Python網路程式設計入門

tcp

tcp伺服器

from

socket 

import*

from

time 

import

ctime

host = ''

port = 

12345

bufsize = 

1024

addr = (host,port)

tcpsersock = socket(af_inet,sock_stream)

tcpsersock.bind(addr)

tcpsersock.listen(5)

while

true

:print

'waiting for connection...'

tcpclisock, addr = tcpsersock.accept()

print

'connected from:'

,addr

while

true

:data = tcpclisock.recv(bufsize)

ifnot

data:

break

tcpclisock.send(

'[%s]%s'

%(ctime(),data))

tcpclisock.close()

tcpsersock.close()

tcp客戶端

from

socket 

import*

host = 

'localhost'

port = 

12345

addr = (host,port)

bufsize = 1024

tcpclisock = socket(af_inet,sock_stream)

tcpclisock.connect(addr)

while

true

:data = raw_input(

'input:')if

notdata:

break

tcpclisock.send(data)

data = tcpclisock.recv(bufsize)

ifnot

data:

break

print

data

tcpclisock.close()

udpudp伺服器

from

socket 

import*

from

time 

import

ctime

host = ''

port = 

12345

bufsize = 

1024

addr = (host,port)

udpsersock = socket(af_inet,sock_dgram)

udpsersock.bind(addr)

while

true

:print

'waiting for message...'

data, addr = udpsersock.recvfrom(bufsize)

udpsersock.sendto(

'[%s]%s'

%(ctime(),data),addr)

print

'received from and returned to :'

,addr

udpsersock.close()

udp客戶端

from

socket 

import*

host = 

'localhost'

port

= 12345

addr = (host,port)

bufsize = 

1024

udpclisock = socket(af_inet,sock_dgram)

while

true

:data = raw_input(

'input:')if

notdata:

break

udpclisock.sendto(data,addr)

data,addr = udpclisock.recvfrom(bufsize)

ifnot

data:

break

print

data

udpclisock.close()

利用socketserver模組實現網路通訊

socketserver是標準庫中乙個高階別的模組。用於簡化網路客戶與伺服器的實現

socketservertcp伺服器

# -*- coding: cp936 -*-

from

socketserver 

import

(tcpserver 

astcp,streamrequesthandler 

assrh)

from

time 

import

ctime

host = ''

port = 

1234

addr = (host,port)

#繼承streamrequesthandler

類class

myrequesthandler(srh):

#重寫方法

handle

defhandle(self):

print

'connected from :'

,self.client_address

data = self.rfile.readline()

self.wfile.write(

'[%s]%s'

%(ctime(),data))

tcpserver = tcp(addr,myrequesthandler)

print

'waiting for connection'

tcpserver.serve_forever()

socketservertcp客戶端

# -*- coding: cp936 -*-

from

socket 

import*

host

= 'localhost'

port = 

1234

addr = (host,port)

bufsize = 

1024

while

true

:tcpclisock = socket(af_inet,sock_stream)

tcpclisock.connect(addr)

data = raw_input(

'輸入：')

ifnot

data:

break

tcpclisock.send(

'%s\n'

%data)   

#如果沒有

'%s\n'

收不到，因為是一行行讀的

data = tcpclisock.recv(bufsize)

ifnot

data:

break

print

data

tcpclisock.close()

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