Hi Anshuman,
for such call, could you check if before sending the BYE (or any other
in-dialog request) the TCP connection is still up (check with netstat) -
it may be the case where the TCP conn (opened by INVITE) is terminated
and opensips cannot open a connection behind NAT back to the client.
Regards,
Bogdan
Anshuman S. Rawat wrote:
Thanks Bogdan. That fixed most of the problems but not all.
I have a scenario where I make calls without registering (transport is
TCP) so the contact in INVITE carries local/private IP address.
Result: I cannot receive in-dailog requests after call in setup. It
tried to fix this by doing this -
if (method == INVITE) {
# Required for TCP - Anshuman
xlog("L_INFO", "INVITE: Check for NAT");
if (nat_uac_test("1")) {
xlog("L_INFO", "NAT: FIXING CONTACT in
INVITE");
fix_nated_contact();
};
};
This is followed by processing by the lcr module -
if ((method == INVITE) && !(to_uri=~"paral...@.+")){
# do lcr
# xlog("Message :$tu");
if (!load_contacts()){
sl_send_reply("500","Unable to load
contacts");
exit;
}else{
if (next_contacts()){
t_on_failure("1");
}#else{
# sl_send_reply("404","Not found ");
# exit;
# }
}
append_hf("P-hint: lcr applied\r\n");
}else{
append_hf("P-hint: usrloc applied\r\n");
}
The above does not fix the 'Contact' header in the INVITE (i.e.
Contact still carries private IP address).
Can anyone help me to identify what's wrong with this picture?
Regards,
Anshuman
----- Original Message ----- From: "Bogdan-Andrei Iancu"
<[email protected]>
To: "OpenSIPS users mailling list" <[email protected]>
Sent: Thursday, December 09, 2010 5:30 PM
Subject: Re: [OpenSIPS-Users] 477 send failed with TCP
Hi Anshuman,
do "fix_nated_register()" at registration time (before save("location"))
if uac_nat_test() function returns true (if nat was detected) - see the
nathelper module for more details:
http://www.opensips.org/html/docs/modules/1.6.x/nathelper.html
Regards,
Bogdan
Anshuman S. Rawat wrote:
Hi,
I am trying to use TCP on OpenSIPS 1.6 (with PJSIP as client). Client
successfully registers and sends keep-alives to keep the TCP
connection open. However, all call attempts (or any other request)
fail with a '477 Send Failed'. The logs show this -
Dec 8 06:58:18 ip-208-109-177-46 /usr/local/sbin/opensips[15463]:
ERROR:core:tcp_blocking_connect: timeout 10 s elapsed from 10 s
Dec 8 06:58:18 ip-208-109-177-46 /usr/local/sbin/opensips[15463]:
ERROR:core:tcpconn_connect: tcp_blocking_connect failed
Dec 8 06:58:18 ip-208-109-177-46 /usr/local/sbin/opensips[15463]:
ERROR:core:tcp_send: connect failed
Dec 8 06:58:18 ip-208-109-177-46 /usr/local/sbin/opensips[15463]:
ERROR:tm:msg_send: tcp_send failed
Client is behind a NAT so registers with contact containing the
private IP address. It seems that OpenSIPS is trying to connect to the
private IP address contained in the REGISTER request rather than
reusing the connection the request arrived on.
Is this a bug? Or is there a way to configure it to use the
established connection?
Thanks,
Anshuman
------------------------------------------------------------------------
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--
Bogdan-Andrei Iancu
OpenSIPS Bootcamp
15 - 19 November 2010, Edison, New Jersey, USA
www.voice-system.ro
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_______________________________________________
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--
Bogdan-Andrei Iancu
OpenSIPS Event - expo, conf, social, bootcamp
2 - 4 February 2011, ITExpo, Miami, USA
www.voice-system.ro
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