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CURLOPT_HTTP_VERSION

NAME

CURLOPT_HTTP_VERSION − specify HTTP protocol version to use

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP_VERSION, long version);

DESCRIPTION

Pass version a long, set to one of the values described below. They force 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.
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 ALSO

CURLOPT_SSLVERSION(3), CURLOPT_HTTP200ALIASES(3),

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