socket and os.system

[mfaujour]

I HAVE THIS PYTHON PROGRAMM:
                                                                     
                                                                 
[test]$ cat socpb.py
import BaseHTTPServer, SocketServer, os, socket, threading
                                                                     
                                                                 
# the server initialisation
server = SocketServer.TCPServer((socket.gethostname(),
8088),BaseHTTPServer.BaseHTTPRequestHandler)
t=threading.Thread(target=server.serve_forever)
t.setDaemon(1)
t.start()
                                                                     
                                                                 
# the command
os.system("sleep 3600")
[test]$
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
I LAUNCH IT:
                                                                     
                                                                 
[test]$ python socpb.py
                                                                     
                                                                 
[1]+  Stopped                 python socpb.py
[test]$ bg
[1]+ python socpb.py &
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
I LOOK THE PORT IT USE --> OK:
                                                                     
                                                                 
[test]$ netstat -taupe | grep 8088
tcp  0  0 test:8088   *:*   LISTEN  mik   32481   14092/python
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
I KILL THE PYTHON PROGRAMM (OR IT STOP BY ANOTHER WAY):
                                                                     
                                                                 
[test]$ kill 14092
[test]$
[1]+  Terminated              python socpb.py
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
I LOOK THE PORT --> NOK, I EXPECTED THAT THE PORT WAS FREED BUT SLEEP
IS LISTENING AND IF I TRY TO LAUNCH MY PROGRAMM, IT FAIL:
                                                                     
                                                                 
[test]$ netstat -taupe | grep 8088
tcp  0 0 test:8088  *:*     LISTEN   mik   32481   14094/sleep
[test]$ python socpb.py
Traceback (most recent call last):
  File "socpb.py", line 4, in ?
    server = SocketServer.TCPServer((socket.gethostname(),
8088),BaseHTTPServer.BaseHTTPRequestHandler)
  File "/usr/local/lib/python2.3/SocketServer.py", line 330, in __init__
    self.server_bind()
  File "/usr/local/lib/python2.3/SocketServer.py", line 341, in
server_bind
    self.socket.bind(self.server_address)
  File "<string>", line 1, in bind                                   
                                                                     
                                                                     
                                                                     
                        
socket.error: (98, 'Address already in use')
                                                                     
                                                                 


IF I KILL THE SLEEP, ALL COME BACK FINE:
                                                                     
                                                                 
[test]$ kill 14094
[test]$ netstat -taupe | grep 8088
[test]$ python socpb.py
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
                                                                     
                                                                 
I HAVE SEARCHED ON THE WEB HOW TO LAUNCH THE SLEEP WHITHOUT IT GET THE
PORT IN THE ENVIRONNEMENT BUT NOTHING...
                                                                     
                                                                 
I HAVE A WORKAROUND BY USING rsh BUT I AM NOT VERY PLEASED WITH THAT.
                                                                     
                                                                 
DOES SOMEONE HAS AN IDEA ?