2 Mar
2005
2 Mar
'05
8:48 p.m.
What is wrong here?
beeplove(a)projukee.com -> behind NAT outside ser using Kphone
mahfuz(a)projuktee.com -> behind another NAT outside ser using Windows
Messenger
Could anybody show me where I am doing wrong?
SipClient: Sending: 14:39:54.899
--------------------------------
MESSAGE sip:mahfuz@projuktee.com SIP/2.0
Via: SIP/2.0/TCP 10.51.0.161;branch=z9hG4bK5FEAA78B;alias
CSeq: 7658 MESSAGE
To: <sip:mahfuz@projuktee.com>
Content-Type: text/plain;charset=UTF-8
From: "Mohammad Khan" <sip:beeplove@projuktee.com>;tag=5208EA62
Call-ID: 1457236851(a)10.51.0.161
Content-Length: 9
User-Agent: kphone/4.1.0
Contact: "Mohammad Khan" <sip:beeplove@10.51.0.161;transport=tcp>
helloooo
SipClient: Sending to 'sip.projuktee.com:5060' (TCP)
SipClient: Receiving message...
SipClient: Received: 14:40:05.024
---------------------------------
SIP/2.0 477 Unfortunately error on sending to next hop occurred (477/TM)
Via: SIP/2.0/TCP
10.51.0.161;branch=z9hG4bK5FEAA78B;alias;rport=38973;received=66.105.xxx.yyy
CSeq: 7658 MESSAGE
To: <sip:mahfuz@projuktee.com>;tag=76b43a3b01465a3cbddc081c4176c4c9-3a18
From: "Mohammad Khan" <sip:beeplove@projuktee.com>;tag=5208EA62
Call-ID: 1457236851(a)10.51.0.161
Server: Sip EXpress router (0.9.0 (i386/linux))
Content-Length: 0
Warning: 392 192.168.71.2:5060 "Noisy feedback tells: pid=9204
req_src_ip=66.105.xxx.yyy req_src_port=38973
in_uri=sip:mahfuz@projuktee.com
out_uri=sip:192.168.1.54:10745;transport=tcp via_cnt==1"
ser.cfg
if (nat_uac_test("3")) {
# Allow RR-ed requests, as these may indicate that
# a NAT-enabled proxy takes care of it; unless it is
# a REGISTER
if (method == "REGISTER" || !
search("^Record-Route:")) {
xlog("L_DBG", "LOG: Someone trying to register
from private IP, rewriting\n");
# This will work only for user agents that
support symmetric
# communication. We tested quite many ofhem and
majority is
# smart enough to be symmetric. In some phones
it takes a configuration
# option. With Cisco 7960, it is called
NAT_Enable=Yes, with kphone it is
# called "symmetric media" and "symmetric
signalling".
fix_nated_contact(); # Rewrite contact with
source IP of signalling
if (method == "INVITE" || method == 'NOTIFY') {
fix_nated_sdp("1"); # Add
direction=active to SDP
};
force_rport(); # Add rport parameter to topmost Via
setflag(6); # Mark as NATed
};
};
# if the request is for other domain use UsrLoc
# (in case, it does not work, use the following command
# with proper names and addresses in it)
if (uri=~"projuktee.com") {
if (method=="REGISTER") {
if (!www_authorize("projuktee.com",
"subscriber")) {
www_challenge("projuktee.com", "1");
break;
};
save("location");
break;
};
if (method=="PUBLISH") {
if (!t_newtran()) {
xlog("L_DBG", "newtran error\n");
sl_reply_error();
};
handle_publish("registrar");
break;
};
lookup("aliases");
if (!uri=~"projuktee.com") {
append_hf("P-hint: outbound alias\r\n");
route(1);
break;
};
# native SIP destinations are handled using our USRLOC DB
if (!lookup("location")) {
sl_send_reply("404", "Not Found");
break;
};
};
append_hf("P-hint: usrloc applied\r\n");
route(1);
}
route[1]
{
# !! Nathelper
#if (uri=~"[@:](192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.)"
&& !search("^Route:")){
# sl_send_reply("479", "We don't forward to private IP
>
addresses");
# break;
#};
# if client or server know to be behind a NAT, enable relay
if (isflagset(6)) {
force_rtp_proxy();
};
##################
# NAT processing of replies; apply to all transactions (for example,
# re-INVITEs from public to private UA are hard to identify as
# NATed at the moment of request processing); look at replies
#t_on_reply("1");
if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") {
fix_nated_contact();
force_rtp_proxy();
# otherwise, is it a transaction behind a NAT and we did not
# know at time of request processing ? (RFC1918 contacts)
} else if (nat_uac_test("1")) {
fix_nated_contact();
};
################
# send it out now; use stateful forwarding as it works reliably
# even for UDP2TCP
if (!t_relay()) {
sl_reply_error();
};
}