http2: send error text in case of ALPN mismatch
Send a human-readable HTTP/1 response in case of an unexpected ALPN protocol. This helps with debugging this condition, since previously the only result of it would be a closed socket.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines
Affected core subsystem(s)
@nodejs/http2