Python中的网络编程

TCPServer端：

__author__ = 'Nature'
# -*- coding: utf-8 -*-
from socket import *
from time import ctime
HOST = ''
PORT = 21567
BUFSIZ=1024
ADDR = (HOST,PORT)

tcpserver = socket(AF_INET,SOCK_STREAM)
tcpserver.bind(ADDR)
tcpserver.listen(5)

while True:
    print("waiting for connection....")
    tcpclient ,addr = tcpserver.accept()
    print('...connected from:',addr)
    while True:
        data = tcpclient.recv(BUFSIZ)
        if not data:
            break
        tcpclient.send(('[%s]%s'%(ctime(),data)).encode())
    tcpclient.close()
tcpserver.close()

TCPclient端：

__author__ = 'Nature'
# -*- coding: utf-8 -*-
from socket import *

HOST ='127.0.0.1'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST,PORT)

tcpclient = socket(AF_INET,SOCK_STREAM)
tcpclient.connect(ADDR)

while True:
    data = input('>')
    if not data:
        break
    tcpclient.send(data.encode())
    data = tcpclient.recv(BUFSIZE)
    if not data:
        break
    print(data)
tcpclient.close()

UDPserver端：

__author__ = 'Nature'
# -*- coding: utf-8 -*-
from socket import *
from time import ctime
HOST = ''
PORT = 21567
BUFSIZ=1024
ADDR = (HOST,PORT)

tcpserver = socket(AF_INET,SOCK_DGRAM)
tcpserver.bind(ADDR)

while True:
    print("waiting for message....")
    tcpclient ,addr = tcpserver.recvfrom(BUFSIZ)
    tcpserver.sendto(('[%s]%s'%(ctime(),tcpclient)).encode(),addr)
    print('...receive from and returned to:',addr)
tcpserver.close()

　　

UDPclient端：

__author__ = 'Nature'
# -*- coding: utf-8 -*-
from socket import *

HOST ='127.0.0.1'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST,PORT)

udpclient = socket(AF_INET,SOCK_DGRAM)

while True:
    data = input('>')
    if not data:
        break
    udpclient.sendto(data.encode(),ADDR)
    data,ADDR = udpclient.recvfrom(BUFSIZE)
    if not data:
        break
    print(data)
udpclient.close()