UDP协议套接字编程，socketserver实现高并发

UDP协议套接字编程

• 不用连接直接进行传输

服务端

import socket

server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
server.bind(('127.0.0.1', 8000))
print('wait...')

while True:
    data, client_addr = server.recvfrom(1024)
    print(data, client_addr)
    server.sendto(data.upper(), client_addr)

客户端

import socket

client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

while True:
    msg = input('please your enter msg')
    client.sendto(msg.encode('utf-8'), ('127.0.0.1', 8000))

    data, server_addr = client.recvfrom(1024)
    print(data, server_addr)

socketserver实现高并发

• 实现同一时刻有多个人接听

服务端

import socketserver
import subprocess
import struct

				  # 继承父类的连接循环
class MyHandler(socketserver.BaseRequestHandler):
    # 自己写一个通信循环，不用父类的
    def handle(self):

        while True:
            try:
                cmd = self.request.recv(1024)
                print(cmd)

                pipeline = subprocess.Popen(cmd.decode('utf8'),
                                            shell=True,
                                            stderr=subprocess.PIPE,
                                            stdout=subprocess.PIPE)

                stdout = pipeline.stdout.read()
                stderr = pipeline.stderr.read()

                count_len = len(stdout) + len(stderr)
                guding_bytes = struct.pack('i', count_len)

                self.request.send(guding_bytes)  # 4

                self.request.send(stderr + stdout)

            except ConnectionResetError:
                break


# 使用socketserver的连接循环(并发),但是使用了自己的通信循环
# myhandler = MyHandler()
if __name__ == '__main__':
    server = socketserver.ThreadingTCPServer(('127.0.0.1', 8000), MyHandler, bind_and_activate=True)
    print('start...')
    server.serve_forever()

客户端（可以使用多个）

import socket
import struct

phone = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
phone.connect(('127.0.0.1', 8080))

while True:
    msg = input('please your enter msg')
    phone.send(msg.encode('utf-8'))

    count_len = phone.recv(4)
    res_len = struct.unpack('i', count_len)[0]

    data = phone.recv(res_len)
    print(data.decode('gbk'))