Python簡單伺服器程式

標籤：

這是《Python核心編程（中的文第二版）》的一個習題，題目要求伺服器能識別以下命令：

ls 返回伺服器程式目前的目錄

os 返回伺服器作業系統的資訊

date 得到伺服器當前的時間

ls dir 返回目錄dir的檔案清單

 

伺服器程式：

 1 import time 2 import os 3 import datetime 4  5 HOST=‘‘ 6 PORT=21234 7 ADDR=(HOST,PORT) 8 BUFSIZE=8096 9 10 SerSock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)11 SerSock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)12 SerSock.bind(ADDR)13 SerSock.listen(5)14 15 def process_cmd(cmd):16     print "The command receive from client is:%s"%cmd17     if cmd==‘ls‘:18         curdir=os.curdir19         res=os.listdir(curdir)20     elif cmd==‘os‘:21         res=os.uname()22     elif cmd.startswith(‘ls‘):23         length=len(cmd.split())24         if length==1:25             res="command is illegal"26         elif length==2:27             reqdir=cmd.split()[1]28             try:29                 res=os.listdir(reqdir)30             except OSError,e:31                 res=e32         else:33             res="argument is illegal"34     elif cmd==‘date‘:35         res=datetime.date.today()36     else:37         res=‘command is illegal‘38     print res39     return str(res)40 while True:41     CliSock,addr=SerSock.accept()42     print "...connected from %s:%s"%addr43     while True:44         cmd=CliSock.recv(BUFSIZE)45         if not cmd:46             break47         else:48             res=process_cmd(cmd)49         CliSock.send(res)50     CliSock.close()51 SerSock.close()

用戶端程式：

 1 #!/usr/bin/python 2  3 import socket 4  5 HOST=‘localhost‘ 6 PORT=21234 7 ADDR=(HOST,PORT) 8 BUFSIZ=8096 9 10 CliSock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)11 CliSock.connect(ADDR)12 print "Please input below command."13 print "*************************************"14 print "date   ls/ls dir     os"15 print "*************************************"16 while True:17     cmd=raw_input(">")18     if not cmd:19         continue20     CliSock.send(cmd)21     res=CliSock.recv(BUFSIZ)22     if not res:23         print "response from server error."24     print res25 26 CliSock.close()

 

執行結果：

Please input below command.*************************************date   ls/ls dir     os*************************************>date2015-06-09>ls[‘client_select.py‘, ‘client.py‘, ‘server_select.py‘, ‘chat_server_v1.py‘, ‘server.py‘, ‘daytimeclient.py‘, ‘chat_client_v1.py‘, ‘chat_server_v2.py‘, ‘tsTserv.py‘, ‘tsTclnt.py‘]>ls /home[‘tmyyss‘]>os(‘Linux‘, ‘ubuntu‘, ‘3.13.0-53-generic‘, ‘#89-Ubuntu SMP Wed May 20 10:34:28 UTC 2015‘, ‘i686‘)>>>>>exitcommand is illegal>>>qcommand is illegal

 

Python簡單伺服器程式