Re: [quicwg/base-drafts] consider making the varint encoding unique (#2299)

[MikkelFJ <[e-mail]>]

> Looking up at the requirement for shortest possible frame type, I don't understand why that's even necessary to require this. 

This is because it allows for efficient switch constructs when decoding the frames. This avoids additional complexity during decode. There is difference between enumerations such as frame types, and length values. Enumerations should be uniquely encoded whereas it could be argued that lengths need not due to the memmov issue.

I'm not sure that vast overhead goes to decryption because this is typically 3 cycles per byte so you could easily double the time overhead if you have many small frames that are processed inefficiently.

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