[Freeswitch-users] Media delay when calling FS from a WebRTC client

Fri Mar 14 23:02:26 MSK 2014

I think its a bug that it picks those vmware interfaces.  They should skip
those somehow.
I think its a security violation the way it blindly discloses your entire
network topology by sending candidates on every interface you have with not
config.

On Fri, Mar 14, 2014 at 2:49 PM, Oleg Stolyar <olegstolyar at gmail.com> wrote:

> Follow-up in case someone else runs into this problem.
>
> I tried my test on another machine and there was no delay before
> establishing the connection with JsSip (this is the first delay I reported
> that had to do with gathering ICE candidates).  It turns out that I had
> VMWare Network adapters on my computer.  Once I disabled them, the delay
> disappeared.
>
> Of course the second (post-dial) delay that Anthony explained is still
> there but it's short enough to not be a show-stopper for me.
>
>
> On Thu, Mar 13, 2014 at 9:29 PM, Anthony Minessale <
> anthony.minessale at gmail.com> wrote:
>
>> It just sleeps whenever the channel answers so not much different.
>> On Mar 13, 2014 7:07 PM, "Oleg Stolyar" <olegstolyar at gmail.com> wrote:
>>
>>> Thanks Anthony!!!
>>>
>>> I am using the "sleep" command in my dialplan after "answer".  Is "answer_delay"
>>> preferrable?
>>>
>>>
>>> On Thu, Mar 13, 2014 at 4:54 PM, Anthony Minessale <
>>> anthony.minessale at gmail.com> wrote:
>>>
>>>> Its a combo of how many nic you have that are up with IP on them and
>>>> the dtls handshake time which is 500ms to 1500 ms depending on the speed of
>>>> the exchange which cannot be shortened.  You cannot send media at all until
>>>> you have dtls up, this is a known limitation of dtls and they chose to do
>>>> it that way.
>>>>
>>>> WebRTC is not spending a lot of time pondering legacy telephony and
>>>> post-dial-delay etc.   Its centric on a peer-2-peer model and not even
>>>> giving proper attention to use cases like FS where many clients are talking
>>>> to one meta server with many WebRTC connections.  Maybe when the
>>>> drunken-buzz of trying to change the paradigm wears off, they will have
>>>> some bloody marys and realize you can still change it while keeping the
>>>> things that matter in tact that the entire human race has grown to expect
>>>> (like communication channels establishing in a quick timeframe).
>>>>
>>>> Until then you can set up a catch-all extension at the top of your
>>>> dialplan with:
>>>> <action application="set" data="answer_delay=2500"/>
>>>>
>>>> or add it as a global to vars.xml
>>>>
>>>> This adds a 2500 ms sleep after answer to consume the time of the dtls
>>>> negotiation.
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Mar 13, 2014 at 6:29 PM, Oleg Stolyar <olegstolyar at gmail.com>wrote:
>>>>
>>>>> Thanks Markus, I might do that but first I want to get both JsSip and
>>>>> smpl5 working in my environment and confirm that simpl5 is faster for me.
>>>>>
>>>>>
>>>>> On Thu, Mar 13, 2014 at 1:17 PM, mbo <mbodbg at gmx.net> wrote:
>>>>>
>>>>>> I’ve posted an issue regarding that to the jsip user group some time
>>>>>> ago, but did not follow up yet.
>>>>>>
>>>>>> https://groups.google.com/forum/#!topic/jssip/RSAycYMD9Q0
>>>>>>
>>>>>> Maybe it makes sense to continue the discussion here as this problem
>>>>>> is not related to freeswitch, maybe some Jssip developers can help if you
>>>>>> post also details about your issue there.
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> Markus
>>>>>>
>>>>>>
>>>>>> Am 13.03.2014 um 19:31 schrieb Oleg Stolyar <olegstolyar at gmail.com>:
>>>>>>
>>>>>> Thanks Michael!
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, Mar 13, 2014 at 11:19 AM, Michael Jerris <mike at jerris.com>wrote:
>>>>>>
>>>>>>> jssip didnt, at least at the time we made that site, support
>>>>>>> firefox, not sure if that has changed.  sipml5 gets the candidates sent out
>>>>>>> much quicker than jssip does, but jssip is much simpler and nicer to use in
>>>>>>> other ways.
>>>>>>>
>>>>>>> On Mar 13, 2014, at 1:56 PM, Oleg Stolyar <olegstolyar at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>> https://webrtc.freeswitch.org on chrome redirects to a JsJip demo.
>>>>>>>
>>>>>>> Same URL on Firefox redirects to smpl5 demo,
>>>>>>>
>>>>>>> so I was wondering if there is a reason for that and if the
>>>>>>> comparisons between JsSip and smpl5 were done on the same browser.
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Mar 13, 2014 at 10:45 AM, Michael Jerris <mike at jerris.com>wrote:
>>>>>>>
>>>>>>>> huh?
>>>>>>>>
>>>>>>>> On Mar 13, 2014, at 12:50 PM, Oleg Stolyar <olegstolyar at gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>> On the same browser?
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Mar 13, 2014 at 9:43 AM, Michael Jerris <mike at jerris.com>wrote:
>>>>>>>>
>>>>>>>>> sipml5 seems to handle this part much much better than jssip.
>>>>>>>>>
>>>>>>>>> On Mar 13, 2014, at 12:34 PM, Oleg Stolyar <olegstolyar at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> So, this is WebRTC browser behavior, right?  Not something
>>>>>>>>> specific to JsSip?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Thu, Mar 13, 2014 at 9:20 AM, mbo <mbodbg at gmx.net> wrote:
>>>>>>>>>
>>>>>>>>>> I also have seen that it sometimes takes up to 10 seconds before
>>>>>>>>>> the websocket message is sent, depending on the router I’m behind, but I’ve
>>>>>>>>>> no solution for it yet.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Am 13.03.2014 um 16:58 schrieb Oleg Stolyar <
>>>>>>>>>> olegstolyar at gmail.com>:
>>>>>>>>>>
>>>>>>>>>> Thanks guys!  Another related question.  It's not FreeSWITCH but
>>>>>>>>>> perhaps someone here knows.
>>>>>>>>>>
>>>>>>>>>> There is a delay in JsSip demo when gathering candidates.  The
>>>>>>>>>> delay occurs after the last candidate is received and before sending the
>>>>>>>>>> websocket message.  From looking around the web I found that it may be due
>>>>>>>>>> to the WebRTC trying to get more candidates and only sending the message
>>>>>>>>>> when that effort times out.
>>>>>>>>>>
>>>>>>>>>> Does anyone know if there is a way around it?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Thu, Mar 13, 2014 at 6:27 AM, Brian West <brian at freeswitch.org
>>>>>>>>>> > wrote:
>>>>>>>>>>
>>>>>>>>>>> I don’t think you can speed this up, if you try DTLS from FS to
>>>>>>>>>>> FS its instant, no delays but no matter what browser you selected there is
>>>>>>>>>>> some delay.
>>>>>>>>>>> --
>>>>>>>>>>> Brian West
>>>>>>>>>>> brian at freeswitch.org
>>>>>>>>>>> FreeSWITCH Solutions, LLC
>>>>>>>>>>> PO BOX 2531
>>>>>>>>>>> Brookfield, WI 53008-2531
>>>>>>>>>>> Twitter: @FreeSWITCH , @briankwest
>>>>>>>>>>> http://www.freeswitchbook.com
>>>>>>>>>>> http://www.freeswitchcookbook.com
>>>>>>>>>>>
>>>>>>>>>>> T: +1.918.420.9001  |  F: +1.918.420.9002  |  M: +1.918.424.WEST
>>>>>>>>>>> iNUM: +883 5100 1420 9001
>>>>>>>>>>> ISN: 410*543
>>>>>>>>>>> Skype:briankwest
>>>>>>>>>>> PGP Key: http://www.bkw.org/key.txt (AB93356707C76CED)
>>>>>>>>>>>
>>>>>>>>>>> On Mar 13, 2014, at 4:29 AM, mbo <mbodbg at gmx.net> wrote:
>>>>>>>>>>>
>>>>>>>>>>> > we also face that problem. Is there any solution to speed up
>>>>>>>>>>> DTLS handshake so far?
>>>>>>>>>>> >
>>>>>>>>>>> > Thanks
>>>>>>>>>>> >
>>>>>>>>>>> > Markus
>>>>>>>>>>> >
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>>> Professional FreeSWITCH Consulting Services:
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>>>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>>>
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>>
>>>>>>>>>>> Official FreeSWITCH Sites
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>>>>>>>>>>>
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>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>>>> consulting at freeswitch.org
>>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>>
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>>
>>>>>>>>>> Official FreeSWITCH Sites
>>>>>>>>>> http://www.freeswitch.org
>>>>>>>>>> http://wiki.freeswitch.org
>>>>>>>>>> http://www.cluecon.com
>>>>>>>>>>
>>>>>>>>>> FreeSWITCH-users mailing list
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>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>>>> consulting at freeswitch.org
>>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>>
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>>
>>>>>>>>>> Official FreeSWITCH Sites
>>>>>>>>>> http://www.freeswitch.org
>>>>>>>>>> http://wiki.freeswitch.org
>>>>>>>>>> http://www.cluecon.com
>>>>>>>>>>
>>>>>>>>>> FreeSWITCH-users mailing list
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>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _________________________________________________________________________
>>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>>> consulting at freeswitch.org
>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>
>>>>>>>>> Official FreeSWITCH Sites
>>>>>>>>> http://www.freeswitch.org
>>>>>>>>> http://wiki.freeswitch.org
>>>>>>>>> http://www.cluecon.com
>>>>>>>>>
>>>>>>>>> FreeSWITCH-users mailing list
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _________________________________________________________________________
>>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>>> consulting at freeswitch.org
>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>
>>>>>>>>> Official FreeSWITCH Sites
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>>>>>>>>> http://wiki.freeswitch.org
>>>>>>>>> http://www.cluecon.com
>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>> consulting at freeswitch.org
>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>
>>>>>>>> 
>>>>>>>> 
>>>>>>>>
>>>>>>>> Official FreeSWITCH Sites
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>>>>>>>>
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>> consulting at freeswitch.org
>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>
>>>>>>>> 
>>>>>>>> 
>>>>>>>>
>>>>>>>> Official FreeSWITCH Sites
>>>>>>>> http://www.freeswitch.org
>>>>>>>> http://wiki.freeswitch.org
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>>>>>>>>
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>>>>>>>>
>>>>>>>
>>>>>>> _________________________________________________________________________
>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>> consulting at freeswitch.org
>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> 
>>>>>>> 
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
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>>>>>>> http://wiki.freeswitch.org
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>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _________________________________________________________________________
>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>> consulting at freeswitch.org
>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> 
>>>>>>> 
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
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>>>>>>>
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>>>>>>>
>>>>>>
>>>>>> _________________________________________________________________________
>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>> consulting at freeswitch.org
>>>>>> http://www.freeswitchsolutions.com
>>>>>>
>>>>>> 
>>>>>> 
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> http://www.freeswitch.org
>>>>>> http://wiki.freeswitch.org
>>>>>> http://www.cluecon.com
>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _________________________________________________________________________
>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>> consulting at freeswitch.org
>>>>>> http://www.freeswitchsolutions.com
>>>>>>
>>>>>> 
>>>>>> 
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> http://www.freeswitch.org
>>>>>> http://wiki.freeswitch.org
>>>>>> http://www.cluecon.com
>>>>>>
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> 
>>>>> 
>>>>>
>>>>> Official FreeSWITCH Sites
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>>>>>
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬
>>>>
>>>> ☞ http://freeswitch.org/  ☞ http://cluecon.com/  ☞
>>>> http://twitter.com/FreeSWITCH
>>>> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+
>>>> <http://freeswitch.org/g+>*
>>>>
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>>>>
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> 
>>>> 
>>>>
>>>> Official FreeSWITCH Sites
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>>>>
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>>>>
>>>
>>> _________________________________________________________________________
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>>>
>>> 
>>> 
>>>
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>>>
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>>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
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>>
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>>
>>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
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>
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>
>

-- 
Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬

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http://twitter.com/FreeSWITCH
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