how to receive broadcast and reply to broadcast sender by using enet

once a client send broadcast to all host server in a same subnet, how can servers recevice the broadcast infomation and make reply to the client

who has send the broadcast?

client :

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void scan_servers_by_send_broadcast()
{
ENETAddress address;


    address.host = ENET_HOST_BROADCAST;
    address.port = BROADCAST_PORT


ENETSocket socket = ENET_socket_create(ENET_SOCKET_TYPE_DATAGRAM);
ENET_socket_set_option(socket,ENET_SOCKOPT_NONBLOCK,1);
ENET_socket_set_option(socket,ENET_SOCKOPT_BROADCAST,1);


ENET_socket_send(socket,address,&broadcast_buf,1);
ENET_socket_destroy(socket);
}

servers:

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[Q: How can a server received broadcast information and tell client its ip address ?]

ENETSocket socket = ENET_socket_create(ENET_SOCKET_TYPE_DATAGRAM);
ENET_socket_set_option(socket,ENET_SOCKOPT_NONBLOCK,1);
ENET_socket_set_option(socket,ENET_SOCKOPT_REUSEADDR,1);
ENET_socket_set_option(socket,ENET_SOCKOPT_BROADCAST,1);


ENETAddress serv_addr;
    serv_addr.host=ENET_HOST_ANY;
    serv_addr.port=BROADCAST_PORT;      // IS THIS RIGHT?
ENET_socket_bind(socket,&serv_addr);
...........

I DON'T KNOW WHAT SHOULD DO AFTER BINDING,,,,, HELP ME PLEASE ,THANKS/...

any more, does BROADCAST_PORT shold be different from the SERVER_MAIN_SERVICE_PORT ?