网络编程

基于TCP通信

import socket
server
na=socket.socket()
na.bind(('127.0.0.1',9000))
na.listen(5)
conn.addr=na.accept()
conn.recv(1024)
conn.send(b'xxx')
conn.close()
na.close()


client
import socket
qiang=socket.socket()
qiang.connect(('127.0.0.1',9000))
qiang.send(b'xx')
qiang.recv(1024)
qiang.close()

基于UDP通信

server
import socket
na=socket.socket(type=socket.SOCK_DGRAM)
na.bind(('127.0.0.1',9000))
while 1:
    msg,cli_addr=na.recvfrom(1024)
    na.sendto(msg,cli_addr)
na.close()


client
import socket
qiang=socket.socket(type=socket.SOCK_DGRAM)
qiang.sendto(b'msg',('127.0.0.1',9000))
msg,_=qiang.recvfrom(1024)
print(msg)
qiang.close()