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https://github.com/moparisthebest/curl
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32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
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HTTP2 with libcurl
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Spec: http://tools.ietf.org/html/draft-ietf-httpbis-http2-06
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nghttp2 (https://github.com/tatsuhiro-t/nghttp2)
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We're depending on this 3rd party library for the actual low level protocol
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handling parts. The reason for this is that HTTP2 is much more complex at
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that layer than HTTP1.1 (which we implement on our own) and that nghttp2 is
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an already existing and well functional library.
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Over an http:// URL
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If CURLOPT_HTTP_VERSION is set to CURL_HTTP_VERSION_2, libcurl will include
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an upgrade header in the initial request to the host to allow upgrading to
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http2. Possibly introduce an option that will cause libcurl to fail if not
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possible to upgrade. Possibly introduce an option that makes libcurl use
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http2 at once over http://
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Over an https:// URL
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If CURLOPT_HTTP_VERSION is set to CURL_HTTP_VERSION_2, libcurl will use ALPN
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(or NPN) to negotiate which protocol to continue with. Possibly introduce an
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option that will cause libcurl to fail if not possible to use http2.
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To consider:
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- How to tell libcurl when using the multi interface that all or some of the
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handles are allowed to re-use the same physical connection. Can we just
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re-use existing pipelining logic?
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