from socket import *

host = '192.168.48.128' # 这是客户端的电脑的ip
port = 13141 #接口选择大于10000的，避免冲突
bufsize = 1024 #定义缓冲大小

addr = (host,port) # 元祖形式
udpClient = socket(AF_INET,SOCK_DGRAM) #创建客户端

while True:
  data = input('> ')
  if not data:
    break
  data = data.encode(encoding="utf-8") 
  udpClient.sendto(data,addr) # 发送数据
  data,addr = udpClient.recvfrom(bufsize) #接收数据和返回地址
  print(data.decode(encoding="utf-8"),'from',addr)

udpClient.close()

from socket import *
from time import ctime

host = '' #监听所有的ip
port = 13141 #接口必须一致
bufsize = 1024
addr = (host,port) 

udpServer = socket(AF_INET,SOCK_DGRAM)
udpServer.bind(addr) #开始监听

while True:
 print('Waiting for connection...')
 data,addr = udpServer.recvfrom(bufsize) #接收数据和返回地址
 #处理数据
 data = data.decode(encoding='utf-8').upper()
 data = "at %s :%s"%(ctime(),data)
 udpServer.sendto(data.encode(encoding='utf-8'),addr)
 #发送数据
 print('...recevied from and return to :',addr)

udpServer.close()