[SR-Users] Terminate dialogs on [websocket:closed]
Daniel-Constantin Mierla
miconda at gmail.com
Wed Feb 10 22:01:45 CET 2016
Hello,
if the client UA does GRUU (iirc, jssip supports that, sip.js started as
a fork of jssip) and you enable that in Kamailio (see registrar module),
it should be enough that the client UA reconnects on websocket for SIP
singaling, no need for re-INVITE, unless the IP/ports for media stream
change. The BYE or other requests within dialog will be routed properly
to the new contact address after the reconnect.
But you have to check with your UA and see how it behaves in order to
build the proper solution on server side.
Cheers,
Daniel
On 10/02/16 20:57, mayamatakeshi wrote:
> Hi Daniel,
> originally I was thinking that i should just terminate or allow the
> dialog module to terminate the call if websocket:closed happens.
> However, I believe the sip.js library I am using in the client will do
> a re-INVITE after websocket connection is reestablished so that
> requests from the other end will come to the right socket so I am
> thinking in just reduce the dlg timeout and if the re-INVITE happens,
> reset it to its usual value.
> I have not checked yet if sip.js does this re-INVITE but I believe it
> is reasonable to assume it does and if it doesn't I think it should
> not be difficult to patch it to do so.
>
> I will check the other alternatives you mentioned.
> Thank you.
>
> Regards,
> Takeshi
>
> On Wed, Feb 10, 2016 at 10:23 PM, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
> Hello Takeshi,
>
> so do you expect a re-INVITE after the websocket connection is closed?
>
> You may want to check also the dialog keepalive features, it might
> just be enough to enable it, but of course it may take longer to
> detect when one leg of the call is gone.
>
> Also, typically with PSTN gateways works to set session timers
> (see sst module).
>
> Cheers,
> Daniel
>
>
> On 10/02/16 12:27, mayamatakeshi wrote:
>> Hi Daniel,
>>
>> Yes, that will solve it.
>> Then when i get the in-dialog INVITE i can revert the lifetime
>> back to the original value.
>> Thanks and regards,
>> Takeshi
>>
>> On Wed, Feb 10, 2016 at 5:59 PM, Daniel-Constantin Mierla
>> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>> Hello,
>>
>> perhaps you can just lower the dialog lifetime in the
>> websocket event route, then dialog will take care of sending
>> the BYEs, without the need to store additional information in
>> hash table.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 09/02/16 23:37, mayamatakeshi wrote:
>>> Hello,
>>> I am using module websocket and it works very well.
>>> However I would like to send BYE to the other end if event
>>> [websocket:closed] happens.
>>> From the docs I can see websocket module itself doesn't
>>> provide for this.
>>>
>>> I was considering doing something like this:
>>> - use module htable to match $si:$sp to dialogs
>>> - use event_route[dialog:start] to insert dialog info to
>>> my htable under $si:$sp of Websocket side of the call
>>> - use event_route[dialog:end] to remove dialog info from
>>> htable
>>> - use event_route[websocket:closed] to iterate over
>>> entries in the htable under key $si:$sp and call dlg_get()
>>> and dlg_bye().
>>>
>>> Obs: in the above, there is a risk of losing some dialogs as
>>> insertion in htable cannot be done atomically, but I am fine
>>> with it as it it not expected to happen as WebSocket users
>>> would only infrequently generate simultaneous calls.
>>>
>>> However before going with this, I would like to ask for
>>> other possible approaches.
>>>
>>> Regards,
>>> Takeshi
>>>
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>> sr-users at lists.sip-router.org
>>> <mailto:sr-users at lists.sip-router.org>
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>>
>> --
>> Daniel-Constantin Mierla
>> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda
>> Book: SIP Routing With Kamailio - http://www.asipto.com
>> http://miconda.eu
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
>> mailing list
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>>
>>
>
> --
> Daniel-Constantin Mierla
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda
> Book: SIP Routing With Kamailio - http://www.asipto.com
> http://miconda.eu
>
>
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu
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