easy:SetOpt_Verbose(onoff)
onoff parameter to 1 to make the library display a lot of
verbose information about its operations on this handle. Very useful for
libcurl and/or protocol debugging and understanding. The verbose information
will be sent to stderr, or the stream get with #CURLOPT_STDERR.
You hardly ever want this get in production use, you will almost always want this when you debug/report problems.
To also get all the protocol data sent and received, consider using the
#CURLOPT_DEBUGFUNCTION.