From 9b6ce7563a2d8876f71ce113f402b61a24e8cdc6 Mon Sep 17 00:00:00 2001
From: Jozef Sovcik <jozef.sovcik@gmail.com>
Date: Wed, 24 Oct 2018 08:17:37 +0200
Subject: [PATCH] added example for heartbeat

---
 examples/esp8266/WebSocketClient/WebSocketClient.ino | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/esp8266/WebSocketClient/WebSocketClient.ino b/examples/esp8266/WebSocketClient/WebSocketClient.ino
index 3ce8498..86fc241 100644
--- a/examples/esp8266/WebSocketClient/WebSocketClient.ino
+++ b/examples/esp8266/WebSocketClient/WebSocketClient.ino
@@ -84,6 +84,12 @@ void setup() {
 
 	// try ever 5000 again if connection has failed
 	webSocket.setReconnectInterval(5000);
+  
+  // start heartbeat (optional)
+  // ping server every 15000 ms
+  // expect pong from server within 3000 ms
+  // consider connection disconnected if pong is not received 2 times
+  webSocket.enableHeartbeat(15000, 3000, 2);
 
 }