python3-TCP服務器和客戶端（socketserver類）

#!/usr/bin/env python3

import socket
import sys

HOST="localhost"
PORT=21200
ADDR=(HOST,PORT)

# Create a socket (SOCK_STREAM means a TCP socket)
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
    # 連接服務器
    sock.connect(ADDR)
    data=input('==>')
    sock.sendall(bytes(data + "\n", "utf-8"))

    # Receive data from the server and shut down
    received = str(sock.recv(1024), "utf-8")

print("Sent:     {}".format(data))
print("Received: {}".format(received))

#!/usr/bin/env python3

import  socketserver 
from time import ctime

HOST=''
PORT=21200
ADDR=(HOST,PORT)

class MyTCPHandler(socketserver.StreamRequestHandler):

    def handle(self):
        print("接受{0}連接...".format(self.client_address))
        self.data = self.rfile.readline().strip()
        print("{} 發來消息:".format(self.client_address[0]))
        print(self.data)
        # self.wfile是一個類似文件的對象，用於寫回客戶端
        self.wfile.write(bytes("{0}:{1} ".format(ctime(),self.data),'utf-8'))

if __name__ == "__main__":

    # Create the server, binding to localhost on port 9999
    with socketserver.TCPServer(ADDR, MyTCPHandler) as server:
        print("等待連接...")
        #激活服務器，直到按ctrl+c退出
        server.serve_forever()

bogon:python3 myhaspl$ python3 1-c.py
==>hhhh
Sent:     hhhh
Received: Sun Sep 16 12:47:01 2018:b'hhhh' 
下面是服務器端運行狀態：

等待連接...
接受('127.0.0.1', 50751)連接...
127.0.0.1 發來消息:
b'hi'
接受('127.0.0.1', 50752)連接...
127.0.0.1 發來消息:
b'hhhh'