Re: [quicwg/base-drafts] Version field <-> Version is not invariant (#3785)

[Nick Harper <[e-mail]>]

@nharper commented on this pull request.



> @@ -252,8 +252,9 @@ Packets for the same QUIC connection might use different connection ID values.
 
 ## Version
 
-QUIC versions are identified with a 32-bit integer, encoded in network byte
-order.  Version 0 is reserved for version negotiation (see
+The Version field contains a 32-bit integer, encoded in network byte order.

I definitely agree we don't want something like the TLS notation.

The only operation we need to do on QUIC versions (as encoded on the wire) is to check for equality. We don't need ordering of them (to check if one is less than another), and we certainly don't need to be able to do arithmetic on them, hence we don't need to consider them as numbers. By saying it's a 32-bit value (instead of an integer), we avoid needing to specify that it's network byte order. When specifying a version, you can write it out in hex (e.g. 0xff00001d), but that can be treated as a sequence of bytes instead of an integer.

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