Re: [quicwg/base-drafts] Rewrite text about Version Negotiation (#1039)

[Mike Bishop <[e-mail]>]

MikeBishop commented on this pull request.



> -packets in anticipation of the Initial packet arriving later. This is
-especially useful for 0-RTT packets that routinely accompany Initial packets.
-
-Buffering ensures that data is not lost, which improves performance; conversely,
-discarding these packets could create false loss signals for the congestion
-controllers.  However, limiting the number and size of buffered packets might be
-needed to prevent exposure to denial of service.
-
-Servers MUST NOT send packets in response to these buffered packets until
-the initial packet arrives.
-
-In this version of QUIC, clients cannot send short form headers prior to a
-response from the server. Servers that do not support a version of QUIC that
-allows early short headers MUST either respond with a stateless reset or drop
-the packet silently.
+First, hosts try to associate the packet with an existing connection. If the

"Initial" is a version-dependent concept, so you still check the version first.  If you understand the version, then you can check whether it's an Initial packet.  However, since that's for long headers, the version will always be explicitly present, so you don't have to look up the connection ID first.

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