share device subscription between shadow of the same devieid

coordinator.js

@@ -16,20 +16,32 @@ const Coordinator = function(param={}) {
 			client.forward(topic, payload, options, topic, 0);
 		});
 		
-		that.remoteclient.subscribe(`->tap/shadow/${deviceid}:${client.token}`);
-		that.remoteclient.subscribe(`->tap/device/${deviceid}:${client.token}`);
+		if (!that.localserver.sublist[deviceid]) {
+			that.remoteclient.subscribe(`->tap/shadow/${deviceid}:${client.token}`);
+			that.remoteclient.subscribe(`->tap/device/${deviceid}:${client.token}`);
+			that.localserver.sublist[deviceid] = 1;
+		}
+		else{
+			that.localserver.sublist[deviceid]++;
+		}
 	});
 
 	this.localserver.on('clientDisconnected', function(client){
 		console.log('client disconnected', client.id);
 		let deviceid = client.id.split(':')[0];
 		
-		that.remoteclient.unsubscribe(`->tap/shadow/${deviceid}:${client.token}`);
-		that.remoteclient.unsubscribe(`->tap/device/${deviceid}:${client.token}`);
+		if (that.localserver.sublist[deviceid] == 1) {
+			that.remoteclient.unsubscribe(`->tap/shadow/${deviceid}:${client.token}`);
+			that.remoteclient.unsubscribe(`->tap/device/${deviceid}:${client.token}`);
+			that.localserver.sublist[deviceid] = 0;
+		}
+		else {
+			that.localserver.sublist[deviceid]--;
+		}
 	});
 
-
 	this.remoteclient.on('message', function(topic, payload){
+		//console.log(that.localserver.sublist);
 		let jsonpayload = {};
 		try {
 			jsonpayload = JSON.parse(payload.toString());