forwarded to mailing-list ....
-------- Original Message -------- Subject: Re: [SR-Users] CRLF from Kamailio server Date: Mon, 26 Nov 2012 16:34:26 +0100 From: Daniel-Constantin Mierla miconda@gmail.com Reply-To: miconda@gmail.com To: Klaus Darilion klaus.mailinglists@pernau.at
Hello,
I haven't checked actually the parts for tcp, but recently I added the feature of removing the location records if there is no reply to OPTIONS keepalives in nathelper, and it was only for UDP. Also, I think the nat ping is 4 bytes (zeros) or so.
Might be another option from tcp, like: http://www.kamailio.org/wiki/cookbooks/3.3.x/core#tcp_keepalive
Cheers, Daniel
On 11/26/12 3:54 PM, Klaus Darilion wrote:
IIRC tcp_crlf_ping is only about the Ping-Pong mechanism: client sends PING=CRLF, server responds with PONG=CRLFCRLF.
Thus, server should only response on client CRLF. Further the PONG is always double-CRLF.
So I suspected it is NAT keepalive - maybe someone added NAT-keep-alive for TCP :-)
regards Klaus
On 26.11.2012 11:05, Daniel-Constantin Mierla wrote:
Hello,
this might be actually related to tcp connection keepalive:
http://www.kamailio.org/wiki/cookbooks/3.3.x/core#tcp_crlf_ping
IIRC, nathelper pings only udp contacts.
Cheers, Daniel
On 11/26/12 10:54 AM, Klaus Darilion wrote:
On 26.11.2012 05:13, Dmytro Bogovych wrote:
Greetings. May anyone give me advice? I have working Kamailio with TLS. It is used by iOS softphone - i developed own one based on resiprocate. All signalling is TLS. Almost everything is fine.
But looks kamailio sends CRLF messages sometimes. If it happens when softphone is in background mode - it is killed by iOS (as iOS prohibits too often awakes from background mode).
How I can disable these messages? I see natping_interval = 30 and ping_nated_only=0 Should I set natping_interval to zero ?
Either set the interval to 0 or set ping_nated_only=1 and make sure to not set the NAT flag for the iphone clients.
A problem may be firewalls/NAT between the iPhone and Kamailio, as they may drop the TCP connection is there is no activity for too long time.
regards Klaus
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
-
Klaus Darilion