From c730605198a574a946292ef18299ac301a23e034 Mon Sep 17 00:00:00 2001
From: VakarisZ <vakarisz@yahoo.com>
Date: Thu, 21 May 2020 15:34:57 +0300
Subject: [PATCH] UI crash due to multiple redundant telemetry requests fix

---
 .../cc/ui/src/components/pages/MapPage.js             | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/monkey/monkey_island/cc/ui/src/components/pages/MapPage.js b/monkey/monkey_island/cc/ui/src/components/pages/MapPage.js
index 997a2ae4c..2962b839a 100644
--- a/monkey/monkey_island/cc/ui/src/components/pages/MapPage.js
+++ b/monkey/monkey_island/cc/ui/src/components/pages/MapPage.js
@@ -23,7 +23,8 @@ class MapPageComponent extends AuthComponent {
       telemetryLastTimestamp: null,
       isScrolledUp: false,
       telemetryLines: 0,
-      telemetryCurrentLine: 0
+      telemetryCurrentLine: 0,
+      telemetryUpdateInProgress: false
     };
     this.telemConsole = React.createRef();
     this.handleScroll = this.handleScroll.bind(this);
@@ -72,16 +73,20 @@ class MapPageComponent extends AuthComponent {
   };
 
   updateTelemetryFromServer = () => {
+    if( this.state.telemetryUpdateInProgress ) {
+      return
+    }
+    this.setState({telemetryUpdateInProgress: true});
     this.authFetch('/api/telemetry-feed?timestamp=' + this.state.telemetryLastTimestamp)
       .then(res => res.json())
       .then(res => {
         if ('telemetries' in res) {
           let newTelem = this.state.telemetry.concat(res['telemetries']);
-
           this.setState(
             {
               telemetry: newTelem,
-              telemetryLastTimestamp: res['timestamp']
+              telemetryLastTimestamp: res['timestamp'],
+              telemetryUpdateInProgress: false
             });
           this.props.onStatusChange();