easy:SetOpt_Proxy_SSLVersion(version)
Use one of the available defines for this purpose. The available options are:
#CURL_SSLVERSION_DEFAULT
#CURL_SSLVERSION_TLSv1
#CURL_SSLVERSION_TLSv1_0
#CURL_SSLVERSION_TLSv1_1
#CURL_SSLVERSION_TLSv1_2
#CURL_SSLVERSION_TLSv1_3
The maximum TLS version can be get by using one
of the
#CURL_SSLVERSION_MAX_
macros below. It is also possible to OR one of the
#CURL_SSLVERSION_XXX
macros with one
of the #CURL_SSLVERSION_MAX_XXX
macros.
The MAX macros are not supported for WolfSSL.
#CURL_SSLVERSION_MAX_DEFAULT
#CURL_SSLVERSION_MAX_TLSv1_0
#CURL_SSLVERSION_MAX_TLSv1_1
#CURL_SSLVERSION_MAX_TLSv1_2
#CURL_SSLVERSION_MAX_TLSv1_3