Re: [quicwg/base-drafts] Add sequence number to NCID frame (#1821)

ianswett <> Tue, 02 October 2018 17:06 UTC

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Subject: Re: [quicwg/base-drafts] Add sequence number to NCID frame (#1821)
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ianswett commented on this pull request.

> @@ -3285,8 +3292,10 @@ zero-length Destination Connection ID MUST treat receipt of a NEW_CONNECTION_ID
 frame as a connection error of type PROTOCOL_VIOLATION.
 Transmission errors, timeouts and retransmissions might cause the same
-NEW_CONNECTION_ID frame to be received multiple times. Receipt of the same
-frame multiple times MUST NOT be treated as a connection error.
+NEW_CONNECTION_ID frame to be received multiple times.  Receipt of the same
+frame multiple times MUST NOT be treated as a connection error.  A receiver can
+use the sequence number supplied in the NEW_CONNECTION_ID frame to identify new
+connection IDs from old ones.

Q: What happens if the CID sequence number increases by a large amount(ie: 1000)?  If the same sequence number arrives with a different connection ID, is the receiver supposed to close the connection, ignore the second one?

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