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Re: [tor-bugs] #25985 [Obfuscation/Snowflake]: Add AMP cache as another domain fronting option with Google

#25985: Add AMP cache as another domain fronting option with Google
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 Reporter:  twim                   |          Owner:  (none)
     Type:  project                |         Status:  new
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
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Comment (by dcf):

 The way I picture this working for snowflake is, we add a new route to the
 broker, like `/amp/client`. It will work exactly like the existing
 `/client` route (which is where clients POST their ICE offer)--with the
 only difference being that `/amp/client` will wrap the response in the
 additional AMP markup. The client side will have to know how to strip off
 the extra markup. It's probably not very much work.
 https://gitweb.torproject.org/pluggable-
 transports/snowflake.git/tree/broker/broker.go?id=10ad59fc9d26900ded6456f50ea6adf4cb58be9d#n146

 Here's a diagram of how it works now:
 https://www.bamsoftware.com/papers/thesis/#fig:snowflake-rendezvous
 Imagine an AMP node between the client and broker. In Step 1, instead of
 domain fronting, the client will just do a normal request for
 !https://www.google.com/amp/snowflake.example.com or whatever. In Step 3,
 the broker will append the extra AMP markup. Everything else is the same.

 twim, can you give a brief guide on what is needed to set up AMP? I
 presume you at least need a Google account; is it something you set up in
 the Google Cloud Platform? Is there a fee? I've seen different kinds of
 AMP URLs, like
 https://www.google.com/amp/s/amp.reddit.com/r/OutOfTheLoop/comments/56euau/whats_with_google_amp_quite_annoyingly_being_used/
   https://amp-reddit-com.cdn.ampproject.org/
   https://amp.reddit.com/
 Do you know what the difference between all these URL styles is? Are they
 basically interchangeable? The first one looks like the best, if we can
 use it.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25985#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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