How can I send data from thread to Gtk app?

I have the following code:

import socket
from queue import Queue
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk, GLib
import threading


HOST = ''  # Listen on all available network interfaces
PORT = 5000  # Arbitrary port number

def socket_server(queue):
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind((HOST, PORT))
    server_socket.listen(1)
    print('Listening for incoming connections...')
    while True:
        client_socket, client_address = server_socket.accept()
        data = client_socket.recv(1024)
        print(f'Received data from client: {data.decode()}')
        queue.put(data.decode())
        client_socket.close()


class MyWindow(Gtk.Window):
    def __init__(self, queue):
        self.queue = queue
        Gtk.Window.__init__(self, title="GTK App")
        self.set_default_size(400, 300)
        self.label = Gtk.Label(label="Welcome to the GTK App!")
        self.add(self.label)

    def set_label_text(self):
        text = self.queue.get()
        self.label.set_text(text)


if __name__ == '__main__':
    q = Queue()
    socket_thread = threading.Thread(target=socket_server, args=(q,))
    socket_thread.start()
    win = MyWindow(q)
    win.connect("destroy", Gtk.main_quit)
    win.show_all()
    Gtk.main()

The programs basically runs a socket server on a thread and a gtk app on the main thread. What I'm trying to do is to, every time the socket receives a request, to send the message recived to the gtk app and the gtk app update his label with that message. I'm trying to do it with queue but I'm stuck on self.queue.get() because I can't figure how to watch for messages without block GTK Main loop. How can I watch for queue messages without blocking the main gtk loop, are there better approaches to this?

after you add an item in the queue, call GLib.idle_add from the child thread to have a function execute in the main thread.

this is mentioned in the PyGObject threads documentation

def socket_server(queue):
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind((HOST, PORT))
    server_socket.listen(1)
    print('Listening for incoming connections...')
    while True:
        client_socket, client_address = server_socket.accept()
        data = client_socket.recv(1024)
        print(f'Received data from client: {data.decode()}')
        queue.put(data.decode())
        client_socket.close()
        GLib.idle_add(win.update_gui_from_queue)  # this line


class MyWindow(Gtk.Window):
    ...
    def update_gui_from_queue(self):
        q.get()
        # do what you want with the data
        return False  # to stop repetition