13 Jul
2004
13 Jul
'04
2:44 a.m.
Jan,
See below. Also, always CC the list so that other people can help you.
Zeus
>
> Flag 4 is set when the caller is behind NAT.
> Flag 5 is set when the callee is behind NAT.
Would you be so kind and tell me how do you test
messages to
set these
flags?
/*
Check for UAC behind NAT
This is done by nat_uac_test("7") which checks for
1. RFC 1918 address in Contact - 01
2. different src_ip and Via header - 02
3. RFC1918 in Top Via - 04
*/
if (nat_uac_test("3")) { /* 1 + 2 = 3 */
xlog("L_NOTICE", "%rm: Client is behind NAT\n");
setflag(4); /* Flag it's a nated R-URI */
if (method=="REGISTER" || !search("^Record-Route:"))
{
force_rport();
if (!method=="MESSAGE") { /* MESSAGE has no
Contact header, see RFC 3428 */
fix_nated_contact();
};
};
} else {
xlog("L_NOTICE", "%rm: Client is not behind a
NAT\n");
};
... Other checking ...
if (method=="REGISTER") {
if (isflagset(4)) {
setflag(5); /* Turn on NAT Ping and flag it as a
NAT callee */
};
if (!save("location")) {
xlog("L_ERR", "%rm: Failed\n");
sl_reply_error();
};
break;
};
Thanks
Jan