added page latency

app.js

@@ -30,6 +30,8 @@ var client = new Primus(server, {
     parser: 'JSON'
 });
 
+var clientLatency = 0;
+
 client.use('emit', require('primus-emit'));
 
 api.on('connection', function(spark) {
@@ -115,7 +117,17 @@ client.on('connection', function(spark) {
 
         spark.emit('init', {nodes: Nodes.all()});
     });
+
+    spark.on('client-pong', function(data) {
+        var latency = Math.ceil(((new Date()).getTime() - clientLatency)/2);
+        spark.emit('client-latency', { latency: latency });
     });
+});
+
+var latencyTimeout = setInterval(function(){
+    clientLatency = (new Date()).getTime();
+    client.write({action: 'client-ping'});
+}, 5000);
 
 // view engine setup
 app.set('views', path.join(__dirname, 'views'));

public/css/style.css

@@ -58,6 +58,10 @@ body {
 .big-info span.small-title,
 .big-info div.small-title-miner {
 	display: block;
+}
+
+span.small-title,
+div.small-title-miner {
 	font-weight: 700;
 	font-size: 14px;
 	line-height: 20px;
@@ -116,6 +120,18 @@ body {
 	float: left;
 	-webkit-border-radius: 1px;
 	border-radius: 1px;
+	opacity: .8;
+}
+
+.page-latency {
+	position: absolute;
+	top: 400px;
+	left: 15px;
+}
+
+.page-latency .small-title {
+	letter-spacing: 0px;
+	opacity: .8;
 }
 
 .jqstooltip {

public/js/controllers.js

@@ -25,6 +25,8 @@ function StatsCtrl($scope, $filter, socket, _, toastr) {
 	$scope.nodes = [];
 	$scope.map = [];
 
+	$scope.latency = 0;
+
 	$scope.predicate = 'info.name';
 	$scope.reverse = false;
 
@@ -76,6 +78,11 @@ function StatsCtrl($scope, $filter, socket, _, toastr) {
 		socketAction("init", data.nodes);
 	});
 
+	socket.on('client-latency', function(data)
+	{
+		$scope.latency = data.latency;
+	})
+
 	function socketAction(action, data)
 	{
 		console.log('Action: ', action);
@@ -111,6 +118,10 @@ function StatsCtrl($scope, $filter, socket, _, toastr) {
 			case "latency":
 				$scope.nodes[findIndex({id: data.id})].stats.latency = data.latency;
 				break;
+
+			case "client-ping":
+				socket.emit('client-pong');
+				break;
 		}
 
 		updateStats();

views/index.jade

@@ -2,6 +2,9 @@ extends layout
 
 block content
   div.container-fluid(ng-controller='StatsCtrl')
+    div.page-latency
+      span.small-title page latency:#[ ]
+      span(class="{{ {active: true, latency: latency} | latencyClass }}") {{latency}} ms
     div.row(ng-cloak)
       div.col-xs-2.stat-holder
         div.big-info.nodesactive(class="{{ nodesActive | nodesActiveClass : nodesTotal }}")
@@ -119,7 +122,7 @@ block content
               i.icon-network(data-toggle="tooltip", data-placement="top", title="Pending transactions", ng-click="orderTable('-stats.pending', false)")
             th
               i.icon-block(data-toggle="tooltip", data-placement="top", title="Last block", ng-click="orderTable(['-stats.block.number', 'stats.block.propagation'], false)")
-            th.th-blockhash  
+            th.th-blockhash #[ ]
             th
               i.icon-check-o(data-toggle="tooltip", data-placement="top", title="Block transactions", ng-click="orderTable('-stats.block.transactions.length', false)")
             th.th-blocktime
@@ -132,7 +135,7 @@ block content
           tr(ng-repeat='node in nodes | orderBy:predicate:reverse', class="{{ node.stats | mainClass : bestBlock }}")
             td(rel="{{node.id}}")
               span.small(data-toggle="tooltip", data-placement="top", data-original-title="{{node.geo | geoTooltip}}") {{node.info.name}}
-              span.small &nbsp({{node.info.ip}})
+              span.small #[ ]({{node.info.ip}})
             td
               div.small(ng-bind-html="node.info.node | nodeVersion")
               //- div.small {{node.info.os}}, {{node.info.os_v}}