####### Defined Values #########

# - flags
#   FLT_ - per transaction (message) flags
#	FLB_ - per branch flags
#!define FLT_ACC 1
#!define FLT_ACCMISSED 2
#!define FLT_ACCFAILED 3
#!define FLT_NATS 5

#!define FLB_NATB 6
#!define FLB_NATSIPPING 7

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

### LOG Levels: 3=DBG, 2=INFO, 1=NOTICE, 0=WARN, -1=ERR
debug=3
log_stderror=no

memdbg=5
memlog=5

log_facility=LOG_LOCAL0

fork=yes
children=8

/* uncomment the next line to disable TCP (default on) */
disable_tcp=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=50.0.0.1

/* 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:50.0.0.1:5060 advertise 194.190.8.171:5060
#listen=udp:194.190.8.171:5060 advertise 50.0.0.1:5060

listen=udp:194.190.8.171
listen=udp:50.0.0.1

dns=no
rev_dns=no
check_via=yes

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

mhomed=1

# 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=300

####### Custom Parameters #########

asterisk.bindip = "50.0.0.10" desc "Asterisk IP Address"
asterisk.bindport = "5060" desc "Asterisk Port"
kamailio.bindip = "50.0.0.1" desc "Kamailio IP Address"
kamailio.bindport = "5060" desc "Kamailio Port"

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

# set paths to location of modules (to sources or installation folders)
mpath="/usr/lib64/kamailio/modules/"



loadmodule "mi_fifo.so"
loadmodule "kex.so"
loadmodule "tm.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.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 "acc.so"

loadmodule "nathelper.so"
loadmodule "rtpproxy.so"

loadmodule "dialog.so"

modparam("dialog", "enable_stats", 1)
modparam("dialog", "dlg_flag", 4)


#loadmodule "path.so"

# -- path params --
#modparam("path", "use_received", 1)

#loadmodule "topoh.so"
#modparam("topoh", "mask_key", "balalayka")
#modparam("topoh", "mask_ip", "50.0.0.1")

# ----------------- 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)
modparam("tm", "reparse_on_dns_failover", 0)


# ----- 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", 1)


# ----- acc params -----
/* what special events should be accounted ? */
modparam("acc", "early_media", 0)
modparam("acc", "report_ack", 0)
modparam("acc", "report_cancels", 0)
/* by default ww do not adjust the direct of the sequential requests.
   if you enable this parameter, be sure the enable "append_fromtag"
   in "rr" module */
modparam("acc", "detect_direction", 0)
/* account triggers (flags) */
modparam("acc", "log_flag", FLT_ACC)
modparam("acc", "log_missed_flag", FLT_ACCMISSED)
modparam("acc", "log_extra",
	"src_user=$fU;src_domain=$fd;src_ip=$si;"
	"dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
modparam("acc", "failed_transaction_flag", FLT_ACCFAILED)



# ----- rtpproxy params -----
modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7722")

# ----- nathelper params -----
modparam("nathelper", "natping_interval", 30)
modparam("nathelper", "ping_nated_only", 1)
modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
modparam("nathelper", "sipping_from", "sip:pinger@194.190.8.171")

# params needed for NAT traversal in other modules
modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")
modparam("usrloc", "nat_bflag", FLB_NATB)


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Main SIP request routing logic
# - processing of any incoming SIP request starts with this route
# - note: this is the same as route { ... }
route {

	# per request initial checks
	route(REQINIT);

	# NAT detection
	route(NATDETECT);

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

	# handle requests within SIP dialogs
	route(WITHINDLG);

	### only initial requests (no To tag)

	t_check_trans();

	# record routing for dialog forming requests (in case they are routed)
	# - remove preloaded route headers
	remove_hf("Route");
	if (is_method("INVITE|SUBSCRIBE"))
		record_route();

	# account only INVITEs
	if (is_method("INVITE"))
	{
		setflag(FLT_ACC); # do accounting
	}

	# dispatch requests to foreign domains
	route(SIPOUT);

	### requests for my local domains

	# handle presence related requests
	route(PRESENCE);

	# handle registrations
	route(REGISTRAR);

	if ($rU==$null)
	{
		# request with no Username in RURI
		sl_send_reply("484","Address Incomplete");
		exit;
	}

	# dispatch destinations to PSTN
	route(PSTN);

	# user location service
	route(LOCATION);
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Per SIP request initial checks
route[REQINIT] {
	if (!mf_process_maxfwd_header("10")) {
		sl_send_reply("483","Too Many Hops");
		xlog("483 Too Many Hops to $du\n");
		exit;
	}

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


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Caller NAT detection route
route[NATDETECT] {
	force_rport();
	xlog("L_NOTICE","--------------------- FORCE RPORT --------------------------------------\n");
	if (nat_uac_test("19")) {
		if (is_method("REGISTER")) {
#	                forward("50.0.0.10");
#        	        xlog("L_NOTICE","--------------------- NATDETECT REGISTER FWD --------------------------------------\n");
			xlog("L_NOTICE","--------------------- BEFORE fix_nated_register TO_URI: $dlg(to_uri) FROM_URI: $dlg(from_uri) --------------------------------------\n");
			fix_nated_register();
			xlog("L_NOTICE","--------------------- fix_nated_register TO_URI: $dlg(to_uri) FROM_URI: $dlg(from_uri) --------------------------------------\n");
		} else {
			if(is_first_hop())
				xlog("L_NOTICE","--------------------- BEFORE set_contact_alias $dlg(to_contact) --------------------------------------\n");
				set_contact_alias();
				xlog("L_NOTICE","--------------------- set_contact_alias $dlg(to_contact) --------------------------------------\n");
		}
		xlog("L_NOTICE","--------------------- BEFORE setflag(FLT_NATS) flags: $mf --------------------------------------\n");
		setflag(FLT_NATS);
		xlog("L_NOTICE","--------------------- setflag(FLT_NATS) flags: $mf --------------------------------------\n");
	}
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Handle requests within SIP dialogs
route[WITHINDLG] {
	if (has_totag()) {
		xlog("L_NOTICE","--------------------- chech to tag: $tt $dlg(to_tag) --------------------------------------\n");
		# sequential request withing a dialog should
		# take the path determined by record-routing
		if (loose_route()) {
			route(DLGURI);
			if (is_method("BYE")) {
				setflag(FLT_ACC); # do accounting ...
				xlog("L_NOTICE","--------------------- FLT_ACC setflag check: $tt --------------------------------------\n");
				setflag(FLT_ACCFAILED); # ... even if the transaction fails
				xlog("L_NOTICE","--------------------- FLT_ACCFAILED setflag check: $tt --------------------------------------\n");
			}
			else if ( is_method("ACK") ) {
				# ACK is forwarded statelessy
				route(NATMANAGE);
			}
			else if ( is_method("NOTIFY") ) {
				# Add Record-Route for in-dialog NOTIFY as per RFC 6665.
				xlog("L_NOTICE","--------------------- BEFORE rr TO_RS: $dlg(to_rs) FROM_RS: $dlg(from_rs) --------------------------------------\n");
				record_route();
				xlog("L_NOTICE","--------------------- rr TO_RS: $dlg(to_rs) FROM_RS: $dlg(from_rs) --------------------------------------\n");
			}
			route(RELAY);
		} else {
			if (is_method("SUBSCRIBE") && uri == myself) {
				# in-dialog subscribe requests
				route(PRESENCE);
				exit;
			}
			if ( is_method("ACK") ) {
				if ( t_check_trans() ) {
					# no loose-route, but stateful ACK;
					# must be an ACK after a 487
					# or e.g. 404 from upstream server
					route(RELAY);
					exit;
				} else {
					# ACK without matching transaction ... ignore and discard
					exit;
				}
			}
			sl_send_reply("404","Not here");
		}
		exit;
	}
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Routing to foreign domains
route[SIPOUT] {
	if (!uri==myself)
	{
		append_hf("P-hint: outbound\r\n");
		route(RELAY);
	}
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################

# Presence server route
route[PRESENCE] {
	if(!is_method("PUBLISH|SUBSCRIBE"))
		return;

	if(is_method("SUBSCRIBE") && $hdr(Event)=="message-summary") {
		forward("50.0.0.10");
		xlog("L_NOTICE","--------------------- PRESENSE FWD --------------------------------------\n");
#		route(TOVOICEMAIL);
		# returns here if no voicemail server is configured
#		sl_send_reply("404", "No voicemail service");
		exit;
	}

	# if presence enabled, this part will not be executed
	if (is_method("PUBLISH") || $rU==$null)
	{
		sl_send_reply("404", "Not here");
		exit;
	}
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# Handle SIP registrations
route[REGISTRAR] {
	if (is_method("REGISTER"))
	{
		forward("50.0.0.10");
		xlog("L_NOTICE","--------------------- REGISTER FWD --------------------------------------\n");

		if(isflagset(FLT_NATS))
		{
#			setbflag(FLB_NATB);
#			# uncomment next line to do SIP NAT pinging
#			xlog("L_NOTICE","--------------------- BEFORE NATSIPPING setflag check: $tt --------------------------------------\n");
			setbflag(FLB_NATSIPPING);
			xlog("L_NOTICE","--------------------- NATSIPPING setflag check: $tt --------------------------------------\n");
		}
		if (!save("location"))
			sl_reply_error();

		exit;
	}
}

#route[REGISTRAR] {
#	if (is_method("REGISTER"))
#		{
#		forward("50.0.0.10");
#		save("sip:50.0.0.10","0x02");
#		t_relay_to_udp("50.0.0.10", "5060");
#		exit;
#       		}
#}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# PSTN GW routing
route[PSTN] {
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# USER location service
route[LOCATION] {

	$avp(oexten) = $rU;
	if (!lookup("location")) {
		$var(rc) = $rc;
		route(TOVOICEMAIL);
		t_newtran();
		switch ($var(rc)) {
			case -1:
			case -3:
				send_reply("404", "Not Found");
				exit;
			case -2:
				send_reply("405", "Method Not Allowed");
				exit;
		}
	}

	# when routing via usrloc, log the missed calls also
	if (is_method("INVITE"))
	{
		xlog("L_NOTICE","--------------------- NEED TO REMOVE setflag check: $tt -------------------------------------\n");
		setflag(FLT_ACCMISSED);
		xlog("L_NOTICE","--------------------- NEED TO REMOVE setflag check: $tt --------------------------------------\n");
		forward("50.0.0.10");
		xlog("L_NOTICE","--------------------- INVITE FWD --------------------------------------\n");
	}

	route(RELAY);
	exit;
}



####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


route[RELAY] {

	# enable additional event routes for forwarded requests
	# - serial forking, RTP relaying handling, a.s.o.
	if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE")) {
		if(!t_is_set("branch_route")) t_on_branch("MANAGE_BRANCH");
	}
	if (is_method("INVITE|SUBSCRIBE|UPDATE")) {
		if(!t_is_set("onreply_route")) t_on_reply("MANAGE_REPLY");
	}
	if (is_method("INVITE")) {
		if(!t_is_set("failure_route")) t_on_failure("MANAGE_FAILURE");
	}

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

# manage outgoing branches
branch_route[MANAGE_BRANCH] {
	xdbg("new branch [$T_branch_idx] to $ru\n");
	xlog("L_NOTICE","new branch [$T_branch_idx] to $ru\n");
	route(NATMANAGE);
}

# manage incoming replies
onreply_route[MANAGE_REPLY] {
	xdbg("incoming reply\n");
	xlog("L_NOTICE","incoming reply\n");
	if(status=~"[12][0-9][0-9]")
		route(NATMANAGE);
}

# manage failure routing cases
failure_route[MANAGE_FAILURE] {
	route(NATMANAGE);
	if (t_is_canceled()) {
		exit;
	}

}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# route to voicemail server
route[TOVOICEMAIL] {
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# URI update for dialog requests
route[DLGURI] {
	if(!isdsturiset()) {
		xlog("L_NOTICE","--------------------- BEFORE HANDLE RURI ALIAS TO_URI: $dlg(to_uri) FROM_URI: $dlg(from_uri) --------------------------------------\n");
		handle_ruri_alias();
		xlog("L_NOTICE","--------------------- HANDLE RURI ALIAS TO_URI: $dlg(to_uri) FROM_URI: $dlg(from_uri) --------------------------------------\n");
	}
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################


# RTPProxy control
route[NATMANAGE] {
	if (is_request()) {
		if(has_totag()) {
			if(check_route_param("nat=yes")) {
				setbflag(FLB_NATB);
			}
		}
	}
	if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB)))
		return;

	rtpproxy_manage();

	if (is_request()) {
		if (!has_totag()) {
			if(t_is_branch_route()) {
				add_rr_param(";nat=yes");
			}
		}
	}
	if (is_reply()) {
		if(isbflagset(FLB_NATB)) {
			if(is_first_hop())
				set_contact_alias();
		}
	}
	return;
}


####################################################################################################
#################### in the end of the route u meet UCHIBUCHI. just ignore him. ####################
####################################################################################################