服务端：
1 import socket
2
3 server=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) #数据报协议-》udp
4 server.bind(('127.0.0.1',8080))
5
6 data,client_addr=server.recvfrom(1) #b'hello'==>b'h'
7 print('第一次：',client_addr,data)
8
9 data,client_addr=server.recvfrom(1024) #b'world' =>b'world'
10 print('第二次：',client_addr,data)
11 #
12 # data,client_addr=server.recvfrom(1024)
13 # print('第三次：',client_addr,data)
14
15 server.close()
客户端：
1 import socket
2
3 client=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) #数据报协议-》udp
4
5 client.sendto('hello'.encode('utf-8'),('127.0.0.1',8080))
6 client.sendto('world'.encode('utf-8'),('127.0.0.1',8080))
7 # client.sendto(''.encode('utf-8'),('127.0.0.1',8080))
8
9 client.close()
