I registered for  RTCPeerConnection Plan B SDP Semantics   and everything 
working fine in windows and android chrome browser.
But  in android webView it showing Origin trial "UNKNOWN 
ValidTokenNotProvided"
Does it support in android system webview?

On Friday, July 30, 2021 at 2:25:18 AM UTC+5:30 mike...@chromium.org wrote:

> Hi Abhi,
>
> Assuming you're looking for the deprecation trial ("reverse origin trial") 
> for Plan B SDP semantics, 
> https://developer.chrome.com/origintrials/#/view_trial/3892235977954951169 
> should be the right link.
>
> (there's no visual differentiation between regular and deprecation trials 
> in the UI, but maybe that would be a nice feature to add)
>
> later,
> Mike
>
> On 7/29/21 3:44 AM, 'Abhi Shanmu' via blink-dev wrote:
>
> Hi, 
>
> I am unable to find reverse origin trial listed in this page for me to 
> register. 
> https://developer.chrome.com/origintrials/#/trials/active
> How can I register my domains for the reverse origin trial?
> Thanks,
> Abhi
> On Thursday, July 8, 2021 at 5:00:06 PM UTC+1 Yash Gogia wrote:
>
>> Hi,
>>
>> The guide that talks about origin trials, mentions that there is a 
>> built-in safeguard that automatically disables an experimental feature 
>> globally if its usage exceeds 0.5% of all Chrome page loads. 
>>
>> Source: 
>> https://github.com/GoogleChrome/OriginTrials/blob/gh-pages/developer-guide.md#3-what-happens-if-a-large-site-such-as-a-google-service-starts-depending-on-an-experimental-feature
>>
>> I would like to understand if this applies to reverse origin trials as 
>> well. From chrome status, it looks like the usage is hovering around 0.2% 
>> already and I am sure many more websites would add the trial as the August 
>> date for Chrome 93 approaches. A confirmation that this automatic cutoff 
>> would not apply to the reverse origin trial would give us a lot more 
>> confidence.
>>
>> Thanks,
>> Yash 
>> On Friday, 5 March 2021 at 23:18:03 UTC+5:30 Joe Medley wrote:
>>
>>> Thank you!
>>>
>>> Joe Medley | Technical Writer, Chrome DevRel | jme...@google.com | 
>>> 816-678-7195 <(816)%20678-7195>
>>> *If an API's not documented it doesn't exist.*
>>>
>>>
>>> On Fri, Mar 5, 2021 at 6:47 AM Henrik Boström <hb...@webrtc.org> wrote:
>>>
>>>> OK, I filed https://www.chromestatus.com/feature/5823036655665152
>>>>
>>>> On Tuesday, March 2, 2021 at 3:45:06 PM UTC+1 Joe Medley wrote:
>>>>
>>>>> To be clear, Chrome Status isn't extra. It's a tool for creating 
>>>>> intents and it tries to help you get everything needed for that. The 
>>>>> option 
>>>>> for Feature deprecation contains a stage for a reverse origin trial. 
>>>>>
>>>>> [image: image.png]
>>>>>
>>>>> Joe Medley | Technical Writer, Chrome DevRel | jme...@google.com | 
>>>>> 816-678-7195 <(816)%20678-7195>
>>>>> *If an API's not documented it doesn't exist.*
>>>>>
>>>>>
>>>>> On Tue, Mar 2, 2021 at 6:40 AM Joe Medley <jme...@google.com> wrote:
>>>>>
>>>>>> "Should I create an entry even for the Reverse Origin Trial?" 
>>>>>>
>>>>>> Yes, you should.
>>>>>> Joe Medley | Technical Writer, Chrome DevRel | jme...@google.com | 
>>>>>> 816-678-7195 <(816)%20678-7195>
>>>>>> *If an API's not documented it doesn't exist.*
>>>>>>
>>>>>>
>>>>>> On Thu, Feb 18, 2021 at 2:05 AM Henrik Boström <hb...@chromium.org> 
>>>>>> wrote:
>>>>>>
>>>>>>> *Contact emails*
>>>>>>> hb...@chromium.org, h...@chromium.org
>>>>>>>
>>>>>>> *Spec*
>>>>>>> WebRTC is a W3C Recommendation and multiple IETF standards:
>>>>>>> https://www.w3.org/2021/01/pressrelease-webrtc-rec.html.en
>>>>>>> https://www.w3.org/TR/webrtc/
>>>>>>> https://tools.ietf.org/html/rfc8829
>>>>>>>
>>>>>>> The Session Description Protocol (SDP) used by WebRTC currently has 
>>>>>>> two implementations:
>>>>>>>
>>>>>>>    - "Unified Plan", the spec-compliant SDP format implemented by 
>>>>>>>    all browsers. 
>>>>>>>    - "Plan B", the non-standard SDP format that does not have a 
>>>>>>>    spec, is deprecated but not yet removed and is only implemented in 
>>>>>>>    Chromium-based browsers. JavaScript applications have access to it 
>>>>>>> by using 
>>>>>>>    a non-standard API. 
>>>>>>>
>>>>>>> *Summary*
>>>>>>> We want to remove the non-standard SDP format, "Plan B", from 
>>>>>>> Chromium. Removal dates have already been announced, but in order to 
>>>>>>> aid 
>>>>>>> applications from migrating from Plan B to Unified Plan and to ensure 
>>>>>>> we 
>>>>>>> can keep the deadlines we have set, a Reverse Origin Trial is desired 
>>>>>>> to 
>>>>>>> give applications that opt-in more time to migrate.
>>>>>>>
>>>>>>> Deadlines and rationale for Reverse Origin Trial were provided in 
>>>>>>> the intent to deprecate 
>>>>>>> <https://groups.google.com/u/3/a/chromium.org/g/blink-dev/c/IY2amIigFFs>.
>>>>>>>  
>>>>>>> The target dates are:
>>>>>>>
>>>>>>>    - 
>>>>>>>    
>>>>>>>    M89 (Stable in February, 2021): Deprecation warning is added in 
>>>>>>>    the developer console.
>>>>>>>    - 
>>>>>>>    
>>>>>>>    M93 (Stable in August, 2021): Plan B is removed, with the option 
>>>>>>>    to extend this deadline by opting-in to a Reverse Origin Trial.
>>>>>>>    - 
>>>>>>>    
>>>>>>>    M96 (Stable in January, 2022): The extended deadline ends 
>>>>>>>    and Plan B is removed for everybody.
>>>>>>>    
>>>>>>> I would like to make the Reverse Origin Trial available as of M90 or 
>>>>>>> M91 (when this CL 
>>>>>>> <https://chromium-review.googlesource.com/c/chromium/src/+/2671784> 
>>>>>>> lands).
>>>>>>>
>>>>>>> *Goals for experimentation*
>>>>>>> Unblock Plan B removal.
>>>>>>>
>>>>>>> *Experiment timeline*
>>>>>>> M90-M96.
>>>>>>>
>>>>>>> *Any risk when the experiment finishes?*
>>>>>>> If Plan B is removed while still in use, some applications would 
>>>>>>> experience incompatibility issues when attempting to set up audio or 
>>>>>>> video 
>>>>>>> channels, especially in multi-participant conferencing setups. 1:1 
>>>>>>> calling 
>>>>>>> will still work for some applications.
>>>>>>>
>>>>>>> *Ongoing technical constraints*
>>>>>>> N/A. There were some Unified Plan bugs and performance issues 
>>>>>>> discovered that have been addressed in M90.
>>>>>>>
>>>>>>> *Debuggability*
>>>>>>> When using Plan B you will get a deprecation warning in the JS 
>>>>>>> console. It will look different depending on if you have opted in to 
>>>>>>> the 
>>>>>>> Reverse Origin Trial.
>>>>>>>
>>>>>>> *Will this feature be supported on all five Blink platforms 
>>>>>>> supported by Origin Trials (Windows, Mac, Linux, Chrome OS, and 
>>>>>>> Android)?*
>>>>>>> Yes.
>>>>>>>
>>>>>>> *Link to entry on the feature dashboard 
>>>>>>> <https://www.chromestatus.com/features>*
>>>>>>> N/A, Unified Plan was shipped several years ago. Should I create an 
>>>>>>> entry even for the Reverse Origin Trial?
>>>>>>>
>>>>>>> -- 
>>>>>>> You received this message because you are subscribed to the Google 
>>>>>>> Groups "blink-dev" group.
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>>>>>>> send an email to blink-dev+...@chromium.org.
>>>>>>> To view this discussion on the web visit 
>>>>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2abac3cf-72ee-43c6-b248-c60e625ee881n%40chromium.org
>>>>>>>  
>>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2abac3cf-72ee-43c6-b248-c60e625ee881n%40chromium.org?utm_medium=email&utm_source=footer>
>>>>>>> .
>>>>>>>
>>>>>> -- 
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>
>

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