Re: [quicwg/base-drafts] Clarify Actions on nonzero Reserved Bits (#2280)

ianswett <> Thu, 10 January 2019 11:49 UTC

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Subject: Re: [quicwg/base-drafts] Clarify Actions on nonzero Reserved Bits (#2280)
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@kazuho Given these are within the encrypted envelope, if one side thinks they mean something and the other doesn't or vice versa, there are sure to be problems, so any usage would have to be negotiated as you say.

@marten-seemann I couldn't find that in #2022.  My reading of that discussion was header protection is better than just doing packet number encryption.

I don't have a strong opinion here, but I'm also not seeing much reason to specify what the values need to be and saying they can be anything seems simpler.  Saying they have to be 0 invites people to short-cut the full decryption and drop packets that have other values immediately.  To be clear, I probably would have done that if I hadn't read this issue.

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