From 401e6739cdeb1b11ef6aee884f55ba3ec90b0671 Mon Sep 17 00:00:00 2001
From: Axel Hinrichs <hinrichs@bitscape.de>
Date: Tue, 5 Jul 2022 23:42:07 +0200
Subject: [PATCH] [WebApi] rate limit ws cleanup (1/s)

---
 include/WebApi.h | 1 +
 src/WebApi.cpp   | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/WebApi.h b/include/WebApi.h
index 98ed044..2d82839 100644
--- a/include/WebApi.h
+++ b/include/WebApi.h
@@ -31,6 +31,7 @@ private:
     WebApiSysstatusClass _webApiSysstatus;
     WebApiWebappClass _webApiWebapp;
     WebApiWsLiveClass _webApiWsLive;
+    unsigned long lastTimerCall = 0;
 
     void onWebsocketEvent(AsyncWebSocket* server, AsyncWebSocketClient* client, AwsEventType type, void* arg, uint8_t* data, size_t len);
 };
diff --git a/src/WebApi.cpp b/src/WebApi.cpp
index 52ac0df..0194ff7 100644
--- a/src/WebApi.cpp
+++ b/src/WebApi.cpp
@@ -47,7 +47,10 @@ void WebApiClass::loop()
     _webApiWsLive.loop();
 
     // see: https://github.com/me-no-dev/ESPAsyncWebServer#limiting-the-number-of-web-socket-clients
-    _ws.cleanupClients();
+    if (millis() - lastTimerCall > 1000) {
+        _ws.cleanupClients();
+        lastTimerCall = millis();
+    }
 }
 
 void WebApiClass::onWebsocketEvent(AsyncWebSocket* server, AsyncWebSocketClient* client, AwsEventType type, void* arg, uint8_t* data, size_t len)