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Re: [quicwg/base-drafts] suggest easier way of initiating graceful shutdown from the server-side (#3341)

Martin Thomson <notifications@github.com> Thu, 16 January 2020 03:23 UTC

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From: Martin Thomson <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] suggest easier way of initiating graceful shutdown from the server-side (#3341)
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I agree with that.  Stacks aren't obligated to offer any option for fine control over MAX_STREAMS, or any means of introspecting into the value.

I would make another change though.  As a suggestion, this text doesn't need normative force.

> An endpoint that is attempting to gracefully shut down a connection can send a GOAWAY frame with a value set to the maximum possible value (2^62-4 for servers, 2^62-1 for clients).  This ensures that the peer stops creating new requests or pushes.  After allowing time for any in-flight requests (at least one round-trip time), the endpoint can send another GOAWAY frame with an updated value.  In the case that a server does not process some requests, this allows clients to efficiently learn which requests can be retried.

All assuming we go with the suggested outcome of #3129.  Adjust accordingly.

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