170925_2 Python socket 创建UDP的服务器端和客户端

【python版本】3.6

UDP服务器端：

from socket import *
from time import ctime

host = ''
port = 21567
buf_size = 1024
addr = (host, port)

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

while True:
    print("waiting for message...")
    data, ADDR = udpSerSock.recvfrom(buf_size)
    response = '[%s] %s' % (ctime(), data.decode('utf-8'))
    udpSerSock.sendto(response.encode('utf-8'), ADDR)
    print("...received from and returned to:", ADDR)

udpSerSock.close()

UDP客户端：

from socket import *


host = 'localhost'
port = 21567
buf_size = 1024
addr = (host, port)


udpCliSock = socket(AF_INET, SOCK_DGRAM)

while True:
    data = input('>')
    if not data:
        break
    udpCliSock.sendto(data.encode('utf-8'), addr)
    data, addr = udpCliSock.recvfrom(buf_size)
    if not data:
        break
    print(data.decode('utf-8'))

udpCliSock.close()