Comments (6)
Use 0x80 bitmap flag to say, there is a another byte flag ? (like radiotap) or already change to use 2 or 4 bytes ?
from base-drafts.
I agree with Alexis the obvious approach is to use 0x80 to indicate another byte of flags. If we think extended flags will be common, I think we should change to 2 bytes as a minimum, because variable length fields before the connection id are more annoying to process in some systems(ie: BPFs), particularly if the number of times one can add more flags is unbounded.(ie: IPv6 extension headers).
I would lean towards suggesting that extended flags should come after the connection id.
from base-drafts.
I think a 2-byte field will be annoying in the near to medium-term, where the second byte is unused. Having the second byte after connection ID (and version?) would be annoying in the more distant future when 8+ flags are routine.
But in either case, this is a matter of taste and I see no showstoppers with having the extra flags come later. Especially since we might end up having lots of these flags.
On the other hand, I can imagine future protocol tweakers "abusing" unlimited public flags to put whole bitfields in there. I'm not sure if this is a "problem" we need to solve or not.
from base-drafts.
In any case it might be worthwhile to spell out what's acceptable in the bounds of a version. If a given version has 6 defined flags, can there be any number of public flag bytes? If so, do I simply ignore whatever's there?
from base-drafts.
As discussed in Tokyo, @ekr to write up "special packets" proposal & then we'll revisit this
from base-drafts.
#361 purports to address this; please re-open or file a new issue if that's incorrect.
from base-drafts.
Related Issues (20)
- Auth48: Combined internal references HOT 3
- Solidarity bot: Invalid HOT 4
- auth48 http/3: cite http2bis HOT 1
- Auth48: Keywords HOT 1
- Is "to the encoder" intended? (comment 2) HOT 4
- Auth48: Artwork types HOT 2
- Auth48: Difficult to parse sentence / duplicated words HOT 2
- Auth48: Huffman-coded versus Huffman encoded HOT 1
- To avoid awkward hyphenation, may we rephrase this text? Original (comment 6) HOT 2
- Should the following text be formatted using <aside>? (comment 7) HOT 2
- RFC Editor comment 8 HOT 1
- Auth48: SETTING_ => SETTINGS_ HOT 1
- Auth48: Capitalization and terminology consistency HOT 5
- Auth48: Servers and non-0-RTT clients HOT 1
- Stale contact information for Buck HOT 1
- STOP_SENDING to QPACK streams HOT 7
- CONTRIBUTING.md has out-of-date URLs HOT 1
- Marking packets as lost on PTO
- Add text on flow control deadlocks HOT 3
- Wiki: Implementations overview "destroyed" HOT 1
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from base-drafts.