Function to be called on failure. Arguments are

• string reason

Function to be called on success. Arguments are

• number code
• string body
• table headers

Request method, case insensitive. Possible values are:

• GET
• POST
• HEAD
• PUT
• DELETE
• PATCH
• OPTIONS

The target url

KeyValue table for parameters. This is only applicable to the following request methods:

• GET
• POST
• HEAD

KeyValue table for headers

Body string for POST data. If set, will override parameters

Content type for body.

Default: "text/plain; charset=utf-8"