On Thu, 12 May 2005, Jonathan Hutcherson wrote:

> How can we make the initial handshake use this option (in other words, how
> can we make the handshake use ssl2)?

The curl tool has a -2 (or --sslv2) option, the lib has a CURLOPT_SSLVERSION.
I just found out it was pretty badly documented, so I just wrote up this:

        CURLOPT_SSLVERSION
               Pass a long as parameter to control what version of SSL/TLS to
               attempt to use. The available options are:

               CURL_SSLVERSION_DEFAULT
                      The default action. When libcurl built with OpenSSL, this
                      will attempt to figure out the remote SSL protocol ver-
                      sion. Unfortunately there are a lot of ancient and broken
                      servers in use which cannot handle this technique and
                      will fail to connect. When libcurl is built with GnuTLS,
                      this will mean SSLv3.

               CURL_SSLVERSION_TLSv1
                      Force TLSv1

               CURL_SSLVERSION_SSLv2
                      Force SSLv2

               CURL_SSLVERSION_SSLv3
                      Force SSLv3

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