Hi Alex,
Is it actually dead, as in unsupported by the RFC or Kamailio? If so would
that explain why Kamailio gives that error and doesn't appear to process it?
We certainly don't have end-to-end security as Kamailio is acting as a
proxy between the device and Asterisk.
Thanks for your advice!
On Fri, 22 Feb 2019 at 15:08, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
Hi,
The sips: scheme is effectively dead, since the RFC requires that a
sips: next-hop guarantee end-to-end security, which it cannot. It has
been effectively replaced by use of ;transport=TLS.
On Fri, Feb 22, 2019 at 02:58:05PM +1300, David Cunningham wrote:
Hello all,
We're having an issue with Kamailio not processing an ACK and hope
someone
can help. A PCAP shows that Kamailio is receiving
the ACK, and we believe
these log messages are directly related to it:
Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: tm [ut.h:279]:
uri2dst2(): ERROR: uri2dst: bad transport for sips uri: 1
Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: tm [t_fwd.c:1777]:
t_forward_nonack(): ERROR: t_forward_nonack: failure to add branches
Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: sl
[sl_funcs.c:387]:
sl_reply_error(): ERROR: sl_reply_error used:
Unresolvable destination
(478/SL)
The ACK is as follows. It's from telephone 111111 which is using TLS,
which
Kamailio listens for on port 5061.
Does anyone know which URI has the bad transport as per the error above?
Might it be the From URI "sips:111111@es8.example.com" because it
doesn't
specify port 5061?
Thank you in advance.
Session Initiation Protocol (ACK)
Request-Line: ACK sips:105@70.42.xx.xx:5070 SIP/2.0
Message Header
Via: SIP/2.0/TLS 50.78.yy.yy:5061;branch=z9hG4bK741961203
Route: <sips:70.42.xx.xx:5061;transport=tls;r2=on;lr=on>
Route: <sips:70.42.xx.xx;r2=on;lr=on>
From: ES8 Test 102 <sips:111111@es8.example.com
;tag=Nf5GG!Orq!MSmGfeu66F03F2114df82b
To: <sips:105@es8.example.com:5061>;tag=as7a72b209
Call-ID: 222222(a)50.78.yy.yy
CSeq: 94679 ACK
Contact: <sips:111111@50.78.yy.yy:5061;transport=tls>
Max-Forwards: 70
User-Agent: ewb2bua/15.3.0
Content-Length: 0
--
David Cunningham, Voisonics Limited
http://voisonics.com/
USA: +1 213 221 1092
New Zealand: +64 (0)28 2558 3782
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--
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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