[FIXED] Printing server output data in tkinter Text widget

Issue

I have a Tkinter text widget and I want to capture and put a server output in it.

Project folder:

project
| main.py
| servers_folder
| | default_server.py

In my main. I'm importing default_server.py with server = importlib.import_module('default_server.py'). It has to be another file tho.

main.py code:

def connect(server_name):
    for widget in frame.winfo_children():
        widget.grid_forget()

    def run():
        server = importlib.import_module(server_name)
        server.Server().start()

    command = Text(frame)
    command.grid(row=0, column=0)

    thread = t.Thread(target=run)
    thread.start()


Label(frame, text='Server name:').grid(row=0, column=0)
server_name = Entry(frame)
server_name.grid(row=0, column=1, sticky='NSEW')
Button(frame, text='Run server', command=lambda: connect(server_name.get())).grid(row=1, column=0, columnspan=2)

Server start function:

def start(self):
    print('[STARTING] Server is starting...')
    self.server.listen()
    print(f'[LISTENING] Server is listening on {self.SERVER}')
    while True:
        conn, addr = self.server.accept()
        thread = t.Thread(target=self.handle_client, args=(conn, addr))
        thread.start()

Server handle_client function:

def handle_client(self, conn, addr):
    print(f'[NEW CONNECTION] {addr} connected.')
    print(f'[ACTIVE CONNECTIONS] {t.active_count() - 1}')

    connected = True
    while connected:
        msg_lenght = conn.recv(self.HEADER).decode(self.FORMAT)
        if msg_lenght:
            msg_lenght = int(msg_lenght)
            msg = conn.recv(msg_lenght).decode(self.FORMAT)
            if msg == self.DISCONNECT_MESSAGE:
                connected = False

            print(f'[MESSAGE RECIEVED] FROM: {addr}; Message: {msg}')
            conn.send('Message received!'.encode(self.FORMAT))

    conn.close()

How can I display server output in my tkinter text widget?

Thanks for help!

Solution

It would be easily for me to see the full code, but I think you can do something similar to this:

def start(self, msg_callback):
    print('[STARTING] Server is starting...')
    self.msg_callback = msg_callback
    self.server.listen()
    print(f'[LISTENING] Server is listening on {self.SERVER}')
    while True:
        conn, addr = self.server.accept()
        thread = t.Thread(target=self.handle_client, args=(conn, addr))
        thread.start()


def handle_client(self, conn, addr):
    print(f'[NEW CONNECTION] {addr} connected.')
    print(f'[ACTIVE CONNECTIONS] {t.active_count() - 1}')

    connected = True
    while connected:
        msg_lenght = conn.recv(self.HEADER).decode(self.FORMAT)
        if msg_lenght:
            msg_lenght = int(msg_lenght)
            msg = conn.recv(msg_lenght).decode(self.FORMAT)
            self.msg_callback(msg)
            if msg == self.DISCONNECT_MESSAGE:
                connected = False

            print(f'[MESSAGE RECIEVED] FROM: {addr}; Message: {msg}')
            conn.send('Message received!'.encode(self.FORMAT))

    conn.close()


def connect(server_name):
    for widget in frame.winfo_children():
        widget.grid_forget()

    command = Text(frame)
    command.grid(row=0, column=0)
    
    def msg_callback(msg):
        command.delete('1.0', END)
        command.insert('1.0', msg)

    def run():
        server = importlib.import_module(server_name)
        server.Server().start(msg_callback)

    thread = t.Thread(target=run)
    thread.start()


Label(frame, text='Server name:').grid(row=0, column=0)
server_name = Entry(frame)
server_name.grid(row=0, column=1, sticky='NSEW')
Button(frame, text='Run server', command=lambda: connect(server_name.get())).grid(row=1, column=0, columnspan=2)

Answered By - mbostic