[Freeswitch-users] Re-establish connection within a SIP session

[Michael Jerris]

This is not a feature in any of the sip js stacks I know of, and I'm not quite sure how it would be implemented on top of sip.  As Brian said, this is a feature in verto.

> On Mar 27, 2015, at 3:28 PM, Mateus Dalepiane <mdalepiane at gmail.com> wrote:
> 
> Hello Brian,
> 
> Thank you for the answer. We will consider using Verto in the future.
> 
> Right now we will have to stick with WebRTC over SIP, we are using SIP.js for that.
> 
> I ran some more tests and once the Websocket connection drops and is re-established,
> even if we send a re-INVITE, FS identifies it as belonging to the old call, and
> responds to it, after a while FS hangs up the call reporting a NORMAL_TEMPORARY_FAILURE.
> 
> If the Websocket is not disconnected, I can see that FS sends an re-INVITE to the client after a while,
> so I guess that what is happening is that when FS tries to send this re-INVITE it realizes that the old connection
> was closed and hangs up the call.
> 
> My question now is: Why FS does not update the connection information for the call once the re-INVITE from
> the new connection is received?
> 
> 2015-03-26 15:15 GMT-03:00 Brian West <brian at freeswitch.org <mailto:brian at freeswitch.org>>:
> Have you taken a look at Verto?
> 
> On Thu, Mar 26, 2015 at 12:08 PM, Mateus Dalepiane <mdalepiane at gmail.com <mailto:mdalepiane at gmail.com>> wrote:
> We have the following scenario: The session is established between WebRTC and FreeSWITCH using Websockets.
> 
> Once the session is established, if the websocket connection drops the media continues to flow util FreeSWITCH tries to send a re-INVITE to the client. At this point it realizes that the connection was closed and hangs up the call.
> 
> Now, if the websocket connection drops and is re-established, would it be possible to inform FreeSWITCH that the new connection should be used for the previously established session?
> 
> If the WebRTC client sends an INVITE message with the old session parameters, FreeSWITCH will be able to understand that it belongs to the old session?

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