manager.py

import socket

from setting import manager_port, host

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((host, manager_port))
server.listen()

clients = []
ids = []
listen_ports = []

if __name__ == '__main__':
    while True:
        client, address = server.accept()
        print(f'connected with {address}')

        message_parts = client.recv(1024).decode('ascii').split(' ')
        print(message_parts)
        id, listen_port = message_parts[0], message_parts[8]

        if len(clients) == 0:
            answer = f'CONNECT TO {-1} WITH PORT {-1}'
        else:
            answer = f'CONNECT TO {ids[(len(ids) - 1) // 2]} WITH PORT {listen_ports[(len(listen_ports) - 1) // 2]}'
        client.send(answer.encode('ascii'))

        clients.append(client)
        ids.append(id)
        listen_ports.append(listen_port)