socket server using multithreading to catch keyboard interrupts

multithreaded-socket-server.py

# Thanks GratefulGuest from SO: 
# https://stackoverflow.com/questions/34871191/cant-close-socket-on-keyboardinterrupt

from multiprocessing import Pipe, Process
from socket import socket, AF_INET, SOCK_STREAM
from threading import Thread
import time

def detect_interrupt(conn):
    try:
        print("Listening for KeyboardInterrupt...")
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        print("Detected KeyboardInterrupt!")
        print("Sending IPC...")
        conn.send(True)
        conn.close()

def listen_for_interrupt(conn, sock):
    print("Listening for IPC...")
    conn.recv()
    print("Detected IPC!")
    print("Closing sock...")
    sock.close()

if __name__ == "__main__":

    sock = socket(AF_INET, SOCK_STREAM)
    sock.bind(("localhost", 7777))
    sock.listen(1)

    # Crate a Pipe for interprocess communication
    main_conn, detect_conn = Pipe()
    # Create a thread in main process to listen on connection
    listen_for_interrupt_thread = Thread(
        target=listen_for_interrupt, args=(main_conn, sock), daemon=True)
    listen_for_interrupt_thread.start()
    # Create a separate process to detect the KeyboardInterrupt
    detect_interrupt_process = Process(
        target=detect_interrupt, args=(detect_conn,))
    detect_interrupt_process.start()

    connection = None
    try:
        while True:
            print("Running socket accept()")
            connection, address = sock.accept()
            print("connected from " + address)
            received_message = sock.recv(300)
            if not received_message:
                break
            connection.sendall(b"hello")
    except KeyboardInterrupt:
        print("Handling KeyboardInterrupt")
        sock.close()
        if connection:
            connection.close()