[OpenSIPS-Users] ERROR topology_hiding_match() and WSS

[Bogdan-Andrei Iancu]

Hi,

Just to update the list with the outcome of this investigation.

The problem is generated by an ambiguity in WS/WSS specs (RFC 7118) 
which state that a WSS client must advertise "transport=ws" - this is 
really confusing for a SIP proxy which has no clue on which transport 
(WS or WSS) to use to reach the user.

Most of the WSS UAC decided to disobey the IETF specs and to actually 
advertise wss. See the case for SIPjs:
https://github.com/onsip/SIP.js/issues/97 
<https://github.com/onsip/SIP.js/issues/97>

After updating the SIP.js client, the call flow works like a charm.

Best regards,

Bogdan-Andrei Iancu
   OpenSIPS Founder and Developer
   http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
   http://www.opensips.org/events/Summit-2017Amsterdam.html

On 04/26/2017 02:03 PM, Bogdan-Andrei Iancu wrote:
> Thank you Dragomir,
>
> So, there is an existing connection to your browser.
>
> Please redo the list_tcp_conns and send me the capture of the BYE 
> request received by OpenSIPS.
>
> Best regards,
> Bogdan-Andrei Iancu
>    OpenSIPS Founder and Developer
>    http://www.opensips-solutions.com
>
> OpenSIPS Summit May 2017 Amsterdam
>    http://www.opensips.org/events/Summit-2017Amsterdam.html
> On 04/25/2017 04:35 PM, Dragomir Haralambiev wrote:
>> Here is connection list before send BYE
>>
>> [root at dev opensips]# opensipsctl fifo list_tcp_conns
>> Connection::  ID=1 Type=wss State=0 Source=<IP:SIP.JS>0:59562 
>> Destination=<IP:Opensips>:10062 Lifetime=2017-04-25 16:31:14
>>
>>
>> 2017-04-25 11:37 GMT+03:00 Bogdan-Andrei Iancu <bogdan at opensips.org>:
>>
>>     Hi Dragomir,
>>
>>     So, the problem is about the BYE. Just before sending BYE from
>>     Zoiper, please run on your opensips:
>>         opensipsctl fifo list_tcp_conns
>>
>>     Lets see if your SIP.JS still has a connection to OpenSIPS at
>>     that point.
>>
>>     Best regards,
>>
>>     Bogdan-Andrei Iancu
>>        OpenSIPS Founder and Developer
>>        http://www.opensips-solutions.com <http://www.opensips-solutions.com>
>>
>>     OpenSIPS Summit May 2017 Amsterdam
>>        http://www.opensips.org/events/Summit-2017Amsterdam.html
>>     <http://www.opensips.org/events/Summit-2017Amsterdam.html>
>>
>>     On 04/25/2017 12:14 AM, Dragomir Haralambiev wrote:
>>>     Hi Bogdan,
>>>     Thanks for the detailed and comprehensive answer.
>>>     Zoiper talking (connection is established) with SIP.JS
>>>     Zoiper ---(over UDP)--> Opensips --(over WSS)---> SIP.JS
>>>     Why not possible Opensips send BYE to SIP.JS over established
>>>     connection?
>>>     Why all is OK when SIP.JS send BYE?
>>>     I need help to setup Opensips to solve this problem.
>>>     Best regards,
>>>     Dragomir
>>>     2017-04-24 17:47 GMT+03:00 Bogdan-Andrei Iancu
>>>     <bogdan at opensips.org <mailto:bogdan at opensips.org>>:
>>>
>>>         Hi, Same question, same answer - see
>>>         http://lists.opensips.org/pipermail/users/2017-April/036925.html
>>>         Regards,
>>>
>>>         Bogdan-Andrei Iancu
>>>            OpenSIPS Founder and Developer
>>>            http://www.opensips-solutions.com
>>>         <http://www.opensips-solutions.com>
>>>
>>>         OpenSIPS Summit May 2017 Amsterdam
>>>            http://www.opensips.org/events/Summit-2017Amsterdam.html
>>>         <http://www.opensips.org/events/Summit-2017Amsterdam.html>
>>>
>>>         On 04/21/2017 07:24 PM, Dragomir Haralambiev wrote:
>>>>         Hello,
>>>>         I have problem with "topology_hiding_match()" and WSS.
>>>>         Zoiper ---(send BYE)--> Opensips --(can not relay to)--->
>>>>         SIP.JS
>>>>         Here part ot script:
>>>>         if (has_totag()) {
>>>>         if (topology_hiding_match()) {
>>>>         t_relay();
>>>>         exit;
>>>>         }
>>>>         ...
>>>>         Opensips receive BYE. When execute "t_relay()" give follow
>>>>         ERRORS:
>>>>         INFO:core:probe_max_sock_buff: using snd buffer of 416 kb
>>>>         INFO:core:init_sock_keepalive: TCP keepalive enabled on
>>>>         socket 23
>>>>         ERROR:core:tcp_connect_blocking: timeout 99195 ms elapsed
>>>>         from 100000 s
>>>>         ERROR:proto_ws:ws_sync_connect: tcp_blocking_connect failed
>>>>         ERROR:proto_ws:ws_connect: connect failed
>>>>         ERROR:proto_ws:proto_ws_send: connect failed
>>>>         ERROR:tm:msg_send: send() for proto 5 failed
>>>>         ERROR:tm:t_forward_nonack: sending request failedscheduled
>>>>         Where is problem?
>>>>
>>>>         _______________________________________________
>>>>         Users mailing list
>>>>         Users at lists.opensips.org <mailto:Users at lists.opensips.org>
>>>>         http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>         <http://lists.opensips.org/cgi-bin/mailman/listinfo/users>
>>>
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