Hi,

I’m using OpenSER v1.3.1 and sipping does not work with my configuration. Here is a sample:

loadmodule "usrloc.so"

loadmodule "nathelper.so"

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

#modparam("nathelper", "ping_nated_only", 1)

modparam("nathelper", "sipping_bflag", 7)

modparam("nathelper", "sipping_from", "sip:pinger@cmovil.net")

modparam("nathelper", "received_avp", "$avp(i:801)")

modparam("registrar", "received_avp", "$avp(i:801)")

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

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

route {

if (!mf_process_maxfwd_header("10")) {

sl_send_reply("483","Too Many Hops");

exit;

}

# for clients behind nats

if ( nat_uac_test("1") ) {

if (method=="REGISTER") {

fix_nated_register();

setbflag(6);

setbflag(7);

} else if ( method=="SUBSCRIBE" || method=="PUBLISH” ) {

fix_nated_contact();

setbflag(6);

setbflag(7);

};

};

...

}

...

TCP clients register without problems and NAT users are identified properly. Routing for them works fine and so on, but I cannot see any ping packet leaving OpenSER to keep the TCP connection alive. Is there something missing?

Thank in advance.

Pablo