SocketServer crash on my machine

[Gordon McMillan]

Syver Enstad wrote: 

>I was checking out the the SocketServer example in Mark Lutz rather
>excellent book Programming Python 2 edition,
>when

[snip] 

>    data = self.request.recv(1024)
>  File "<string>", line 1, in recv
>AttributeError: 'int' object has no attribute 'recv'

The socket has already been closed.

[more snippage]

>class MyClientHandler(SocketServer.BaseRequestHandler):
>    def handle(self):
>        print self.client_address, now()
>        print self.request
>        time.sleep(5)
>        while 1:
>            data = self.request.recv(1024)
>            if not data:
>                break
>            self.request.send('Echo=>%s at %s' % (data, now()))
>        self.request.close()

The code is wrong. It assumes that it is in charge of closing the
socket (or that a closed socket will yield no data - which is just
one way that you may find out a socket is closed).

Different platforms show different behavior here (and behavior may
be influenced by subtle timing issues, and whether or not the socket
is blocking or non-blocking).

I would guess that you got one "Echo=> ....", then the client receiving
the echo shut down the socket, and you died on the 2nd recv. Always
put send and recv within
try:
  ...
except (AttributeError, socket.error):
  ...

- Gordon