Re: [quicwg/base-drafts] Pull some H2 content into the introduction (#2683)

[Mike Bishop <[e-mail]>]

MikeBishop commented on this pull request.



> @@ -88,28 +88,101 @@ code and issues list for this draft can be found at
 
 HTTP semantics are used for a broad range of services on the Internet. These
 semantics have commonly been used with two different TCP mappings, HTTP/1.1 and
-HTTP/2.  HTTP/2 introduced a framing and multiplexing layer to improve latency
-without modifying the transport layer.  However, TCP's lack of visibility into
-parallel requests in both mappings limited the possible performance gains.
+HTTP/2.  HTTP/3 supports the same semantics over a new transport protocol, QUIC.
+
+## Prior versions of HTTP
+
+HTTP/1.1 is a TCP mapping which uses whitespace-delimited text fields to convey
+HTTP messages.  While these exchanges are human-readable, the whitespace leads
+to parsing difficulties and workarounds to be tolerant of variant behavior.
+Because each connection can transfer only a single HTTP request or response at a
+time in each direction, multiple parallel TCP connections are used, reducing the
+ability of the congestion controller to accurately manage traffic between
+endpoints.

I heard that proposal again in Prague, as a matter of fact.  I wish them all success.

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