Python 网络编程之UDP

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于 2016-01-04 17:36:51 发布

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CC 4.0 BY-SA版权

文章标签： Python 网络编程 UDP

本文链接：https://blog.youkuaiyun.com/chunleixiahe/article/details/50457402

本文展示了如何使用Python实现UDP服务器端接收数据并返回，以及TCP客户端发送数据并接收响应的基本通信流程。

（1）服务器端

from socket import *
from time import ctime

HOST = '';
PORT = 21546
BUFSIZE = 1024
ADDR = (HOST, PORT)

udpSerSock = socket(AF_INET, SOCK_DGRAM)
udpSerSock.bind(ADDR)

while True:
print('waiting for message...')
data, addr = udpSerSock.recvfrom(BUFSIZE)
udpSerSock.sendto(('[%s] %s' %(ctime(), data.decode())).encode(), addr)
print('...received from and returned to:', addr)

udpSerSock.close()

（2）客户端

from socket import *

HOST = '127.0.0.1'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST, PORT)

while True:
tcpCliSock = socket(AF_INET, SOCK_STREAM)
tcpCliSock.connect(ADDR)
data = input('> ')
if not data:
break
tcpCliSock.send(('%s\r\n' % data).encode())
data = tcpCliSock.recv(BUFSIZE).decode()
if not data:
break
print(data.strip())
tcpCliSock.close()