romenskiy2012/curl

mirror of https://github.com/curl/curl.git synced 2026-04-14 21:31:42 +03:00

Daniel Stenberg 2c6f13093e

libcurl docs: reduce 'since ...' in descriptions

Reduce mentions of libcurl versions like "since 7.xx ..." in option
descriptions to reduce clutter and make the texts easier to read. Keep
them in, or move them to, the HISTORY or DEPRECATED sections

The last version 7 release (7.88.1) shipped on Februrary 20, 2023.

Closes #20369

2026-01-20 11:22:27 +01:00

1.3 KiB

Raw Blame History

SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

TLS-backend

Added-in

curl

CURLOPT_SSL_ENABLE_NPN

libcurl

CURLOPT_SSL_ENABLE_ALPN (3)

CURLOPT_SSL_OPTIONS (3)

TLS

All

7.36.0

NAME

CURLOPT_SSL_ENABLE_NPN - use NPN

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_ENABLE_NPN, long npn);

DESCRIPTION

Deprecated. Setting this option has no function.

Pass a long as parameter, 0 or 1 where 1 is for enable and 0 for disable. This option enables/disables NPN in the SSL handshake (if the SSL backend libcurl is built to use supports it), which can be used to negotiate http2.

DEFAULT

1, enabled

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_SSL_ENABLE_NPN, 1L);
    result = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

DEPRECATED

Deprecated since 7.86.0

%AVAILABILITY%

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

1.3 KiB Raw Blame History