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Re: [quicwg/base-drafts] First byte changes (#2006)

ianswett <notifications@github.com> Mon, 19 November 2018 16:35 UTC

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Subject: Re: [quicwg/base-drafts] First byte changes (#2006)
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ianswett commented on this pull request.



>  
-: The fourth bit (0x10) of byte 0 is set to 1.
+: The next two bits (those with a mask of 0x18) of byte 0 are reserved.  These
+  bits are protected using header protection (see Section 5.4 of
+  {{QUIC-TLS}}).  The value included prior to protection MUST be set to 0.  An

They're set to 0 prior to protection, which means a middlebox can't use them anyway unless you share the header protection key with it.

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