set_request

Description:

public void set_request (string? content_type, MemoryUse req_use, uint8[] req_body)

Convenience function to set the request body of a Message.

If content_type is null, the request body must be empty as well.

this	the message
content_type	MIME Content-Type of the body
req_use	a MemoryUse describing how to handle `req_body`
req_body	a data buffer containing the body of the message request.
req_length	the byte length of `req_body`.