message-handler/tcp-handler

Implement a TCP message handler, requiring you to develop your own TCP server.
This handler utilizes short connections, automatically disconnecting after sending.
The first four bytes of the message represent the text length; you can read the four bytes first and then retrieve the specified length of text.

Parameter Name	Required	Type	Description
type	Yes	int	Interface number
protocol	Yes	int	Protocol type
host	Yes	string	IP address
port	Yes	string	Port number

 {
  "type": 1001,
  "protocol": 1,
  "host": "127.0.0.1",
  "port": 18000
 }