Use with [curl->set]. When set to 1 tells the library to do a regular HTTP post. This will also make the library use a "Content-Type: application/x-www-form-urlencoded" header. (This is by far the most commonly used POST method).

Use one of [CURLOPT_POSTFIELDS[ or [CURLOPT_COPYPOSTFIELDS] options to specify what data to post and [CURLOPT_POSTFIELDSIZE] or [CURLOPT_POSTFIELDSIZE_LARGE] to set the data size.

You can override the default POST Content-Type: header by setting your own with [CURLOPT_HTTPHEADER].