1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3<html><head> 4<title>CURLOPT_SSLVERSION man page</title> 5<meta name="generator" content="roffit"> 6<STYLE type="text/css"> 7P.level0 { 8 padding-left: 2em; 9} 10 11P.level1 { 12 padding-left: 4em; 13} 14 15P.level2 { 16 padding-left: 6em; 17} 18 19span.emphasis { 20 font-style: italic; 21} 22 23span.bold { 24 font-weight: bold; 25} 26 27span.manpage { 28 font-weight: bold; 29} 30 31h2.nroffsh { 32 background-color: #e0e0e0; 33} 34 35span.nroffip { 36 font-weight: bold; 37 font-size: 120%; 38 font-family: monospace; 39} 40 41p.roffit { 42 text-align: center; 43 font-size: 80%; 44} 45</STYLE> 46</head><body> 47 48<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2> 49<p class="level0">CURLOPT_SSLVERSION - set preferred TLS/SSL version <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2> 50<p class="level0">#include <curl/curl.h> 51<p class="level0">CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLVERSION, long version); <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2> 52<p class="level0">Pass a long as parameter to control which version of SSL/TLS to attempt to use. 53<p class="level0">Use one of the available defines for this purpose. The available options are: 54<p class="level1"> 55<p class="level0"><a name="CURLSSLVERSIONDEFAULT"></a><span class="nroffip">CURL_SSLVERSION_DEFAULT</span> 56<p class="level1">The default action. This will attempt to figure out the remote SSL protocol version, i.e. either SSLv3 or TLSv1 57<p class="level0"><a name="CURLSSLVERSIONTLSv1"></a><span class="nroffip">CURL_SSLVERSION_TLSv1</span> 58<p class="level1">TLSv1.x 59<p class="level0"><a name="CURLSSLVERSIONSSLv2"></a><span class="nroffip">CURL_SSLVERSION_SSLv2</span> 60<p class="level1">SSLv2 61<p class="level0"><a name="CURLSSLVERSIONSSLv3"></a><span class="nroffip">CURL_SSLVERSION_SSLv3</span> 62<p class="level1">SSLv3 63<p class="level0"><a name="CURLSSLVERSIONTLSv10"></a><span class="nroffip">CURL_SSLVERSION_TLSv1_0</span> 64<p class="level1">TLSv1.0 (Added in 7.34.0) 65<p class="level0"><a name="CURLSSLVERSIONTLSv11"></a><span class="nroffip">CURL_SSLVERSION_TLSv1_1</span> 66<p class="level1">TLSv1.1 (Added in 7.34.0) 67<p class="level0"><a name="CURLSSLVERSIONTLSv12"></a><span class="nroffip">CURL_SSLVERSION_TLSv1_2</span> 68<p class="level1">TLSv1.2 (Added in 7.34.0) 69<p class="level0"><a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2> 70<p class="level0">CURL_SSLVERSION_DEFAULT <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2> 71<p class="level0">All TLS based protocols: HTTPS, FTPS, IMAPS, POP3, SMTPS etc. <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2> 72<p class="level0">TODO <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2> 73<p class="level0">SSLv2 is disabled by default since 7.18.1 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2> 74<p class="level0">Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2> 75<p class="level0"><a Class="manpage" href="/CURLOPT_USE_SSL.html">CURLOPT_USE_SSL</a> <a Class="manpage" href="/CURLOPT_HTTP_VERSION.html">CURLOPT_HTTP_VERSION</a> <span Class="manpage"> </span> <p class="roffit"> 76 This HTML page was made with <a href="http://daniel.haxx.se/projects/roffit/">roffit</a>. 77</body></html> 78