Mastering Python for Networking and Security

Creating a server and client with sockets

To create a socket, the socket.socket() constructor is used, which can take the family, type, and protocol as optional parameters. By default, the AF_INET family and the SOCK_STREAM type are used.

In this section, we will see how to create a couple of client and server scripts as an example.

The first thing we have to do is create a socket object for the server:

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

We now have to indicate on which port our server will listen using the bind method. For IP sockets, as in our case, the bind argument is a tuple that contains the host and the port. The host can be left empty, indicating to the method that you can use any name that is available.