better fix for presence detection

networkDevices/NetworkDevice.h

@@ -20,5 +20,6 @@ public:
     virtual bool isConnected() = 0;
 
 protected:
+    const uint16_t _mqttMaxBufferSize = 16384;
     const String _hostname;
 };

networkDevices/W5500Device.cpp

@@ -38,6 +38,7 @@ void W5500Device::initialize()
     Ethernet.init(ETHERNET_CS_PIN);
     _ethClient = new EthernetClient();
     _mqttClient = new PubSubClient(*_ethClient);
+    _mqttClient->setBufferSize(_mqttMaxBufferSize);
 
     reconnect();
 

networkDevices/WifiDevice.cpp

@@ -47,6 +47,8 @@ void WifiDevice::initialize()
         Serial.print(F("WiFi connected: "));
         Serial.println(WiFi.localIP().toString());
     }
+
+    _mqttClient.setBufferSize(_mqttMaxBufferSize);
 }
 
 void WifiDevice::reconfigure()