[SR-Users] Fwd: Re: beginner's problem with sipping

Petr Wozniak Petr.Wozniak at seznam.cz
Mon Nov 10 22:13:08 CET 2014


I apologize the last sentence of my previous email should be "...but no 
OPTIONS pings on client's side"




Now I have installed kamailio 4.2 on server and client is behind NAT with 
enabled NATSIPPING and the result is the same like on private network = no 
OPTIONS ping. The only changes in default kamailio.cfg are:




#!define WITH_MYSQL

#!define WITH_AUTH

#!define WITH_USRLOCDB

#!define WITH_NAT

#!define WITH_NATSIPPING







alias="89.187.145.51"

listen=tcp:89.187.145.51:5060

listen=tcp:127.0.0.1:5060




modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7722")

# ----- nathelper params -----

modparam("nathelper", "natping_interval", 10)

modparam("nathelper", "ping_nated_only", 0)

modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)

modparam("nathelper", "sipping_method", "OPTIONS")

modparam("nathelper", "sipping_from", "sip:pinger at 89.187.145.51")

# params needed for NAT traversal in other modules

modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")

modparam("usrloc", "nat_bflag", FLB_NATB)




and




route[REGISTRAR] {

      if (!is_method("REGISTER")) return;

      if(isflagset(FLT_NATS)) {

                  setbflag(FLB_NATB);

                  setbflag(FLB_NATSIPPING);

                   }

         if (!save("location"))

        sl_reply_error();

        exit;

}




After registration the Cflag is 192 so in my opinion nat_bflag and sipping_
bflag are set but no OPTIONS pings on clint's side. I understand that it is 
 trivial problem but would somebody be so kind to help me to solve it?




Thank you




Petr




---------- Původní zpráva ----------
Od: Petr Wozniak <Petr.Wozniak at seznam.cz>
Komu: miconda at gmail.com, Kamailio (SER) - Users Mailing List <sr-users@
lists.sip-router.org>
Datum: 10. 11. 2014 18:03:23
Předmět: Re: [SR-Users] beginner's problem with sipping

"

Thank you very much Daniel.

 

I have adjusted the parameter for nat_uac_test() to 128 without success. 

 

Then I disable NATDETECT route and only load modules nathelper and rtpproxy 
and set their parameters to

modparam("nathelper", "natping_interval", 10)

modparam("nathelper", "ping_nated_only", 0)

modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)

modparam("nathelper", "sipping_method", "OPTIONS")

modparam("nathelper", "sipping_from", "sip:pinger at 192.168.1.44")

 

modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")

 

and

 

route[REGISTRAR] {

      if (is_method("REGISTER")) {

               setbflag(FLB_NATSIPPING);

               if (!save("location"))

               sl_reply_error();

               exit;

}

}

 

 

 

cflag after registration is 128 so in my opinion FLB_NATSIPPIG flag is set 
but OPTIONS pings on client's side.

 

kamailio.cfg please you find attached

 

Thank you

 

Regards

 

Petr


---------- Původní zpráva ----------
Od: Daniel-Constantin Mierla <miconda at gmail.com>
Komu: Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org>
Datum: 10. 11. 2014 9:22:38
Předmět: Re: [SR-Users] beginner's problem with sipping

"
Hello,

if you are in a private network, you need to adjust the parameter for nat_
uac_test() function to ignore private addresses in check tests -- see the 
readme of nathelper module.

Cheers,
Daniel


On 09/11/14 19:33, Petr Wozniak wrote:

" 
Dear sr-users,

 
 
I am beginner and apologize for bothering you with such a trivial problem.

I would like to test sip UDP and TCP keepalive pinging. Kamailio and client 
 are on the same network (192.168.1.44 and 192.168.1.20) that implies not 
behind NAT. So in kamailio.cfg I have set
 
 
 
modparam("nathelper", "ping_nated_only", 0)

 
 
My simple kamailio.cfg please you find enclosed.

>From logfiles on client's side implies that neither UDP nor OPTIONS pings 
are sending from kamailio.
If somebody would be so kind to help me I will be very glad.

 
 
Thank you in advance

 
 
Regards

 
 
Petr



_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
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" 

-- 
Daniel-Constantin Mierla
<a href='http://twitter.com/#!/miconda'>http://twitter.com/#!/miconda</a> - <a href='http://www.linkedin.com/in/miconda'>http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Nov 24-27, Berlin - <a href='http://www.asipto.com'>http://www.asipto.com</a>

_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users at lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users at lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
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#!KAMAILIO
#
#!define WITH_MYSQL
#!define WITH_AUTH
#!define WITH_USRLOCDB


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

# *** Value defines - IDs used later in config
#!ifdef WITH_MYSQL
# - database URL - used to connect to database server by modules such
#       as: auth_db, acc, usrloc, a.s.o.
#!ifndef DBURL
#!define DBURL "mysql://kamailio:kamailiorw@localhost/kamailio"
#!endif
#!endif
#!define MULTIDOMAIN 0

# - 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
#!ifdef WITH_DEBUG
debug=4
log_stderror=yes
#!else
debug=2
log_stderror=no
#!endif

memdbg=5
memlog=5

log_facility=LOG_LOCAL0

fork=yes
children=4

alias="192.168.1.44"

listen=tcp:192.168.1.44:5060
listen=tcp:127.0.0.1:5060

#!ifdef WITH_TLS
enable_tls=yes
#!endif

tcp_connection_lifetime=3605

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


mpath="/usr/lib/x86_64-linux-gnu/kamailio/modules/"

#!ifdef WITH_MYSQL
loadmodule "db_mysql.so"
#!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 "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"

#!ifdef WITH_AUTH
loadmodule "auth.so"
loadmodule "auth_db.so"
#!endif


loadmodule "nathelper.so"
loadmodule "rtpproxy.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)

# ----- registrar params -----
modparam("registrar", "method_filtering", 1)
/* uncomment the next line to disable parallel forking via location */
# modparam("registrar", "append_branches", 0)
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)
# max value for expires of registrations
modparam("registrar", "max_expires", 60)
# set it to 1 to enable GRUU
modparam("registrar", "gruu_enabled", 0)

# ----- usrloc params -----
/* enable DB persistency for location entries */
#!ifdef WITH_USRLOCDB
modparam("usrloc", "db_url", DBURL)
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "use_domain", MULTIDOMAIN)
#!endif

# ----- auth_db params -----
#!ifdef WITH_AUTH
modparam("auth_db", "db_url", DBURL)
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "load_credentials", "")
modparam("auth_db", "use_domain", MULTIDOMAIN)

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

# ----- nathelper params -----
modparam("nathelper", "natping_interval", 10)

modparam("nathelper", "ping_nated_only", 0)
modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
modparam("nathelper", "sipping_method", "OPTIONS")
modparam("nathelper", "sipping_from", "sip:pinger at 192.168.1.44")

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


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

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

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


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

	# authentication
	route(AUTH);

	# 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
	}

	### requests for my local domains

	# handle registrations
	route(REGISTRAR);

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

	# user location service
	route(LOCATION);
}


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;
}

# Per SIP request initial checks
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;
	}
}

# Handle requests within SIP dialogs
route[WITHINDLG] {
	if (has_totag()) {
		# 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 ...
				setflag(FLT_ACCFAILED); # ... even if the transaction fails
			}
			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.
				record_route();
			}
			route(RELAY);
		} else {
			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;
	}
}

route[REGISTRAR] {
	if (is_method("REGISTER")) {
	setbflag(FLB_NATSIPPING);
	
		if (!save("location"))
			sl_reply_error();

		exit;
	}
}

# USER location service
route[LOCATION] {
	if (!lookup("location")) {
		$var(rc) = $rc;
		t_newtran();
		switch ($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")) {
		setflag(FLT_ACCMISSED);
	}

	route(RELAY);
	exit;
}


# Authentication route
route[AUTH] {
#!ifdef WITH_AUTH

	if (is_method("REGISTER") || from_uri==myself) {
		# authenticate requests
		if (!auth_check("$fd", "subscriber", "1")) {
			auth_challenge("$fd", "0");
			exit;
		}
		# user authenticated - remove auth header
		if(!is_method("REGISTER|PUBLISH"))
			consume_credentials();
	}
	# if caller is not local subscriber, then check if it calls
	# a local destination, otherwise deny, not an open relay here
	if (from_uri!=myself && uri!=myself) {
		sl_send_reply("403","Not relaying");
		exit;
	}

#!endif
	return;
}

# Caller NAT detection route
route[NATDETECT] {
#!ifdef WITH_NAT
	force_rport();
	if (nat_uac_test("128")) {
		if (is_method("REGISTER")) {
			fix_nated_register();
		} else {
			add_contact_alias();
		}
		setflag(FLT_NATS);
	}
#!endif
	return;
}

# RTPProxy control
route[NATMANAGE] {
#!ifdef WITH_NAT
	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("co");

	if (is_request()) {
		if (!has_totag()) {
			if(t_is_branch_route()) {
				add_rr_param(";nat=yes");
			}
		}
	}
	if (is_reply()) {
		if(isbflagset(FLB_NATB)) {
			add_contact_alias();
		}
	}
#!endif
	return;
}

# URI update for dialog requests
route[DLGURI] {
#!ifdef WITH_NAT
	if(!isdsturiset()) {
		handle_ruri_alias();
	}
#!endif
	return;
}




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