dht added /ir get request for pinging

dht.js

@@ -244,9 +244,17 @@ app.post('/dht/ping', (req, res) => {  (async (res) => {
 });
 
 app.use('/ir', bodyParser.text(), function(rq, rs) {
+  if(rq.method == "GET")
+  {
+    var t = moment.duration(parseInt(req.param('uptime')), 'milliseconds');
+    var _message = req.param('ip') + " uptime " + t.hours() + "h " + t.minutes() + "m " + t.seconds() +"s";
+    console.log("watchdog from " + _message);
+    res.send("You are alive!");
+  }else{  
     console.log("REQ:"+rq.headers);
     console.log("BODY:"+rq.body);
     rs.sendStatus(200);
+  }
 });
 
 // app.post('/ir', (req, res) => {