From d55e79c4f5923b1a4723842374081d4686a4ce1e Mon Sep 17 00:00:00 2001
From: Cornelius Suermann <cornelius.suermann@gmail.com>
Date: Fri, 25 Oct 2024 17:35:08 +0200
Subject: [PATCH] fix(connection): Retry establishing a connection when
 Node-RED starts up offline; fixes #265

---
 MqttClient.js | 6 +++++-
 connection.js | 7 +++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/MqttClient.js b/MqttClient.js
index f7b5e8e..3a11880 100644
--- a/MqttClient.js
+++ b/MqttClient.js
@@ -54,7 +54,11 @@ class MqttClient extends EventEmitter {
   }
 
   async end() {
-    return this.client.endAsync()
+    try {
+      return this.client.endAsync()
+    } catch (err) {
+      return false
+    }
   }
 
   async publish(topic, json) {
diff --git a/connection.js b/connection.js
index d441998..be50eb1 100644
--- a/connection.js
+++ b/connection.js
@@ -726,10 +726,13 @@ module.exports = function (RED) {
           return
         }
       } catch (e) {
-        this.errorCode =
-          'version check failed. Ensure internet connectivity and restart the flow'
+        this.errorCode = 'Connection failed'
         this.isError = true
         this.refreshChildrenNodeStatus()
+
+        //retry again in 30s:
+        setTimeout(() => this.connectAndSubscribe(), 30_000)
+
         return this.logger(`version check failed! ${e.message}`, null, 'error')
       }