set_cookies,
add_headers or authenticate.config(...) Within R, the options have slightly different names: the
initial CURLOPT_ is removed, all underscores are
converted to periods and the option is given in lower
case. Thus "CURLOPT_SSLENGINE_DEFAULT" becomes
"sslengine.default". See
listCurlOptions for a complete list
of the R name equivalents.
Unlike Curl (and RCurl), all configuration options are per request, not per handle.
set_config to set global config defaults,
and with_config to temporarily run code
with set options. Other config: accept_json,
accept_xml, add_headers,
authenticate, set_cookies,
timeout, use_proxy,
user_agent, verbose
Other ways to set configuration:
reset_config, set_config,
with_config