Python Chat app

chat.py

import socket
import threading

# define the host and port for the chat server
HOST = 'localhost'
PORT = 12345

# create a new socket for the chat server
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server.bind((HOST, PORT))
server.listen()

# create a list to store connected clients
clients = []

# define a function to handle incoming messages
def handle_message(client, address):
  while True:
    # receive the message from the client
    message = client.recv(1024).decode('utf-8')

    # broadcast the message to all connected clients
    for c in clients:
      c.sendall(f'{address}: {message}'.encode('utf-8'))

# run the chat server
print(f'Running chat server on {HOST}:{PORT}')
while True:
  # accept incoming connections from clients
  client, address = server.accept()
  print(f'New client connected: {address}')

  # add the new client to the list of connected clients
  clients.append(client)

  # start a new thread to handle incoming messages from the client
  thread = threading.Thread(target=handle_message, args=(client, address))
  thread.start()