[SR-Users] Request Timeouts
swwilkins at mitre.org
Wed Feb 7 13:59:01 CET 2018
Thank you again for looking at this.
I am including a snippet of the last part of the Wireshark dump that occurs right before the dropped call. There are many of the very same INFO Request going from Asterisk to Kamailio; there is also another INFO request in the middle that was different (but only occurs a few times). The INFO Requests do have ;tag in the To header.
I noticed that Asterisk replies '200 OK' to INFO request from Kamailio but Kamailio does not send '200 OK' for INFO requests from Asterisk. I did try forcing Kamailio to send a '200 OK' when it gets an INFO request, but that did not work.
You will see that there are a bunch of INFO request to Kamailio from Asterisk, then Kamailio sends a 408 Request Timeout , then Asterisk send a BYE and call drops shortly after.
From: sr-users [mailto:sr-users-bounces at lists.kamailio.org] On Behalf Of Alex Balashov
Sent: Tuesday, February 6, 2018 8:34 PM
To: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: Re: [SR-Users] Request Timeouts
On Wed, Feb 07, 2018 at 01:31:43AM +0000, Wilkins, Steve wrote:
> Hi Alex Thank you!, there is so much to learn.
> As you suggested, I looked at the CSeq and the Timeout is from an INFO
> message going from Kamailio to Asterisk. Asterisk immediately sends
> "BYE" back to Kamailio and then the call drops. This is why I was
> wondering if I needed to do anything for INFO messages. "I think"
> this is why some calls are dropping. Does this make any since?
It does. Is the INFO message in-dialog or out-of-dialog?
 Does it have a ;tag attribute in the To header?
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
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