Re: [quicwg/base-drafts] Required state for retaining unacked RETIRE_CONNECTION_ID frames is unbound (#3509)

Marten Seemann <> Tue, 31 March 2020 02:51 UTC

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Subject: Re: [quicwg/base-drafts] Required state for retaining unacked RETIRE_CONNECTION_ID frames is unbound (#3509)
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I'd prefer #3553 over #3547. I can't really see why it would more disruptive than #3547.

The problem with #3547 is that it will likely work find in *most* cases, but there are some corner case (when the ACKs for RETIRE_CONNECTION_ID frames are lost), in which things will break. Properly accounting for these corner cases requires some non-trivial tracking logic in order to avoid risking the connection being closed with a CONNECTION_ID_LIMIT_ERROR.

On the other hand, #3553 seems to be conceptually simpler. I'd rather implement a few changes to my frame parser than introduce some ACK-tracking logic.

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