Python socket (Socket Error Bad File Descriptor)

Question

The following receiveFile() function reads a filename and file data from the socket and splits it using the delimiter $.

But I am unable to close the socket and a Bad file descriptor error is raised. If I comment out the self.server_socket.close() statement then there is no error but the socket is listening forever.

Code:-

def listen(self):
    self.server_socket.listen(10)
    while True:
        client_socket, address = self.server_socket.accept()
        print 'connected to', address
        self.receiveFile(client_socket)



def receiveFile(self,sock):
    data = sock.recv(1024)
    data = data.split("$");
    print 'filename', data[0]
    f = open(data[0], "wb")
    #data = sock.recv(1024)
    print 'the data is', data[1]
    f.write(data[1])
    data = sock.recv(1024)
    while (data):
        f.write(data)
        data=sock.recv(1024)
    f.close()
    self.server_socket.close()
    print 'the data is', data
    print "File Downloaded"

Traceback:-

Traceback (most recent call last):
  File "server.py", line 45, in <module>
    a = Server(1111)
  File "server.py", line 15, in __init__
    self.listen()
  File "server.py", line 20, in listen
    client_socket, address = self.server_socket.accept()
  File "c:\Python27\lib\socket.py", line 202, in accept
    sock, addr = self._sock.accept()
  File "c:\Python27\lib\socket.py", line 170, in _dummy
    raise error(EBADF, 'Bad file descriptor')
socket.error: [Errno 9] Bad file descriptor

Answer 1

You are closing the server's listening socket, and after that calling again accept() on it. To finish receiving one file you should close client connection's socket (sock in function receiveFile).