Re: [quicwg/base-drafts] Limit RCID state (#3547)

martinduke <notifications@github.com> Wed, 01 April 2020 19:26 UTC

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Subject: Re: [quicwg/base-drafts] Limit RCID state (#3547)
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@martinduke commented on this pull request.



> @@ -1069,6 +1069,15 @@ to cease using the connection IDs when requested can result in connection
 failures, as the issuing endpoint might be unable to continue using the
 connection IDs with the active connection.
 
+An endpoint SHOULD limit the number of outstanding RETIRE_CONNECTION_ID frames
+to bound the necessary state. In order to allow a peer to retire all previously
+issued connection IDs, the limit on the number of outstanding
+RETIRE_CONNECTION_IDs SHOULD be at least the active_connection_id_limit. An

"unacknowledged" would also include long-lost packets, technically. I agree with the congestion control observation, but I'm not sure how it impacts the behavior. I'll _always_ withhold RCIDs that are cwnd-blocked; it's a restriction on RCIDs in flight independent of this one.

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