Expand/Shrink

curl_version_info

Definition: include builtins\libcurl.e

sequence res = curl_version_info()
Description: Obtain extended version information.

Returns {} if curl_version_info is not supported (eg 7.9.8 from 2002), otherwise a sequence which can be examined using the LIBCURL_VERSION_XXX constants (elements above LIBCURL_VERSION_PROTOCOLS[=8] may be missing).
pwa/p2js: Not supported.
Comments: The following constants are provided: 

global constant CURLVERSION_FIRST  = 0,
                CURLVERSION_SECOND = 1,
                CURLVERSION_THIRD  = 2,
                CURLVERSION_FOURTH = 3,
                CURLVERSION_FIFTH  = 4,
                CURLVERSION_NOW = CURLVERSION_FIFTH

global constant LIBCURL_VERSION_AGE          = 1,
                LIBCURL_VERSION_STRING       = 2,
                LIBCURL_VERSION_NUM          = 3,
                LIBCURL_VERSION_HOST         = 4,
                LIBCURL_VERSION_FEATURES     = 5,
                LIBCURL_VERSION_SSL_VERSION  = 6,
                LIBCURL_VERSION_LIBZ_VERSION = 7,
                LIBCURL_VERSION_PROTOCOLS    = 8,
                -- if LIBCURL_VERSION_AGE>=CURLVERSION_SECOND
                LIBCURL_VERSION_ARES         = 9,
                LIBCURL_VERSION_ARES_NUM     = 10,
                -- if LIBCURL_VERSION_AGE>=CURLVERSION_THIRD
                LIBCURL_VERSION_LIBIDN       = 11,
                -- if LIBCURL_VERSION_AGE>=CURLVERSION_FOURTH
                LIBCURL_VERSION_ICONV_VER_NUM = 12,
                LIBCURL_VERSION_LIBSSH_VERSION = 13,
                -- if LIBCURL_VERSION_AGE>=CURLVERSION_FIFTH
                LIBCURL_VERSION_BROTLI_VER_NUM = 14,
                LIBCURL_VERSION_BROTLI_VERSION = 15

res[LIBCURL_VERSION_AGE] will be CURLVERSION_FIRST..CURLVERSION_FIFTH (0..4), though personally I would recommend ignoring that field and testing length(res) against the LIBCURL_VERSION_XXX constants instead.

res[LIBCURL_VERSION_FEATURES] can contain the following (literal) strings:
{"IPV6", "KERBEROS4", "SSL", "LIBZ", "NTLM", "GSSNEGOTIATE", "DEBUG", "ASYNCHDNS", "SPNEGO", "LARGEFILE", "IDN", "SSPI", "CONV", "CURLDEBUG", "TLSAUTH_SRP", "NTLM_WB", "HTTP2", "GSSAPI", "KERBEROS5", "UNIX_SOCKETS", "PSL", "HTTPS_PROXY", "MULTI_SSL", "BROTLI"}
See https://curl.haxx.se/libcurl/c/curl_version_info.html for their precise meanings, if you need to.

res[LIBCURL_VERSION_PROTOCOLS] can contain the following (literal) strings:
{"dict", "file", "ftp", "ftps", "gopher", "http", "https", "imap", "imaps", "ldap", "pop3", "pop3s", "rtsp", "smb", "smbs", "smtp", "smtps", "telnet", "tftp"} (and possibly others)
The protocol names are the same as would be used in URLs.

libraries built with SSH support will have a non-"NULL" string returned in res[LIBCURL_VERSION_LIBSSH_VERSION], but tend to be three times bigger.
Example:
Copy 
include libcurl.e
?curl_version()
-- Output (eg):
-- "libcurl/7.57.0 WinSSL zlib/1.2.11"
object res = curl_version_info()
pp(res,{pp_Nest,1,pp_StrFmt,-2})
-- Output (eg):
--  {4,
--   "7.57.0",
--   {7,57,0},
--   "i386-pc-win32",
--   {"IPV6", "SSL", "LIBZ", "NTLM", "ASYNCHDNS", "SPNEGO", "LARGEFILE", "SSPI",
--    "KERBEROS5"},
--   "WinSSL",
--   "1.2.11",
--   {"dict", "file", "ftp", "ftps", "gopher", "http", "https", "imap", "imaps",
--    "ldap", "pop3", "pop3s", "rtsp", "smb", "smbs", "smtp", "smtps", "telnet",
--    "tftp"},
--   "NULL",
--   0,
--   "NULL",
--   0,
--   "NULL",
--   0,
--   "NULL"}
See Also: curl_version, pp