The listen() method just allows incoming connections. my_socket.listen() client, client_address = my_socket.accept() Then we need to accept the incoming connection. Now our socket is ready, we can start listening for a connection. We let the address to '0.0.0.0' for now, since we don’t know what the client’s address is going to be. We create two constants called PORTand ADDRESSto hold the port and the address we are going to use.

Now the socket is created, we can bind it to a port and optionally an address.

Socket.AF_INET and socket.SOCK_STREAM are just constants defined in the socket module to choose the type of socket we want, you don’t need to understand what they mean to use them. Then let’s create our socket object: my_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

Once you have created your server.py file, we can start coding:įirst, we will import the module we need: import socket Once the connection is established, a socket can both listen and send messages, if a socket is sending and the other is listening, we will be able to exchange data between them. Primarily, a socket server needs to be initialized, then the client is going to connect directly to the server. It is not necessary to know how sockets work internally, it is just interesting to know that the python socket module uses the C socket library to exchange data across the network. Understanding Python Socketsīefore jumping into the code, we need to understand how do the sockets work. So are chatroom will work on LAN (Local Area Network). For a socket connection to work, both server and client need to be either on the same machine or in the same network. The clients are going to establish a socket connection with the server. Our chat app will be composed of a server and multiple clients. Hello everyone, today we are going to create a really simple chat room in Python 3 with the help of the socket and threading built-in modules.

Chat room programs