Return the version of the cURL library in use

Returns the version of the cURL library that Spotfire Enterprise Runtime for R uses to download from URLs.

Usage

returns a character string containing the human-readable version of libcurl used by Spotfire Enterprise Runtime for R.

You can also set the following attributes. If they are not present, the functionality they encompass is not available.

ssl_version	The version of OpenSSL used by cURL to download from TLS-protected sites (for example, https:// URLs).
libssh_version	The version of LibSSH used by cURL to download from SSH hosts (for example, scp:// URLs).
protocols	A character vector containing the protocols that cURL understands and from which it can download.