To what port number should be bind the server to ?

aww.. where is the .NET love? c# or f#? or even javascript would be nice

Answer:

Python

def write_string_to_socket(connection, message): connection.send(message)

def read_string_from_socket(connection): return connection.recv(1024)

def process_client_connection(connection):

while True:
    # read message 
    message = read_string_from_socket(connection)

    print "Message received = ", message
    sys.stdout.flush()


    if message == "END":
        break
    write_string_to_socket(connection, message)

Can you provide some helper functions for Java as for C/C++?

Python: I had difficulty understanding what it wants me to do.

It simply wants you to define the methods read_string_from_socket, write_string_to_socket to call the appropriate methods on the socket. The socket is created, bound, etc for you and is passed to you as 'connection'.

The same thing (socket.send(), socket.recv(size)) works in Python 2 but not Python 3 - can someone tell me what has changed?