_rd_buf_size=16384

force_rport=yes

####### Modules Section ########

# set paths to location of modules (to sources or installation folders)
#!ifdef WITH_SRCPATH
mpath="modules_k:modules"
#!else
mpath="/usr/local/lib/kamailio/modules_k/:/usr/lib64/kamailio/modules/:/usr/lib/x86_64-linux-gnu/kamailio/modules/"
#!endif

loadmodule "mi_fifo.so"
loadmodule "kex.so"
loadmodule "corex.so"
loadmodule "tm.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "textops.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "cfg_rpc.so"
loadmodule "mi_rpc.so"
loadmodule "rtpproxy-ng.so"
loadmodule "stun.so"
loadmodule "outbound.so"
loadmodule "path.so"

#!ifdef WITH_TLS
loadmodule "tls.so"
#!endif

#!ifdef WITH_DEBUG
loadmodule "debugger.so"
#!endif

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


# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")


# ----- tm params -----
# auto-discard branches from previous serial forking leg
modparam("tm", "failure_reply_mode", 3)
# default retransmission timeout: 30sec
modparam("tm", "fr_timer", 30000)
# default invite retransmission timeout after 1xx: 120sec
modparam("tm", "fr_inv_timer", 120000)


# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 0)


# ----- rtpproxy params -----
modparam("rtpproxy-ng", "rtpproxy_sock", "udp:127.0.0.1:12221")

#!ifdef WITH_TLS
# ----- tls params -----
modparam("tls", "config", "/home/kamailio-4.0/etc/kamailio/tls.cfg")
#!endif

#!ifdef WITH_DEBUG
# ----- debugger params -----
modparam("debugger", "cfgtrace", 1)
#!endif

####### Routing Logic ########

request_route {
	route(REQINIT);

	if (is_method("CANCEL")) {
		if (t_check_trans()) {
			route(RELAY);
		}
		exit;
	}

	route(WITHINDLG);

	t_check_trans();

	if (is_method("REGISTER")) {
		remove_hf("Route");
		add_path();
		$du = "sip:REGISTRAR_IP";
	} else {
		if (is_method("INVITE|SUBSCRIBE"))
			record_route();

		if (@via[2] == "") {
			# From client so route to registrar...

			rtpproxy_manage("coSP+");

			if ($rU == $null) {
				sl_send_reply("484", "Address Incomplete");
				exit;
			}
			remove_hf("Route");
			$du = "sip:REGISTRAR_IP";
		} else {
			# From registrar so route using "Route:" headers...

			rtpproxy_manage("cosp+");

			t_on_failure("FAIL_OUTBOUND");
		}
	}

	route(RELAY);
}

route[RELAY] {
	if (!t_relay()) {
		sl_reply_error();
	}
	exit;
}

route[REQINIT] {
	if (!mf_process_maxfwd_header("10")) {
		sl_send_reply("483","Too Many Hops");
		exit;
	}

	if(!sanity_check("1511", "7"))
	{
		xlog("Malformed SIP message from $si:$sp\n");
		exit;
	}
}

route[WITHINDLG] {
	if (has_totag()) {
		if (!loose_route()) {
			switch($rc) {
			case -2:
				sl_send_reply("403", "Forbidden");
				exit;
			default:
				if (is_method("ACK")) {
					if ( t_check_trans() ) {
						route(RELAY);
						exit;
					} else {
						exit;
					}
				}
				sl_send_reply("404","Not Found");
			}
		} else {
			if (is_method("NOTIFY")) {
				record_route();
			}
			route(RELAY);
		}
		exit;
	}
}

onreply_route {
	if (!t_check_trans()) {
		drop;
	}

	rtpproxy_manage("coSP+");

	if ($rm == "REGISTER" && $rs >= 200 && $rs <= 299) {
		remove_hf("Flow-Timer");
		if ($(hdr(Require)[*])=~"outbound")
			insert_hf("Flow-Timer: FLOW_TIMER\r\n", "Call-ID");
	}
}

failure_route[FAIL_OUTBOUND] {
	if (t_branch_timeout() || !t_branch_replied()) {
		send_reply("430", "Flow Failed");
	}
}