Re: [quicwg/base-drafts] Remove timing guidance (#3474)

[Mike Bishop <[e-mail]>]

@MikeBishop commented on this pull request.



> +An endpoint might need to stop accepting previously issued connection IDs in
+certain circumstances.  Such an endpoint can cause its peer to retire connection
+IDs by sending a NEW_CONNECTION_ID frame with an increased Retire Prior To
+field.  The endpoint SHOULD continue to accept the previously issued connection
+IDs until they are retired by the peer.  If the endpoint can no longer process
+the indicated connection IDs, it MAY close the connection.
+
+Upon receipt of an increased Retire Prior To field, the peer MUST stop using the
+corresponding connection IDs and retire them with RETIRE_CONNECTION_ID frames
+before adding the newly provided connection ID to the set of active connection
+IDs. This ordering allows an endpoint that has already supplied its peer with as
+many connection IDs as allowed by the active_connection_id_limit transport
+parameter to replace those connection IDs with new ones as necessary.  Failure
+to retire the connection IDs promptly when requested can result in connection
+failures, as the issuing endpoint might be unable to continue using the
+connection IDs with the active connection.

Both, actually.  If you use them and the remote routing infrastructure no longer recognizes them, you'll get a (potentially valid) Stateless Reset.  However, if you stop using them without retiring them, the peer MAY close the connection on you.

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