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CentOS 3.3 |
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curl_version_info(3) |
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curl_version_info - returns run-time libcurl version info
#include <curl/curl.h>
curl_version_info_data *curl_version_info( CURLversion type);
Returns a pointer to a filled in struct with information about various run-time features in libcurl. type 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:
data = curl_version_info(CURLVERSION_NOW);
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.
The curl_version_info_data struct looks like this
typedef struct
{
CURLversion age; /* 0 - this kind of struct */
const char *version; /* human readable string */
unsigned int version_num; /* numeric representation */
const char *host; /* human readable string */
int features; /* bitmask, see below */
char *ssl_version; /* human readable string */
long ssl_version_num; /* number */
char *libz_version; /* human readable string */
const char *protocols[]; /* list of protocols */
} curl_version_info_data;
age describes what kind of struct this is. It is always 0 now. In a future libcurl, if this struct changes, this age counter may be increased, and then the struct for number 1 will look different (except for this first struct field).
version is just an ascii string for the libcurl version.
version_num is a 6 digit hexadecimal number created like this: <2 digits major number> | <2 digits minor number> | <2 digits patch number>. Version 7.9.8 is therefore returned as 0x070908.
host 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.
features
can have none, one or more bits set, and the currently
defined bits are:
CURL_VERSION_IPV6
supports IPv6
CURL_VERSION_KERBEROS4
supports kerberos4 (when using FTP)
CURL_VERSION_SSL
supports SSL (HTTPS/FTPS)
CURL_VERSION_LIBZ
supports HTTP deflate using libz
CURL_VERSION_NTLM
supports HTTP NTLM (added in 7.10.6)
CURL_VERSION_GSSNEGOTIATE
supports HTTP GSS-Negotiate (added in 7.10.6)
CURL_VERSION_DEBUG
libcurl was built with extra debug capabilities built-in. This is mainly of interest for libcurl hackers. (added in 7.10.6)
ssl_version is an ascii string for the OpenSSL version used. If libcurl has no SSL support, this is NULL.
ssl_version_num is the numerical OpenSSL version value as defined by the OpenSSL project. If libcurl has no SSL support, this is 0.
libz_version is an ascii string (there is no numerical version). If libcurl has no libz support, this is NULL.
protocols 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.
A pointer to a curl_version_info_data struct.
curl_version(3)
No known bugs.
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curl_version_info(3) | |