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

[martinduke <[e-mail]>]

martinduke commented on this pull request.



> -used - and they MUST be padded to at least 1200 octets.
-
-The server receives this packet and determines whether it potentially creates a
-new connection (see {{packet-handling}}).  If the packet might generate a new
-connection, the server then checks whether it understands the version that the
-client has selected.
-
-If the packet contains a version that is acceptable to the server, the server
-proceeds with the handshake ({{handshake}}).  This commits the server to the
-version that the client selected.
+with an existing connection, or - for servers - potentially create a new
+connection.
+
+First, hosts try to associate the packet with an existing connection. If the
+packet has a connection ID corresponding to an existing connection, QUIC
+processes that packet accordingly. Note that a NEW_CONNECTION_ID frame

As @MikeBishop pointed out, Initial packets are a version-dependent concept. So although I think we have to be careful to check the version first, I can put something together along these lines.

On the other hand, an Initial packet might be a retransmission due to loss of the first server flight. Wouldn't we want this to be associated with the existing connection context, especially since there might be 0-RTT packets?

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