- fix re-connection after connection loss to broker

- add subscribe call after reconnect
  - additional config settings for timeout values
- add more info/warn outputs
- change default log level from "warn" to "info"

internal/MqttService/MqttServiceConfig.go

@@ -1,21 +1,23 @@
 package MqttService
 
 type MqttServiceConfig struct {
-	BrokerAddress string `yaml:"broker-address"`
-	TopicPrefix string `yaml:"topic-prefix"`
-	AutoReconnect bool `yaml:"auto-reconnect"`
-	ConnectTimeoutMs int `yaml:"connect-timeout-ms"`
-	Username string `yaml:"username"`
-	Password string `yaml:"password"`
-
+	BrokerAddress          string `yaml:"broker-address"`
+	TopicPrefix            string `yaml:"topic-prefix"`
+	AutoReconnect          bool   `yaml:"auto-reconnect"`
+	ConnectTimeoutMs       int    `yaml:"connect-timeout-ms"`
+	ConnectRetryIntervalMs int    `yaml:"connect-retry-interval-ms"`
+	MaxReconnectIntervalMs int    `yaml:"max-reconnect-interval-ms"`
+	Username               string `yaml:"username"`
+	Password               string `yaml:"password"`
 }
 
 func NewMqttServiceConfig() MqttServiceConfig {
 	return MqttServiceConfig{
-		BrokerAddress: "tcp://localhost:1883",
-		TopicPrefix: "/rpicontrol",
-		AutoReconnect: true,
-		ConnectTimeoutMs: 10000,
-
+		BrokerAddress:          "tcp://localhost:1883",
+		TopicPrefix:            "/rpicontrol",
+		AutoReconnect:          true,
+		ConnectTimeoutMs:       10000,
+		ConnectRetryIntervalMs: 10000,
+		MaxReconnectIntervalMs: 10000,
 	}
 }