[Freeswitch-users] SDP BUNDLE support

Sat Jun 15 01:19:36 UTC 2019

WebRTC is a moving target and even if FS does not support bundle it can
support WebRTC in other ways but you need to be on 1.8.

ClueCon is coming in August.  https://cluecon.com there will be separate
panels on both FreeSWITCH and WebRTC and there is a lot to learn there.

On Fri, Jun 14, 2019 at 6:13 PM Sowmya Venkat <sowmyatv at gmail.com> wrote:

> Thanks Lawrence,  yes you are right, the latest draft version is 54, by
> mistake I pasted the wrong link.
>
> I understand it's a draft, I would still like to clarify with FS if there
> is a plan in the roadmap to support BUNDLE, as I understand all browsers
> support it already and bundling is much more efficient..
>
> Thanks
> Sowmya
>
> On Fri, Jun 14, 2019, 10:12 PM Lawrence Conroy <lconroy at insensate.co.uk>
> wrote:
>
>> Hi There,
>>  Where do I begin?
>> 1.  I sure hope that fS doesn't implement an expired draft.
>> What you mean is <
>> https://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-bundle-negotiation/
>> >
>> i.e.,the latest version is -54, *not* -39.
>> (BTW, it's in the RFC editor queue, so it won't expire in 4 days time ;)
>>
>> 2. That latest version is held in the RFC editor queue (for 6 months so
>> far) due to a snafu on the references it makes.
>>
>> From much experience, therein lies the problem ...
>> It's unwise for developers to implement a draft (anyone can write one and
>> get it published, on any topic, including "communications carried by little
>> green men").
>> That means Devs typically wait until the RFC is published.
>> Otherwise it's like trying to nail smoke to the wall; until it's an RFC,
>> it can change (and all your code ends up targetting the wrong spec).
>>
>> In this case RFC publication is blocked until people get together with
>> the rfc-editor to sort out the snafus.
>> So ... it's not really down to the fS devs -- it's down to the IETF
>> document shepherd, draft authors & the rfc-editor.
>>
>> The document shepherd in this case (Flemming Adreasen) may know when he
>> thinks this will be fixed.
>> see <https://datatracker.ietf.org/wg/mmusic/about/> for the details.
>>
>> I did all that by checking the IETF web sites (not the fastest in the
>> world, but they do work). It's easy.
>> Any other stuff on the interwebs is "non-canon" :)
>>
>> best regards,
>>   Lawrence
>>
>> On 14 Jun 2019, at 06:43, Sowmya Venkat <sowmyatv at gmail.com> wrote:
>> > Hi,
>> >  I am trying to understand the expected behavior of latest FS when the
>> client sends SDP offer with RTP BUNDLE and uses the exact same IP + port
>> combination for both audio and video media components. Is BUNDLE (
>> https://tools.ietf.org/html/draft-ietf-mmusic-sdp-bundle-negotiation-39)
>> supported by FS? If not, can you pls let me know the when it is planned to
>> add the support for the same?
>> >
>> > I am seeing the below errors in fs_cli. Can you pls confirm if the
>> issue is because BUNDLE is not supported by FS?
>> >
>> > 2019-06-12 07:01:03.143578 [DEBUG]   switch_core_media.c:3236 alternate
>> payload received (received 96, expecting 111)
>> > 2019-06-12 07:01:03.143578 [WARNING]  switch_core_media.c:3259 Could
>> not change to payload type 96, ignoring...
>> > 2019-06-12 06:52:36.463638 [ERR] mod_opus.c:921 Decoder Error: buffer
>> too small fs:4080 plc:false!
>> > 2019-06-12 06:52:36.463638 [ERR] switch_core_io.c:633 Codec RAW Signed
>> Linear (16 bit) decoder error! [9]
>> > 2019-06-12 06:52:36.543581 [ERR] mod_opus.c:921 Decoder Error:
>> corrupted stream fs:4080 plc:false!
>> >
>> > Here are the relevant SDP m and a lines from the client's offer:
>> >
>> > a=group:BUNDLE audio video
>> > ....
>> > m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
>> > a=mid:audio
>> > a=rtcp-mux
>> > a=rtpmap:111 opus/48000/2
>> > a=candidate:1 1 udp 2013266431 35.162.237.109 38673 typ host
>> > ....
>> > m=video 9 UDP/TLS/RTP/SAVPF 96 98 100 102 127 125 108
>> > a=mid:video
>> > a=rtcp-mux
>> > a=rtpmap:96 VP8/90000
>> > a=candidate:1 1 udp 2013266431 35.162.237.109 38673 typ host
>> >
>> > Thanks
>> > Sowmya
>> >
>> >
>> >
>> _________________________________________________________________________
>> >
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>>
>> _________________________________________________________________________
>>
>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>> services.
>> Build your next product on our scalable cloud platform.
>>
>> Join our online community to chat in real time
>> https://signalwire.community
>>
>> Professional FreeSWITCH Services
>> sales at freeswitch.com
>> https://freeswitch.com
>>
>> Official FreeSWITCH Sites
>> https://freeswitch.com/oss
>> https://freeswitch.org/confluence
>> https://cluecon.com
>>
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>
> _________________________________________________________________________
>
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> services.
> Build your next product on our scalable cloud platform.
>
> Join our online community to chat in real time
> https://signalwire.community
>
> Professional FreeSWITCH Services
> sales at freeswitch.com
> https://freeswitch.com
>
> Official FreeSWITCH Sites
> https://freeswitch.com/oss
> https://freeswitch.org/confluence
> https://cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> https://freeswitch.com

-- 
Anthony Minessale II
Founder, FreeSWITCH.
http://freeswitch.com

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