Re: [quicwg/base-drafts] Implicit acknowledgment via header block acknowledgment (#1399)

[Mike Bishop <[e-mail]>]

MikeBishop commented on this pull request.



> @@ -491,7 +491,14 @@ instruction begins with the '1' one-bit pattern. The instruction specifies the
 total number of dynamic table inserts and duplications since the last Table
 State Synchronize, encoded as a 7-bit prefix integer.  The encoder uses this
 value to determine which table entries are vulnerable to head-of-line blocking.
-A decoder MAY coalesce multiple synchronization updates into a single update.
+
+A decoder MAY coalesce multiple synchronization updates into a single update.  A
+decoder MAY rely on Header Acknowledgement instructions to indirectly

If the meaning of TSS is changing, then it's no longer a MAY for the decoder to let Header Acknowledgement instructions acknowledge changes.  The decoder MUST track the encoder's perspective of what has been acknowledged, and SHOULD send TSS in addition if entries have been added that aren't referenced.

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