Python实现socket非阻塞通讯功能示例

时间:2021-04-02 人气:1

本文实例讲述了Python实现socket非阻塞通讯功能。分享给大家供大家参考，具体如下：

非阻塞需要多线程编程

服务端

方式1: 使用threading库实现多线程

基本方法和单进程基本写法一致, 将收发部分封装为函数以便开启其他线程:

import socket
import time
import threading
def handle_socket(conn, addr):
  while True:
    data = conn.recv(1024)
    print(data.decode('utf-8'))
    time.sleep(3)
    send_data = 'got it'
    conn.send(send_data.encode('utf-8'))
  conn.close()

基本设置和调用部分: 绑定, 监听, 接受连接:

if __name__ == '__main__':
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.bind(('0.0.0.0', 8888))
  s.listen()
  while True:
    conn, addr = s.accept()
    client_thread = threading.Thread(target=handle_socket, args=[conn, addr])
    client_thread.start()

方式2: 通过继承StreamRequestHandler库实现多线程

收发部分写到handle方法中:

import socketserver
from socketserver import StreamRequestHandler
import time
class MyHandler(StreamRequestHandler):
  def handle(self):
    # addr = self.request.getpeername()
    # print('get connection from ', addr)
    # self.wfile.write('hello, thank for your connection'.encode())
    while True:
      datarecv = self.request.recv(1024)
      if not datarecv:
        break
      time.sleep(3)
      print(datarecv.decode())
      self.request.send("got it".encode())

开启

myserver = socketserver.ThreadingTCPServer(('127.0.0.1', 8888), MyHandler)
myserver.serve_forever()

客户端

客户端:

import socket
conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
conn.connect(('127.0.0.1', 8888))
while True:
  conn.send('hello'.encode())
  data = conn.recv(1024)
  print(data.decode())

希望本文所述对大家Python程序设计有所帮助。

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