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- #!/usr/bin/env python3
- """Script for Tkinter GUI chat client."""
- from socket import AF_INET, socket, SOCK_STREAM
- from threading import Thread
- import tkinter
- def receive():
- """Handles receiving of messages."""
- while True:
- try:
- msg = client_socket.recv(BUFSIZ).decode("utf8")
- msg_list.insert(tkinter.END, msg)
- except OSError: # Possibly client has left the chat.
- break
- def send(event=None): # event is passed by binders.
- """Handles sending of messages."""
- msg = my_msg.get()
- my_msg.set("") # Clears input field.
- client_socket.send(bytes(msg, "utf8"))
- if msg == "{quit}":
- client_socket.close()
- top.quit()
- def on_closing(event=None):
- """This function is to be called when the window is closed."""
- my_msg.set("{quit}")
- send()
- top = tkinter.Tk()
- top.title("Chatter")
- messages_frame = tkinter.Frame(top)
- my_msg = tkinter.StringVar() # For the messages to be sent.
- my_msg.set("Type your messages here.")
- scrollbar = tkinter.Scrollbar(messages_frame) # To navigate through past messages.
- # Following will contain the messages.
- msg_list = tkinter.Listbox(messages_frame, height=15, width=50, yscrollcommand=scrollbar.set)
- scrollbar.pack(side=tkinter.RIGHT, fill=tkinter.Y)
- msg_list.pack(side=tkinter.LEFT, fill=tkinter.BOTH)
- msg_list.pack()
- messages_frame.pack()
- entry_field = tkinter.Entry(top, textvariable=my_msg)
- entry_field.bind("<Return>", send)
- entry_field.pack()
- send_button = tkinter.Button(top, text="Send", command=send)
- send_button.pack()
- top.protocol("WM_DELETE_WINDOW", on_closing)
- #----Now comes the sockets part----
- HOST = input('Enter host: ')
- PORT = input('Enter port: ')
- if not PORT:
- PORT = 33000
- else:
- PORT = int(PORT)
- BUFSIZ = 1024
- ADDR = (HOST, PORT)
- client_socket = socket(AF_INET, SOCK_STREAM)
- client_socket.connect(ADDR)
- receive_thread = Thread(target=receive)
- receive_thread.start()
- tkinter.mainloop() # Starts GUI execution.
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