NAME
CURLOPT_SSLVERSION – set preferred TLS/SSL version
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLVERSION, long version);
DESCRIPTION
Pass a long as parameter to control which version of SSL/TLS to attempt to use.
Use one of the available defines for this purpose. The available options are:
The default action. This will attempt to figure out the remote SSL protocol version.
TLSv1.x
SSLv2
SSLv3
TLSv1.0 (Added in 7.34.0)
TLSv1.1 (Added in 7.34.0)
TLSv1.2 (Added in 7.34.0)
DEFAULT
PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3, SMTPS etc.
EXAMPLE
CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, “https://example.com”);
/* ask libcurl to use TLS version 1.0 or later */ curl_easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
/* Perform the request */ curl_easy_perform(curl); }