From 52b838b421ecc55fc1c778e1d1edbe395d56c854 Mon Sep 17 00:00:00 2001
From: Eric Fernandez <efernandez@focasoftware.com>
Date: Fri, 23 Aug 2019 14:47:23 -0300
Subject: [PATCH] ping pong

---
 webSocketServer/index.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/webSocketServer/index.js b/webSocketServer/index.js
index 0cc7ee1..5e5890b 100644
--- a/webSocketServer/index.js
+++ b/webSocketServer/index.js
@@ -9,9 +9,17 @@ module.exports = function() {
     port: config.port
   });
 
+  function noop() {}
+
+  function heartbeat() {
+    this.isAlive = true;
+  }
+
   objWs.wsServer.on('connection', function connection(ws) {
 
     console.log('open socket server');
+    ws.isAlive = true;
+    ws.on('pong', heartbeat);
 
     ws.on('message', function incoming(message) {
 
@@ -27,6 +35,15 @@ module.exports = function() {
     });
   });
 
+  const interval = setInterval(function ping() {
+    objWs.wsServer.clients.forEach(function each(ws) {
+      if (ws.isAlive === false) return ws.terminate();
+  
+      ws.isAlive = false;
+      ws.ping(noop);
+    });
+  }, 10000);
+
   objWs.getEntidad = function(gln, tableName, where, queryString) {
 
     return new Promise(function(resolve, reject) {
-- 
1.9.1