A Connection Interface to Libcurl
Description
The curl() function provides a drop-in replacement for base url()
with better performance and support for http 2.0, ssl (https://, ftps://),
gzip, deflate and other libcurl goodies. This interface is implemented
using the RConnection API in order to support incremental processing of
both binary and text streams. If you are looking for a more-user-friendly
http client, try the RCurl or httr packages instead.