From 4bcc532de5b639ace6f96f0a30524a08861843b1 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Sun, 13 Dec 2015 09:23:36 +0100 Subject: http: add libcurl option to allow HTTP/2 for HTTPS only ... and stick to 1.1 for HTTP. This is in line with what browsers do and should have very little risk. --- docs/libcurl/opts/CURLOPT_HTTP_VERSION.3 | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'docs/libcurl/opts') diff --git a/docs/libcurl/opts/CURLOPT_HTTP_VERSION.3 b/docs/libcurl/opts/CURLOPT_HTTP_VERSION.3 index aed7c0efe..262365e06 100644 --- a/docs/libcurl/opts/CURLOPT_HTTP_VERSION.3 +++ b/docs/libcurl/opts/CURLOPT_HTTP_VERSION.3 @@ -45,8 +45,15 @@ Enforce HTTP 1.0 requests. .IP CURL_HTTP_VERSION_1_1 Enforce HTTP 1.1 requests. .IP CURL_HTTP_VERSION_2_0 -Attempt HTTP 2 requests. libcurl will fall back to HTTP 1.x if HTTP 2 can't be +Attempt HTTP 2 requests. libcurl will fall back to HTTP 1.1 if HTTP 2 can't be negotiated with the server. (Added in 7.33.0) + +The alias \fICURL_HTTP_VERSION_2\fI was added in 7.43.0 to better reflect the +actual protocol name. +.IP CURL_HTTP_VERSION_2TLS +Attempt HTTP 2 over TLS (HTTPS) only. libcurl will fall back to HTTP 1.1 if +HTTP 2 can't be negotiated with the HTTPS server. For clear text HTTP servers, +libcurl will use 1.1. (Added in 7.47.0) .SH DEFAULT CURL_HTTP_VERSION_NONE .SH PROTOCOLS -- cgit v1.2.3