Re: [quicwg/base-drafts] Variable-length integers (#595)

[MikkelFJ <[e-mail]>]

I agree with Ian - there are complexities with going with a length based solution when dealing with optional sub-frames so as is, I prefer  any solution that is not length based.

But it is not unhead of to have a length based solution where each subframe exists if the length is longer than most recently parsed subframe, but obviously that necessitates a termination of that subframe. Thus, each subframe typically has its own length. One of the IoT protocols do this, perhaps it is MQTT. However, it is likely to consume more space.

In isolation, it is also not a good idea to add a length based solution. If it is done, all other frames ought to be revisited, which would be some additional work to ensure the length can be understood without understanding the full frame.

I would generally like to see a solution where a frame could be skipped by just reading its header as opposed to requiring a full stream parser. It forces implementations to separate parsing from actions which may be architecturally nice, but introduces temporary data structures to handle the parse output. But, it will likely consume more space overall.

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