Python socket实现的简单通信功能示例

import socket
server = socket.socket()  # 默认是AF_INET、SOCK_STREAM
server.bind(("localhost",6868))   # 将主机号与端口绑定到套接字
server.listen()   # 设置并启动TCP监听器
while True:
  conn,addr = server.accept()   # 被动接受TCP连接，一直等待连接到达
  while True:
    data = conn.recv(1024)   # 接收TCP消息，并制定最大长度
    if not data:
      print("连接已断开")
      break
    conn.send(data.upper())  # 将接收到的数据转为大写在发回给它
server.close()

import socket
client = socket.socket()  # 默认是AF_INET、SOCK_STREAM
client.connect(("localhost",6868))
while True:
  s = input(">>")
  client.send(s.encode("utf-8"))
  data = client.recv(1024)
client.close()

import socketserver
class MyServer(socketserver.BaseRequestHandler):
  def handle(self):
    while True:
      self.data = self.request.recv(1024)
      if not self.data:
        print("%s客户端连接已断开"%self.client_address)
        break
      self.request.sendall(self.data.upper())
if __name__ == "__main__":
  server = socketserver.ThreadingTCPServer(("localhost",6969),MyServer)  # 开启一个线程
  server.serve_forever()