reset mqtt fail count when settings change

src/mqtt.cpp

@@ -280,6 +280,9 @@ void Mqtt::on_connect() {
     publish("info", doc, false); // send with retain off
 
     publish("status", "online", true); // say we're alive to the Last Will topic, with retain on
+
+    reset_publish_fails(); // reset fail count to 0
+
     LOG_INFO(F("MQTT connected"));
 }
 

src/mqtt.h

@@ -69,7 +69,7 @@ class Mqtt {
 
     enum Operation { PUBLISH, SUBSCRIBE };
 
-    static constexpr uint8_t MQTT_TOPIC_MAX_SIZE = 60; // include host and base etc
+    static constexpr uint8_t MQTT_TOPIC_MAX_SIZE = 60;
 
     // are static to be accessed from EMS devices
     static void subscribe(const uint8_t device_id, const std::string & topic, mqtt_function_p cb);
@@ -108,6 +108,10 @@ class Mqtt {
         return mqtt_publish_fails_;
     }
 
+    static void reset_publish_fails() {
+        mqtt_publish_fails_ = 0;
+    }
+
   private:
     static uuid::log::Logger logger_;
 
@@ -156,6 +160,7 @@ class Mqtt {
         std::string     topic_;
         mqtt_function_p mqtt_function_;
     };
+
     static std::vector<MQTTFunction> mqtt_functions_; // list of mqtt callbacks for all devices
 
     uint32_t last_mqtt_poll_ = 0;
@@ -165,7 +170,7 @@ class Mqtt {
     static std::string hostname_;
     static uint8_t     mqtt_qos_;
     static uint16_t    publish_time_;
-}; // namespace emsesp
+};
 
 } // namespace emsesp