<pclass="level0">Returns a pointer to a filled in struct with information about various run-time features in libcurl. <spanClass="emphasis">type</span> should be set to the version of this functionality by the time you write your program. This way, libcurl will always return a proper struct that your program understands, while programs in the future might get an different struct. CURLVERSION_NOW will be the most recent one for the library you have installed:
<pclass="level0"> data = curl_version_info(CURLVERSION_NOW);
<pclass="level0">Applications should use this information to judge if things are possible to do or not, instead of using compile-time checks, as dynamic/DLL libraries can be changed independent of applications.
<pclass="level0">The curl_version_info_data struct looks like this
<pclass="level0"><spanClass="emphasis">age</span> describes what age of this struct this is. The number depends on how new libcurl you're using. You are however guaranteed to get a struct that you have a matching struct for in the header, as you tell libcurl your "age" with the input argument.
<pclass="level0"><spanClass="emphasis">version</span> is just an ascii string for the libcurl version.
<pclass="level0"><spanClass="emphasis">version_num</span> is a 24 bit number created like this: <8 bits major number> | <8 bits minor number> | <8 bits patch number>. Version 7.9.8 is therefore returned as 0x070908.
<pclass="level0"><spanClass="emphasis">host</span> is an ascii string showing what host information that this libcurl was built for. As discovered by a configure script or set by the build environment.
<pclass="level0"><spanClass="emphasis">features</span> can have none, one or more bits set, and the currently defined bits are:
<pclass="level1">libcurl was built with support for asynchronous name lookups, which allows more exact timeouts (even on Windows) and less blocking when using the multi interface. (added in 7.10.7)
<pclass="level1">libcurl was built with support for SPNEGO authentication (Simple and Protected GSS-API Negotiation Mechanism, defined in RFC 2478.) (added in 7.10.8)
<pclass="level1">libcurl was built with support for SSPI. This is only available on Windows and makes libcurl use Windows-provided functions for NTLM authentication. It also allows libcurl to use the current user and the current user's password without the app having to pass them on. (Added in 7.13.2)
<pclass="level1">libcurl was built with support for character conversions, as provided by the CUURLOPT_CONV_* callbacks. (Added in 7.15.4)
<pclass="level0"><spanClass="emphasis">ssl_version</span> is an ascii string for the OpenSSL version used. If libcurl has no SSL support, this is NULL.
<pclass="level0"><spanClass="emphasis">ssl_version_num</span> is the numerical OpenSSL version value as defined by the OpenSSL project. If libcurl has no SSL support, this is 0.
<pclass="level0"><spanClass="emphasis">libz_version</span> is an ascii string (there is no numerical version). If libcurl has no libz support, this is NULL.
<pclass="level0"><spanClass="emphasis">protocols</span> is a pointer to an array of char * pointers, containing the names protocols that libcurl supports (using lowercase letters). The protocol names are the same as would be used in URLs. The array is terminated by a NULL entry. <aname="RETURN"></a><h2class="nroffsh">RETURN VALUE</h2>
<pclass="level0">A pointer to a curl_version_info_data struct. <aname="SEE"></a><h2class="nroffsh">SEE ALSO</h2>
