Merge pull request #28 from cubedro/develop

Added ping

lib/node.js

@@ -31,6 +31,8 @@ var socket = new Socket(process.env.WS_SERVER || 'ws://localhost:3000');
 var WS_SECRET = process.env.WS_SECRET || "eth-net-stats-has-a-secret";
 
 var MAX_BLOCKS_HISTORY = 36;
+var UPDATE_INTERVAL = 5000;
+var PING_INTERVAL = 2000;
 
 function Node()
 {
@@ -86,6 +88,7 @@ function Node()
 	this.pendingFilter = false;
 	this.chainFilter = false;
 	this.updateInterval = false;
+	this.pingInterval = false;
 
 	socket.on('open', function open() {
 		socket.emit('hello', { id: self.id, info: self.info, secret: WS_SECRET });
@@ -354,6 +357,11 @@ Node.prototype.update = function()
 	return this.stats;
 };
 
+Node.prototype.ping = function()
+{
+	this.emit('node-ping', '');
+};
+
 Node.prototype.setWatches = function()
 {
 	var self = this;
@@ -370,7 +378,11 @@ Node.prototype.setWatches = function()
 
 	this.updateInterval = setInterval(function(){
 		self.update();
-	}, 5000);
+	}, UPDATE_INTERVAL);
+
+	this.pingInterval = setInterval(function(){
+		self.ping();
+	}, PING_INTERVAL);
 }
 
 Node.prototype.emit = function(message, payload)
@@ -400,6 +412,9 @@ Node.prototype.stop = function()
 	if(this.updateInterval)
 		clearInterval(this.updateInterval);
 
+	if(this.pingInterval)
+		clearInterval(this.pingInterval);
+
 	web3.reset();
 }