Prerequisites: Tkinter , Socket Programming and Multithreading
This is a simple GUI (Graphical User Interface) chat application where multiple users can connect with each other in a client-server architecture i.e the clients will interact with the help of the server.
Server Side Script: This script file name is ‘client.py'(say) .
Since only the clients will interact the server script does not have a GUI
Python3
# import socket library import socket # import threading library import threading # Choose a port that is free PORT = 5000 # An IPv4 address is obtained # for the server. SERVER = socket.gethostbyname(socket.gethostname()) # Address is stored as a tuple ADDRESS = (SERVER, PORT) # the format in which encoding # and decoding will occur FORMAT = "utf-8" # Lists that will contains # all the clients connected to # the server and their names. clients, names = [], [] # Create a new socket for # the server server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # bind the address of the # server to the socket server.bind(ADDRESS) # function to start the connection def startChat(): print("server is working on " + SERVER) # listening for connections server.listen() while True: # accept connections and returns # a new connection to the client # and the address bound to it conn, addr = server.accept() conn.send("NAME".encode(FORMAT)) # 1024 represents the max amount # of data that can be received (bytes) name = conn.recv(1024).decode(FORMAT) # append the name and client # to the respective list names.append(name) clients.append(conn) print(f"Name is :{name}") # broadcast message broadcastMessage(f"{name} has joined the chat!".encode(FORMAT)) conn.send('Connection successful!'.encode(FORMAT)) # Start the handling thread thread = threading.Thread(target = handle, args = (conn, addr)) thread.start() # no. of clients connected # to the server print(f"active connections {threading.activeCount()-1}") # method to handle the # incoming messages def handle(conn, addr): print(f"new connection {addr}") connected = True while connected: # recieve message message = conn.recv(1024) # broadcast message broadcastMessage(message) # close the connection conn.close() # method for broadcasting # messages to the each clients def broadcastMessage(message): for client in clients: client.send(message) # call the method to # begin the communication startChat() |
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Client-Side Script:
Python3
# import all the required modules import socket import threading from tkinter import *from tkinter import font from tkinter import ttk # import all functions / # everthing from chat.py file from chat import * PORT = 5050SERVER = "192.168.0.103"ADDRESS = (SERVER, PORT) FORMAT = "utf-8" # Create a new client socket # and connect to the server client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) client.connect(ADDRESS) # GUI class for the chat class GUI: # constructor method def __init__(self): # chat window which is currently hidden self.Window = Tk() self.Window.withdraw() # login window self.login = Toplevel() # set the title self.login.title("Login") self.login.resizable(width = False, height = False) self.login.configure(width = 400, height = 300) # create a Label self.pls = Label(self.login, text = "Please login to continue", justify = CENTER, font = "Helvetica 14 bold") self.pls.place(relheight = 0.15, relx = 0.2, rely = 0.07) # create a Label self.labelName = Label(self.login, text = "Name: ", font = "Helvetica 12") self.labelName.place(relheight = 0.2, relx = 0.1, rely = 0.2) # create a entry box for # tyoing the message self.entryName = Entry(self.login, font = "Helvetica 14") self.entryName.place(relwidth = 0.4, relheight = 0.12, relx = 0.35, rely = 0.2) # set the focus of the curser self.entryName.focus() # create a Continue Button # along with action self.go = Button(self.login, text = "CONTINUE", font = "Helvetica 14 bold", command = lambda: self.goAhead(self.entryName.get())) self.go.place(relx = 0.4, rely = 0.55) self.Window.mainloop() def goAhead(self, name): self.login.destroy() self.layout(name) # the thread to receive messages rcv = threading.Thread(target=self.receive) rcv.start() # The main layout of the chat def layout(self,name): self.name = name # to show chat window self.Window.deiconify() self.Window.title("CHATROOM") self.Window.resizable(width = False, height = False) self.Window.configure(width = 470, height = 550, bg = "#17202A") self.labelHead = Label(self.Window, bg = "#17202A", fg = "#EAECEE", text = self.name , font = "Helvetica 13 bold", pady = 5) self.labelHead.place(relwidth = 1) self.line = Label(self.Window, width = 450, bg = "#ABB2B9") self.line.place(relwidth = 1, rely = 0.07, relheight = 0.012) self.textCons = Text(self.Window, width = 20, height = 2, bg = "#17202A", fg = "#EAECEE", font = "Helvetica 14", padx = 5, pady = 5) self.textCons.place(relheight = 0.745, relwidth = 1, rely = 0.08) self.labelBottom = Label(self.Window, bg = "#ABB2B9", height = 80) self.labelBottom.place(relwidth = 1, rely = 0.825) self.entryMsg = Entry(self.labelBottom, bg = "#2C3E50", fg = "#EAECEE", font = "Helvetica 13") # place the given widget # into the gui window self.entryMsg.place(relwidth = 0.74, relheight = 0.06, rely = 0.008, relx = 0.011) self.entryMsg.focus() # create a Send Button self.buttonMsg = Button(self.labelBottom, text = "Send", font = "Helvetica 10 bold", width = 20, bg = "#ABB2B9", command = lambda : self.sendButton(self.entryMsg.get())) self.buttonMsg.place(relx = 0.77, rely = 0.008, relheight = 0.06, relwidth = 0.22) self.textCons.config(cursor = "arrow") # create a scroll bar scrollbar = Scrollbar(self.textCons) # place the scroll bar # into the gui window scrollbar.place(relheight = 1, relx = 0.974) scrollbar.config(command = self.textCons.yview) self.textCons.config(state = DISABLED) # function to basically start the thread for sending messages def sendButton(self, msg): self.textCons.config(state = DISABLED) self.msg=msg self.entryMsg.delete(0, END) snd= threading.Thread(target = self.sendMessage) snd.start() # function to receive messages def receive(self): while True: try: message = client.recv(1024).decode(FORMAT) # if the messages from the server is NAME send the client's name if message == 'NAME': client.send(self.name.encode(FORMAT)) else: # insert messages to text box self.textCons.config(state = NORMAL) self.textCons.insert(END, message+"\n\n") self.textCons.config(state = DISABLED) self.textCons.see(END) except: # an error will be printed on the command line or console if there's an error print("An error occured!") client.close() break # function to send messages def sendMessage(self): self.textCons.config(state=DISABLED) while True: message = (f"{self.name}: {self.msg}") client.send(message.encode(FORMAT)) break # create a GUI class object g = GUI() |
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OUTPUT :
Login Window :
CLIENT 1 :
CLIENT 2 :
CLIENT 3 :
SERVER :
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