Rob, could you attach the Chrome SDP please?

-Ekr



On Sun, Jul 28, 2013 at 4:37 AM, Rob Manson <[email protected]> wrote:

> Thanks Adam...that would be awesome 8)
>
> I'm running a bunch of SDP mangling tests this week to see if I can
> isolate this further and learn more about the interop challenges so if I
> work out anything useful about this specific ERR I'll post it here.
>
> roBman
>
>
>
> On 28/07/13 18:49, Adam Roach wrote:
>
>> To be clear, all of the "SDP Parsing Error" messages here are merely
>> warnings, not failures. On a first examination of the code path that an
>> get you to "Could not negotiate media lines; cause = ERR", I'm pretty
>> sure the situation you ran into below was a DTLS negotiation failure.
>> One of the things I plan to do is comb through everywhere we send back
>> the rather obtuse "cause = ERR" and change it to be more illuminating.
>>
>> /a
>>
>> On 7/27/13 01:54, Ethan Hugg wrote:
>>
>>> Hi Rob,
>>>
>>> Firefox and Chrome are not directly compatible.  apprtc adapts them a bit
>>> to get them to work together.  You can copy what they do from files like
>>> this:
>>> https://apprtc.appspot.com/js/**adapter.js<https://apprtc.appspot.com/js/adapter.js>
>>> https://apprtc.appspot.com/js/**main.js<https://apprtc.appspot.com/js/main.js>
>>>
>>> The bug for Bundle is here -
>>> https://bugzilla.mozilla.org/**show_bug.cgi?id=784491<https://bugzilla.mozilla.org/show_bug.cgi?id=784491>
>>>
>>> Though, how some of this should work exactly is still being discussed in
>>> the IETF standards groups MMUSIC and RTCWeb which meet next week in
>>> Berlin.
>>>
>>> -EH
>>>
>>>
>>>
>>> On Fri, Jul 26, 2013 at 3:55 PM, Rob Manson<[email protected]>  wrote:
>>>
>>>  Hi,
>>>>
>>>> I couldn't see that anyone had raised this anywhere and it seems
>>>> unrelated
>>>> to this topic on discuss-webrtc
>>>> https://groups.google.com/**forum/#!topic/discuss-webrtc/**dLsbz6Xwxc0<https://groups.google.com/forum/#!topic/discuss-webrtc/dLsbz6Xwxc0>
>>>>  - so I
>>>> thought I'd share the error message I'm receiving.
>>>>
>>>> If you'd like me to raise this as a bug please let me know...but thought
>>>> it might be better first as just an informational post.
>>>>
>>>> So setting up a video call between the latest Chrome (28.0.1500.71
>>>> (Official Build 209842) ) and Firefox 22 & Nightly (25.0a1
>>>> (2013-07-25)) on
>>>> Linux I get this SDP parsing error message in Firefox.
>>>>
>>>> "Could not negotiate media lines; cause = ERR | SDP Parsing Error:
>>>> Warning: Group attribute type unsupported (BUNDLE). | SDP Parsing Error:
>>>> Warning: Unrecognized attribute (msid-semantic) | SDP Parsing Error:
>>>> Warning: Unrecognized attribute (ice-options) | SDP Parsing Error:
>>>> Warning:
>>>> Unrecognized attribute (extmap) | SDP Parsing Error: Warning: Numeric
>>>> token
>>>> for mid attribute not found | SDP Parsing Error: Warning: Invalid named
>>>> events specified for fmtp attribute. | SDP Parsing Error: Warning:
>>>> Unrecognized attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized
>>>> attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized attribute
>>>> (ssrc) | SDP Parsing Error: Warning: Unrecognized attribute (ssrc) | SDP
>>>> Parsing Error: Warning: Unrecognized attribute (ice-options) | SDP
>>>> Parsing
>>>> Error: Warning: Unrecognized attribute (extmap) | SDP Parsing Error:
>>>> Warning: Numeric token for mid attribute not found | SDP Parsing Error:
>>>> Warning: Unrecognized attribute (ssrc) | SDP Parsing Error
>>>>   : Warning: Unrecognized attribute (ssrc) | SDP Parsing Error: Warning:
>>>> Unrecognized attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized
>>>> attribute (ssrc) "
>>>>
>>>> However, in the exact same app I can setup a video call between two
>>>> Firefox tabs or separate browsers so it's definitely working OK with
>>>> Firefox SDP.
>>>>
>>>> If you'd like a full copy of the Chrome SDP and related signaling please
>>>> let me know...but I'm sure you've got a good collection of this already
>>>> 8)
>>>>
>>>> roBman
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>>
>>
>> --
>> Adam Roach
>> Principal Platform Engineer
>> [email protected]
>> +1 650 903 0800 x863
>>
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