H2 stream handlers to make sure content-length header value equals the sum of data payload

[ok2c]

H2 stream handlers to make sure content-length header value equals the sum of data payload.

Conformance to RFC 9113, section 8.1.1

[arturobernalg]

@ok2c
Shouldn't the content length also be validated when trailer HEADERS terminate the stream? RFC 9113 §8.1 states that trailer fields are carried in a field block that terminates the stream, while §8.1.1 requires Content-Length to equal the sum of the DATA frame payload lengths.

[ok2c]

Shouldn't the content length also be validated when trailer HEADERS terminate the stream? RFC 9113 §8.1 states that trailer fields are carried in a field block that terminates the stream, while §8.1.1 requires Content-Length to equal the sum of the DATA frame payload lengths.

@arturobernalg I honestly do not know. Do you think it should? If you do, I will update the change-set. As far as I can tell, in practical terms this check matters for message head only due to a possible H2 to HTTP/1.1 translation by an intermediary.