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You could use the "RaspberryPI" as Server

import br.com.criativasoft.opendevice.core.SimpleDeviceManager;
import br.com.criativasoft.opendevice.core.connection.Connections;
import br.com.criativasoft.opendevice.core.model.Device;
import br.com.criativasoft.opendevice.core.model.DeviceListener;
import br.com.criativasoft.opendevice.core.model.DeviceType;

public class RestControlDemo extends SimpleDeviceManager implements DeviceListener {
    public static void main(String[] args) throws Exception {
        new RestControlDemo();
    }
    public RestControlDemo() throws Exception {
        Device led = new Device(1, DeviceType.DIGITAL);
        // setup connection with arduino/hardware
        addOutput(Connections.out.usb()); // Connect to first USB port available
        // Configure a Rest interface for receiving commands over HTTP
        addInput(Connections.in.rest(8181));
        addListener(this); // monitor changes on devices
        connect();
        addDevice(led);
    }
    // ------------- DeviceListener Impl --------------------------
    // ------------------------------------------------------------
    @Override
    public void onDeviceChanged(Device device) {
        System.out.println("DeviceChanged = " + device);
    }

}