import socket

HOST = "127.0.0.1"  # Listen on all available interfaces
PORT = 4024  # Port to listen on (non-privileged ports are > 1023)

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.bind((HOST, PORT))
    s.listen()
    print(f"Server listening on {HOST}:{PORT}")
    conn, addr = s.accept()
    with conn:
        print(f"Connected by {addr}")
        conn.sendall(b"hallo\n")
        while True:
            data = conn.recv(2048)
            if data:
                print("Received:", repr(data))
                conn.sendall(b"message received\n")
            if not data:
                break