#Send all requests to apache
location / {
    proxy_pass http://127.0.0.1:81;
}

http {
    server {
        listen MY_IP:8888;
        server_name MY_IP;

        location / {
            proxy_pass http://127.0.0.1:8888;
        }
    }

    server {
        listen MY_IP:80;

        # Send all requests to btsync.
        location / {
            proxy_pass      http://127.0.0.1:81;
        }
    }
}