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A comment on HTTP/3: Everything you need to know about the next-generation web protocol. Parent comment

Re:HTTP/3: Everything you need to know about the next-genera... by tialaramex on Saturday February 12, 2022 @10:04PM (#30318728)
You can't actually do pipelining at all on HTTP/1.1 as it existed so yes, it was literally easier (frankly, necessary) to do an entire protocol revision.

HTTP/1.1 as documented looks like the simplest pipelining should work. But too many HTTP/1.1 servers in the wild by the point browsers began trying to enable pipelining were getting this wrong. Users don't care that "technically your bank's web server is non-conforming and you should contact them to report the issue" what they hear is just "Don't use our broken web browser".

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Re:HTTP/3: Everything you need to know about the next-genera... by jart on Saturday February 12, 2022 @11:34PM (#30319258)
It doesn't take a rocket scientist to support http/1.1 pipelining on servers. It's harder to implement in proxies. Much of the creepy middleware on the Internet would break down in nearly impossible to troubleshoot ways when browsers pipelined requests. So they forked the protocol as a bypass.
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