Whether to verify the remote server's certificate when connecting over SSL. It
can have the value 'on' or 'off'. It defaults to 'on'.
+@item cookie
+Send this cookie (it can also be a list of cookies separated by ';') with
+each outgoing request. Only supported when using protocols such as HTTP
+which support cookies, otherwise ignored.
+
@item timeout
Set the timeout in seconds of the CURL connection. This timeout is the time
that CURL waits for a response from the remote server to get the size of the