From 640b6e5b1c587b14d1146a392d953e551b5b34f9 Mon Sep 17 00:00:00 2001
From: Louis Lam <louislam@users.noreply.github.com>
Date: Wed, 27 Oct 2021 14:08:44 +0800
Subject: [PATCH] prevent monitor dead for unexpected error

---
 server/model/monitor.js | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/server/model/monitor.js b/server/model/monitor.js
index 126f091c..2f28e5b9 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -387,18 +387,32 @@ class Monitor extends BeanModel {
                     }
                 }
 
-                this.heartbeatInterval = setTimeout(beat, beatInterval * 1000);
+                this.heartbeatInterval = setTimeout(safeBeat, beatInterval * 1000);
             }
 
         };
 
+        const safeBeat = async () => {
+            try {
+                await beat();
+            } catch (e) {
+                console.trace(e);
+                console.error("Please report to https://github.com/louislam/uptime-kuma/issues");
+
+                if (! this.isStop) {
+                    console.log("Try to restart the monitor");
+                    this.heartbeatInterval = setTimeout(safeBeat, this.interval * 1000);
+                }
+            }
+        };
+
         // Delay Push Type
         if (this.type === "push") {
             setTimeout(() => {
-                beat();
+                safeBeat();
             }, this.interval * 1000);
         } else {
-            beat();
+            safeBeat();
         }
     }