How to check client shutdown?

[Paul Pittlerson]

I'm currently learning about the socket module. My question is how can I detect if a connection is closed from the other side, for example a KeyboardInterrupt as I frequently use. My code below:

##########################################################
#server script:

class client(threading.Thread):    
    def __init__(self, connection):
        super(client, self).__init__()
        
        self.recv = connection.recv
        
        print dir(connection)
        
    def start(self):
        self.run()
        
    def run(self):
        while True:
            data = self.recv(2000)
            
            if data:
                msg = self.decode(data)
                print msg
                #break;
                
    def decode(self, data):
        return pickle.loads(data)
        
                
class bullet_server:
    def __init__(self):
        self.server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        
    def start(self):
        server_address = ("localhost", 9006)
        print '/--server running--/'
        print server_address 
        self.server.bind(server_address)
        self.server.listen(5)

        while True:
            connection, client_address = self.server.accept()
            
            c = client(connection)
            c.start()
            
            
if __name__ == '__main__':            
    server = bullet_server()
    server.start()


##########################################################
#client script:

# set IP and port
host = '127.0.0.1'
port = 9006

# connect to server
connection = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
connection.connect((host, port))

def loop():
    print 'Enter message:'
    msg = raw_input()
    encoded = pickle.dumps(msg)
    connection.send(encoded)
    loop()
    
loop()