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Re: [quicwg/base-drafts] When to send the SETTINGS frame (#2945)

Nick Harper <notifications@github.com> Thu, 01 August 2019 17:38 UTC

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Subject: Re: [quicwg/base-drafts] When to send the SETTINGS frame (#2945)
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I think it was @davidben's idea to put SETTINGS in EncryptedExtensions, but I'm a huge fan of that idea.

If we move SETTINGS to EE, this makes it much easier for the client to handle NewSessionTickets, especially for a QUIC stack designed for multiple applications (not just HTTP/3). With SETTINGS in EE, the QUIC layer has everything it needs when it wants to cache a NST for 0-RTT resumption, whereas if it needs to wait for a SETTINGS frame sometime later in application data, it both needs to consult the application layer when it saves a NST, and the answer from the application layer could be "please wait, I don't have all of the bits I need yet".

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