CURLOPT_HTTP_VERSION(3) curl_easy_setopt options CURLOPT_HTTP_VERSION(3)NAMECURLOPT_HTTP_VERSION - specify HTTP protocol version to use
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP_VERSION, long ver‐
sion);
DESCRIPTION
Pass version a long, set to one of the values described below. They ask
libcurl to use the specific HTTP versions. This is not sensible to do
unless you have a good reason. You have to set this option if you want
to use libcurl's HTTP/2 support.
Note that the HTTP version is just a request. libcurl will still prior‐
itize to re-use an existing connection so it might then re-use a con‐
nection using a HTTP version you haven't asked for.
CURL_HTTP_VERSION_NONE
We don't care about what version the library uses. libcurl will
use whatever it thinks fit.
CURL_HTTP_VERSION_1_0
Enforce HTTP 1.0 requests.
CURL_HTTP_VERSION_1_1
Enforce HTTP 1.1 requests.
CURL_HTTP_VERSION_2_0
Attempt HTTP 2 requests. libcurl will fall back to HTTP 1.x if
HTTP 2 can't be negotiated with the server. (Added in 7.33.0)
DEFAULT
CURL_HTTP_VERSION_NONE
PROTOCOLS
HTTP
EXAMPLE
TODO
AVAILABILITY
Along with HTTP
RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSOCURLOPT_SSLVERSION(3), CURLOPT_HTTP200ALIASES(3),
libcurl 7.37.0 17 Jun 2014 CURLOPT_HTTP_VERSION(3)
