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Subject [Bug 59311] Do not send "Upgrade: h2" header to HTTP/1.1 clients when SSL/TLS is used
Date Thu, 14 Apr 2016 20:44:27 GMT

--- Comment #2 from Michael Kaufmann <> ---
>From RFC 7540 (HTTP/2), section 3.2:

> A server MUST ignore an "h2" token in an Upgrade header field. Presence of a token with
"h2" implies HTTP/2 over TLS, which is instead negotiated as described in Section 3.3.

This means that clients must not upgrade from HTTP/1.1 to HTTP/2 when using
TLS. It makes no sense that Apache sends an "Upgrade: h2" response header.

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