sockets

[dj trombley]

sameer chowdhury wrote:
> 
> Hi everyone:
> 
> The first time I connect a client and a server using sockets, it works fine,
> I then close both sockets.  But the second and subsequent times, I get the
> following error, even if I change the ports for both the client and the
> server.  Can anyone tell me what the reason could be?  I am using Win98, and
> running python 1.5.2.
> 
> Error:
> 
> Traceback (innermost last):
>   File "client_stuff.py", line 6, in ?
>     s.connect(HOST, PORT)
>   File "<string>", line 1, in connect
> socket.error: (10061, 'winsock error')
> 
> client:
> 
>   # Echo client program
> from socket import *
> HOST = 'localhost'    # The remote host
> PORT = 81              # The same port as used by the server
> s = socket(AF_INET, SOCK_STREAM)
> s.connect(HOST, PORT)
> s.send('stuff')
> data = s.recv(1024)
> s.close()
> print 'Received', `data`
> 
> server:
> 
> # Echo server program
> from socket import *
> HOST = 'localhost'     # Symbolic name meaning the local host
> PORT = 81              # Arbitrary non-privileged server
> s = socket(AF_INET, SOCK_STREAM)
> s.bind(HOST, PORT)
> s.listen(1)
> conn, addr = s.accept()
> print 'Connected by', addr
> while 1:
>     data = conn.recv(1024)
>     if not data: break
>     conn.send(data)
> conn.close()

Winsock error 10061 is a CONNECTION_REFUSED. 

It is not clear from the above exactly what you are doing to
"close both sockets" (there are three!) or to connect them a second
time, so
perhaps more detail is needed.  I assume you realize that after
accept()'ing a connection, the server socket is still active and 
can accept() further connections.


-dj

Dave Trombley
<badzen at yifan.net>