Python implementation of TCP steps

TCP server setup:

1. Import module

   import socket

2. Create socket object

sock = socket.socket(socket_family,socet_type)
	参数：
		socket_family
			socket.AF_INET IPV4
			socket.AF_INET6 IPV6
			socket.AF_UNIX  unix 系统内部传输
		socket_type
			socket.SOCK_STREAM  TCP协议
			socket.SOCK_DGRAM    UDP协议

3. Bind IP and port

 sock.bind(("IP"，端口号))  #注意里面参数是一个元组

4. Set the maximum number of monitors

sock.listen(5) #监听端口

5. receive the info

con,addr = sock.accept()
	con：接受sock对象，接受对发送信息
	addr: ip 和端口号

6. Close socket

sock.close()

Construction of TCP client

1. Import module

import socket

2. Create scoket object

sock =socket.socket(socket.AF_INET,socket.SOCK_STREAM)

3. connect to the server

sock.connect(("IP",端口号)) # 同样的这是要元组

4. send Message

sock.send("发送信息内容") #注意里面发送的是字节串，不能直接传输字符串 需要encode()

5. receive the info

 msg = sock.recv(1024)  #同样接受的也是字节串，需要进行decode()

7. Close socket

sock.close()