elixir-mint / mint / 3edf068dd9cb574f059b93e485ad0524a51e791d-PR-513

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main: 89%

Pull #513

github

Parse HTTP/1 header lines with SWAR instead of :erlang.decode_packet/3

Header values were decoded with decode_packet/3 and then scanned again to
replace obs-folds, trim whitespace and validate the name and value bytes.
Header lines are now parsed in one pass that reads 7 bytes at a time as an
integer and uses bit tricks to find the colon and the line end while
validating the name and value. Bare LF line endings and obs-folds are
handled by the parser, so the sentinel byte :stream_headers appended to
make decode_packet/3 emit a header at the end of the data isn't needed.

Co-authored-by: Wojtek Mach <wojtekmach@users.noreply.github.com>

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