Re: [quicwg/base-drafts] Send complete SETTINGS (#2972)

Lucas Pardue <> Tue, 27 August 2019 18:56 UTC

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From: Lucas Pardue <>
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Subject: Re: [quicwg/base-drafts] Send complete SETTINGS (#2972)
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LPardue commented on this pull request.

 A server MAY accept 0-RTT and subsequently provide different settings in its
 SETTINGS frame. If 0-RTT data is accepted by the server, its SETTINGS frame MUST
 NOT reduce any limits or alter any values that might be violated by the client
-with its 0-RTT data.  The server MAY omit settings from its SETTINGS frame which
-are unchanged from the initial value.
+with its 0-RTT data.  The server MUST include all settings which differ from
+their default values.  If a server accepts 0-RTT, but then sends a SETTINGS
+frame which reduces a setting the client understands or omits a value that was
+previously specified to have a non-default value, this MUST be treated as a
+connection error of type HTTP_SETTINGS_ERROR.


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