Python：socket编程，TCP/UDP

#!/usr/bin/env python

from socket import *
from time import ctime

HOST = ""
PORT = 6000
BUFSIZE = 1024
ADDR = (HOST, PORT)

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

while True:
sockCli,addr = sockSrv.accept()
print "...connected from:", addr
while True:
data = sockCli.recv(BUFSIZE)
if not data:
break
print data;
sockCli.send("[%s] %s" % (ctime(), data))
sockCli.close()

sockSrv.close()

[root@localhost python]# vim tcpCli.py
#!/usr/bin/env python

from socket import *

HOST = "localhost"
PORT = 6000
BUFSIZE = 1024
ADDR = (HOST, PORT)

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

while True:
data = raw_input(">")
if not data:
break
sockCli.send(data)
data = sockCli.recv(BUFSIZE)
if not data:
break
print data

sockCli.close()

#!/usr/bin/env python

from socket import *
from time import ctime

HOST = ""
PORT = 6000
BUFSIZE = 1024
ADDR = (HOST, PORT)

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

while True:
data, addr = sockSrv.recvfrom(BUFSIZE)
print "receive %s from %s" % (data, addr)
sockSrv.sendto("[%s] %s"%(ctime(),data), addr)

sockSrv.close()

#!/usr/bin/env python

from socket import *

HOST = "localhost"
PORT = 6000
BUFSIZE = 1024
ADDR = (HOST, PORT)

sockCli = socket(AF_INET, SOCK_DGRAM)

while True:
data = raw_input(">")
if not data:
break
sockCli.sendto(data, ADDR)
data, addr = sockCli.recvfrom(BUFSIZE)
if not data:
break
print data

sockCli.close()