Eddited files to comply with part3

client.py

@@ -2,41 +2,34 @@ import socket
 import threading
 
 
-# function for messages from server
-def receive_server(s):
+# this function is for receiving messages from the server (broadcasted from the other clients)
+def receive_messages(s):
     while True:
-        # the try block makes it not error when it dissconnects
         try:
             message = s.recv(1024).decode()
             if not message:
-                print("\nServer closed the connection")
+                print("\nDisconnected from server.")
                 break
-            print(f"\nServer: {message}")
+            # overwrites the current line to keep the UI clean
+            print(f"\rIncoming: {message}")
+            print("You: ", end="", flush=True)
         except:
-            print("\nDisconnected from server.")
+            print("\nConnection lost.")
             break
 
 
-
-#create socket
 client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-#connect to server
 client_socket.connect(("localhost", 12345))
-print("Connected to server.")
-print("Type 'quit' to exit.")
+print("Connected to Group Chat.")
 
-
-# starts the recieving thread
-receive_thread = threading.Thread(target=receive_server, args=(client_socket,))
+# thread to listen for messages while we are typing
+receive_thread = threading.Thread(target=receive_messages, args=(client_socket,))
 receive_thread.start()
 
-
-# loop for sending the messages
 while True:
-    msg = input()
-    if msg.lower() == 'quit':
+    msg = input("You: ")
+    if msg.lower() == "quit":
         break
     client_socket.send(msg.encode())
 
-#close connection
-client_socket.close()
+client_socket.close()

readme.txt

@@ -1,7 +1,6 @@
 How to run code:
 
 First run server.py in the terminal
-Next run client.py on a seperate terminal
+Next run client.py on a seperate terminal for every user you want
 
-Now that you have established a connection you can send messages to eachother until you want to stop
-To end the connection type 'quit' on either side to end the connction
+Now that you have established a connection you can send messages between the clients until you want to stop

server.py

@@ -1,53 +1,59 @@
 import socket
 import threading
 
-# this function recieves the thread
-def receive_messages(connection):
+# list to keep track of all connected client sockets
+clients = []
+
+
+# this function handles communication with a specific client
+def handle_client(connection, address):
     while True:
-        # the try block makes it not error when it dissconnects
         try:
-            # this waits for the message from client
+            # receives message from this specific client
             message = connection.recv(1024).decode()
             if not message:
-                # if the client closes the connection its empty
-                print("\nClient Disconnected")
                 break
+
+            print(f"Message from {address}: {message}")
+
+            # broadcasts this message to all OTHER clients
+            broadcast(message, connection)
         except:
-            print("\nConnection closed.")
             break
-        
-        # the 'flush' fixes the outputs overriding each other in terminal
-        print(f"\nClient: {message}")
+
+    # cleans up when client disconnects
+    print(f"Client {address} disconnected.")
+    if connection in clients:
+        clients.remove(connection)
+    connection.close()
 
 
-# the function for 
-def send_messages(connection):
-    while True:
-        # this waits for you to type
-        message = input()
-        if message.lower() == 'quit':
-            connection.close()
-            break
-        connection.send(message.encode())
-        
+# the function to send a message to everyone except the sender
+def broadcast(message, sender_connection):
+    for client in clients:
+        if client != sender_connection:
+            try:
+                client.send(message.encode())
+            except:
+                client.close()
+                if client in clients:
+                    clients.remove(client)
 
 
-#create socket
+# creates and sets up socket
 server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-#give socket port and address
+server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 server_socket.bind(("localhost", 12345))
-#listen for connections
 server_socket.listen()
-print("Server is waiting for connection...")
+print("Server started. Waiting for multiple clients...")
 
-#accept connection
-conn, addr = server_socket.accept()
-print("Connected to:", addr)
+# the main loop to accept new connections
+while True:
+    conn, addr = server_socket.accept()
+    print(f"Connected to: {addr}")
 
-# the two threads for the inputs
-receive_thread = threading.Thread(target=receive_messages, args=(conn,))
-send_thread = threading.Thread(target=send_messages, args=(conn,))
+    clients.append(conn)
 
-# starts the process
-receive_thread.start()
-send_thread.start()
+    # starts a new thread for every new client
+    thread = threading.Thread(target=handle_client, args=(conn, addr))
+    thread.start()