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| -rw-r--r-- | lib/README.http2 | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/lib/README.http2 b/lib/README.http2 index 2975a3dbd..7ae71e57f 100644 --- a/lib/README.http2 +++ b/lib/README.http2 @@ -1,28 +1,48 @@ HTTP2 with libcurl - Spec: http://tools.ietf.org/html/draft-ietf-httpbis-http2-06 + Spec: http://tools.ietf.org/html/draft-ietf-httpbis-http2 nghttp2 (https://github.com/tatsuhiro-t/nghttp2) - We're depending on this 3rd party library for the actual low level protocol - handling parts. The reason for this is that HTTP2 is much more complex at - that layer than HTTP1.1 (which we implement on our own) and that nghttp2 is - an already existing and well functional library. + libcurl uses this 3rd party library for the low level protocol handling + parts. The reason for this is that HTTP2 is much more complex at that layer + than HTTP1.1 (which we implement on our own) and that nghttp2 is an already + existing and well functional library. + + Right now, nghttp2 implements http2 draft-09 Over an http:// URL If CURLOPT_HTTP_VERSION is set to CURL_HTTP_VERSION_2, libcurl will include an upgrade header in the initial request to the host to allow upgrading to - http2. Possibly introduce an option that will cause libcurl to fail if not - possible to upgrade. Possibly introduce an option that makes libcurl use - http2 at once over http:// + http2. + + Possibly we can later introduce an option that will cause libcurl to fail if + not possible to upgrade. Possibly we introduce an option that makes libcurl + use http2 at once over http:// Over an https:// URL If CURLOPT_HTTP_VERSION is set to CURL_HTTP_VERSION_2, libcurl will use ALPN (or NPN) to negotiate which protocol to continue with. Possibly introduce an option that will cause libcurl to fail if not possible to use http2. + Consider options to explicitly disable ALPN and/or NPN. + +SSL libs + + The challange is the ALPN and NPN support and all our different SSL + backends. Right now we support ALPN and VPN with OpenSSL and ALPN with + GnuTLS. + +Applications + + We hide http2's binary nature and convert received http2 traffic to headers + in HTTP 1.1 style. This allows applications to work unmodified. + +curl tool + + curl offers the --http2 command line option to enable use of http2 To consider: |