[SR-Users] bad transport for sips uri?

[Alex Balashov]

No, it’s not “actually” dead in that sense. 

—
Sent from mobile, with due apologies for brevity and errors.

> On Feb 21, 2019, at 10:01 PM, David Cunningham <dcunningham at voisonics.com> wrote:
> 
> 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 at 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 at es8.example.com" because it doesn't
>> > specify port 5061?
>> > Thank you in advance.
>> > 
>> > Session Initiation Protocol (ACK)
>> >     Request-Line: ACK sips:105 at 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 at es8.example.com
>> > >;tag=Nf5GG!Orq!MSmGfeu66F03F2114df82b
>> >         To: <sips:105 at es8.example.com:5061>;tag=as7a72b209
>> >         Call-ID: 222222 at 50.78.yy.yy
>> >         CSeq: 94679 ACK
>> >         Contact: <sips:111111 at 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
>> 
>> > _______________________________________________
>> > Kamailio (SER) - Users Mailing List
>> > sr-users at lists.kamailio.org
>> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>> 
>> 
>> -- 
>> 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/
>> 
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> 
> 
> -- 
> David Cunningham, Voisonics Limited
> http://voisonics.com/
> USA: +1 213 221 1092
> New Zealand: +64 (0)28 2558 3782
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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