<div dir="ltr"><div>I see, so I can't tell the device manufacturer that they're wrong to use it then. <br></div><div><br></div><div>So does anyone know what about the packet could be giving the "bad transport for sips uri" message? Perhaps the combination of "sips" and lack of "transport=tls"?</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 22 Feb 2019 at 16:07, Alex Balashov <<a href="mailto:abalashov@evaristesys.com">abalashov@evaristesys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">No, it’s not “actually” dead in that sense. <br><br><div id="gmail-m_809476717155391983AppleMailSignature" dir="ltr">—<div>Sent from mobile, with due apologies for brevity and errors.</div></div><div dir="ltr"><br>On Feb 21, 2019, at 10:01 PM, David Cunningham <<a href="mailto:dcunningham@voisonics.com" target="_blank">dcunningham@voisonics.com</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div>Hi Alex,</div><div><br></div><div>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?</div><div><br></div><div>We certainly don't have end-to-end security as Kamailio is acting as a proxy between the device and Asterisk.</div><div><br></div><div>Thanks for your advice!</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 22 Feb 2019 at 15:08, Alex Balashov <<a href="mailto:abalashov@evaristesys.com" target="_blank">abalashov@evaristesys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
The sips: scheme is effectively dead, since the RFC requires that a<br>
sips: next-hop guarantee end-to-end security, which it cannot. It has<br>
been effectively replaced by use of ;transport=TLS.<br>
<br>
On Fri, Feb 22, 2019 at 02:58:05PM +1300, David Cunningham wrote:<br>
<br>
> Hello all,<br>
> <br>
> We're having an issue with Kamailio not processing an ACK and hope someone<br>
> can help. A PCAP shows that Kamailio is receiving the ACK, and we believe<br>
> these log messages are directly related to it:<br>
> <br>
> Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: tm [ut.h:279]:<br>
> uri2dst2(): ERROR: uri2dst: bad transport for sips uri: 1<br>
> Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: tm [t_fwd.c:1777]:<br>
> t_forward_nonack(): ERROR: t_forward_nonack: failure to add branches<br>
> Feb 21 10:54:01 hostname /sbin/kamailio[15854]: ERROR: sl [sl_funcs.c:387]:<br>
> sl_reply_error(): ERROR: sl_reply_error used: Unresolvable destination<br>
> (478/SL)<br>
> <br>
> The ACK is as follows. It's from telephone 111111 which is using TLS, which<br>
> Kamailio listens for on port 5061.<br>
> Does anyone know which URI has the bad transport as per the error above?<br>
> Might it be the From URI "<a href="mailto:sips%3A111111@es8.example.com" target="_blank">sips:111111@es8.example.com</a>" because it doesn't<br>
> specify port 5061?<br>
> Thank you in advance.<br>
> <br>
> Session Initiation Protocol (ACK)<br>
> Request-Line: ACK sips:<a href="mailto:105@70.42.xx.xx" target="_blank">105@70.42.xx.xx</a>:5070 SIP/2.0<br>
> Message Header<br>
> Via: SIP/2.0/TLS 50.78.yy.yy:5061;branch=z9hG4bK741961203<br>
> Route: <sips:70.42.xx.xx:5061;transport=tls;r2=on;lr=on><br>
> Route: <sips:70.42.xx.xx;r2=on;lr=on><br>
> From: ES8 Test 102 <<a href="mailto:sips%3A111111@es8.example.com" target="_blank">sips:111111@es8.example.com</a><br>
> >;tag=Nf5GG!Orq!MSmGfeu66F03F2114df82b<br>
> To: <<a href="http://sips:105@es8.example.com:5061" rel="noreferrer" target="_blank">sips:105@es8.example.com:5061</a>>;tag=as7a72b209<br>
> Call-ID: <a href="mailto:222222@50.78.yy.yy" target="_blank">222222@50.78.yy.yy</a><br>
> CSeq: 94679 ACK<br>
> Contact: <sips:<a href="mailto:111111@50.78.yy.yy" target="_blank">111111@50.78.yy.yy</a>:5061;transport=tls><br>
> Max-Forwards: 70<br>
> User-Agent: ewb2bua/15.3.0<br>
> Content-Length: 0<br>
> <br>
> -- <br>
> David Cunningham, Voisonics Limited<br>
> <a href="http://voisonics.com/" rel="noreferrer" target="_blank">http://voisonics.com/</a><br>
> USA: +1 213 221 1092<br>
> New Zealand: +64 (0)28 2558 3782<br>
<br>
> _______________________________________________<br>
> Kamailio (SER) - Users Mailing List<br>
> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
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<br>
<br>
-- <br>
Alex Balashov | Principal | Evariste Systems LLC<br>
<br>
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) <br>
Web: <a href="http://www.evaristesys.com/" rel="noreferrer" target="_blank">http://www.evaristesys.com/</a>, <a href="http://www.csrpswitch.com/" rel="noreferrer" target="_blank">http://www.csrpswitch.com/</a><br>
<br>
_______________________________________________<br>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail-m_809476717155391983gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>David Cunningham, Voisonics Limited<br><a href="http://voisonics.com/" target="_blank">http://voisonics.com/</a><br>USA: +1 213 221 1092<br>New Zealand: +64 (0)28 2558 3782</div></div></div></div></div></div></div></div></div></div></div>
</div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>Kamailio (SER) - Users Mailing List</span><br><span><a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a></span><br><span><a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a></span><br></div></blockquote></div>_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" rel="noreferrer" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>David Cunningham, Voisonics Limited<br><a href="http://voisonics.com/" target="_blank">http://voisonics.com/</a><br>USA: +1 213 221 1092<br>New Zealand: +64 (0)28 2558 3782</div></div></div></div></div></div></div></div></div></div></div>