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slightlylate's profile
Alex Russell
Alex Russell
Alex Russell
@slightlylate

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Alex Russell

@slightlylate

Chrome Project 🐡 & Web Standards TL; Blink API OWNER Named PWAs w/ @phae; probably making her ☕ DMs open. Tweets my own; press@google.com for official comms.

San Francisco, The Internet
infrequently.org
Joined December 2010

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    1. Jeffrey Yasskin‏ @jyasskin 13 Oct 2018
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      Replying to @jyasskin @johnwilander and

      3/3 Does that help at all?

      2 replies 0 retweets 2 likes
    2. John Wilander‏ @johnwilander 14 Oct 2018
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      Replying to @jyasskin @slightlylate @SmoothAsSkippy

      Thanks. Sorry, I don’t know the technical definitions of these terms. Can we do a concrete example? Say we have ampcache.example hosting news.example’s content. Will packaging make sure that the browser treats news.example as first party and ampcache.example as third party?

      1 reply 0 retweets 0 likes
    3. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @johnwilander @slightlylate @SmoothAsSkippy

      1/2 The request for ampcache.example/news.example.package will send first party cookies for ampcache.example. (Since it doesn't yet know it's getting a package.)

      1 reply 0 retweets 1 like
    4. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @jyasskin @johnwilander and

      2/2 Then as the browser loads the resource and realises it's a package, there's the equivalent of a redirect to news.example (though without any connection to news.example or cookies sent anywhere), after which ampcache.example is now third-party.

      1 reply 0 retweets 1 like
    5. John Wilander‏ @johnwilander 14 Oct 2018
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      Replying to @jyasskin @slightlylate @SmoothAsSkippy

      Got it. Thanks! This redirect, is it (intended to be) handled as a real redirect in the browser, creating a new context? Is ampcache.example in control of the URL to an extent where a tracking ID can be added there and later picked up when ampcache.example is third-party?

      1 reply 0 retweets 0 likes
    6. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @johnwilander @slightlylate @SmoothAsSkippy

      Yes, news.example gets it's own context. (Ampcache.example didn't get a JavaScript context at all.) We're discussing whether and how the news.example context should know how it was distributed.

      1 reply 0 retweets 1 like
    7. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @jyasskin @johnwilander and

      E.g. we might expose "You were distributed via ampcache.example/news.package." We can't provide the content of an arbitrary header, although I think I haven't written that constraint down in a useful place.

      1 reply 0 retweets 0 likes
    8. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @jyasskin @johnwilander and

      Oh, and the URL is exactly what news.example signed. Any changes could be an attack vector even ignoring tracking.

      1 reply 0 retweets 2 likes
    9. John Wilander‏ @johnwilander 14 Oct 2018
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      Replying to @jyasskin @slightlylate @SmoothAsSkippy

      This is starting to sound like a significant step forward for privacy and the AMP cache. If that's the case, you should highlight it as a feature (maybe you have and I've missed it) and make it a goal of packaging, i.e. no added tracking capabilities for the cache provider.

      1 reply 0 retweets 7 likes
    10. Jeffrey Yasskin‏ @jyasskin 14 Oct 2018
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      Replying to @johnwilander @slightlylate @SmoothAsSkippy

      It's great to hear you say that. I've added a reminder to follow up on this once I'm back from parental leave in November. I'm probably going to need to ask you for more detail on what constitutes a tracking capability.

      1 reply 0 retweets 4 likes
      Alex Russell‏ @slightlylate 14 Oct 2018
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      Replying to @jyasskin @johnwilander @SmoothAsSkippy

      The design makes cache providers strictly less powerful than traditional CDNs as they can't rewrite content without origin assistance. That's very much a goal

      1:43 PM - 14 Oct 2018
      • 4 Likes
      • Rick Byers Devin Mullins Yoav Weiss avery🍞harnish
      1 reply 0 retweets 4 likes
        1. New conversation
        2. Alex Russell‏ @slightlylate 14 Oct 2018
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          Replying to @slightlylate @jyasskin and

          Note that cache providers still know what's in the cache -- they can decode packages like anyone else -- so it's time-shifting TLS's integrity guarantee but not confidentiality

          1 reply 0 retweets 2 likes
        3. Kenji Baheux‏ @KenjiBaheux 15 Oct 2018
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          Replying to @slightlylate @jyasskin and

          John, while Jeffrey is on paternity leave, I and Alex will be more than happy to catch up at TPAC and IETF 103 if you are around.

          1 reply 0 retweets 2 likes
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