Develop a TCP Chat Room Using Python | Cybersecurity & Python Beginner Project
Welcome to Vathos Technologies!
In this tutorial, you'll learn how to build a simple "TCP Chat Room" using "Python sockets". This project will help you understand how client-server communication works over TCP.
💡 What You'll Learn:
Basics of TCP/IP networking
Python socket programming
How to create a chat server
How multiple clients can join and chat in real time
📁 Project Type: Networking / Cybersecurity Project
👨💻 Level: Beginner-friendly
📌 Code + Demo Included
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SERVER SCRIPT
import socket
import threading
Connection Data
host = '127.0.0.1'
port = 55555
Starting Server
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((host, port))
server.listen()
Lists For Clients and Their Nicknames
clients = []
nicknames = []
Sending Messages To All Connected Clients
def broadcast(message):
for client in clients:
client.send(message)
Handling Messages From Clients
def handle(client):
while True:
try:
Broadcasting Messages
message = client.recv(1024)
broadcast(message)
except:
Removing And Closing Clients
index = clients.index(client)
clients.remove(client)
client.close()
nickname = nicknames[index]
broadcast('{} left!'.format(nickname).encode('ascii'))
nicknames.remove(nickname)
break
Receiving / Listening Function
def receive():
while True:
Accept Connection
client, address = server.accept()
print("Connected with {}".format(str(address)))
Request And Store Nickname
client.send('NICK'.encode('ascii'))
nickname = client.recv(1024).decode('ascii')
nicknames.append(nickname)
clients.append(client)
Print And Broadcast Nickname
print("Nickname is {}".format(nickname))
broadcast("{} joined!".format(nickname).encode('ascii'))
client.send('Connected to server!'.encode('ascii'))
Start Handling Thread For Client
thread = threading.Thread(target=handle, args=(client,))
thread.start()
print("server is listening...")
receive()
CLIENT SCRIPT
import socket
import threading
Choosing Nickname
nickname = input("Choose your nickname: ")
Connecting To Server
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', 55555))
Listening to Server and Sending Nickname
def receive():
while True:
try:
Receive Message From Server
If 'NICK' Send Nickname
message = client.recv(1024).decode('ascii')
if message == 'NICK':
client.send(nickname.encode('ascii'))
else:
print(message)
except:
Close Connection When Error
print("An error occured!")
client.close()
break
Sending Messages To Server
def write():
while True:
message = '{}: {}'.format(nickname, input(''))
client.send(message.encode('ascii'))
Starting Threads For Listening And Writing
receive_thread = threading.Thread(target=receive)
receive_thread.start()
write_thread = threading.Thread(target=write)
write_thread.start()
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