ESP8266 auto discovery

[gaetancollaud]

First thing, thank you for your work. I had the exact same issues as you before finding this repo.

Have you already though about ESP8266 auto discovery (instead of manually set the ip address) ? This can easily be done by using UDP multicast address. By easy I mean this kind of protocol exists, I have no idea if it can be implemented in LUA nor PHP.

I'm more of a Java person, so if it's available in LUA but not PHP I can make a webapp using Java.

[gaetancollaud]

After some investigations, I found the mDNS protocol. NodeMCU implement it but it's currently in development and there is no official release yet. I tested it out and it seems to work well.

mdns.register("wifi_manager")

I made a simple Java app to discover the esp8266. It's really easy. Unfortunately for PHP I only found a lib that use ReactPHP...

JmDNS jmDns = JmDNS.create(InetAddress.getByName("0.0.0.0"));
jmDns.addServiceListener("_http._tcp.local.", new ServiceListener() {
    @Override
    public void serviceAdded(ServiceEvent serviceEvent) {
        System.out.println("Service added "+serviceEvent);
    }

    @Override
    public void serviceResolved(ServiceEvent serviceEvent) {
        System.out.println("Service resolved "+serviceEvent);
    }

    @Override
    public void serviceRemoved(ServiceEvent serviceEvent) {
        System.out.println("Service removed "+serviceEvent);
    }
});

[wchpikus]

hi
i add like this:
....
$chipdata = file("controllerIP.txt"); // reads IP number for ESP
$chipIP = $_SERVER['REMOTE_ADDR'];
$uploadfiles = scandir("./filebin"); // reads the /filebin dir and puts all files in an array.
echo "

"; // writes updated IP
echo "Target Controller IP:  ";
echo "";
echo "";
echo "
";

echo $_SERVER['REMOTE_ADDR'];
....
and now in box and bellow i see the ip address