python:套接字 - 基于UDP协议Echo服务器、基于UDP协议创建Echo客户端

套接字 - 基于UDP协议Echo服务器

from socket import *
from time import *

server = socket(AF_INET, SOCK_DGRAM)
server.bind(('localhost', 6789))
while True:
    data, addr = server.recvfrom(1024)
    server.sendto(data, addr)
server.close()

套接字 - 基于UDP协议创建Echo客户端

from socket import *

client = socket(AF_INET, SOCK_DGRAM)
while True:
    data_str = input('请输入: ')
    client.sendto(data_str.encode('utf-8'), ('localhost', 6789))
    data, addr = client.recvfrom(1024)
    data_str = data.decode('utf-8')
    print('服务器回应:', data_str)
    if data_str == 'bye':
        break
client.close()