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Work in progress on optional use of ‘libcurl’ for Internet access (including on Windows):
• ‘capabilities("libcurl")’ reports if this is available.
• ‘libcurlVersion()’ reports the version in use, and other details.
• ‘curlGetHeaders()’ retrieves the headers for ‘http://’, ‘ftp://’ and ‘https://’ URLs.
• ‘download.file()’ has a new method ‘"libcurl"’ (prelimary version).