Use event logger for proxy starting message and NAT info

common/event/interface.go

@@ -58,6 +58,14 @@ func (e EventOnSnowflakeConnectionFailed) String() string {
 	return fmt.Sprintf("trying a new proxy: %s", scrubbed)
 }
 
+type EventOnProxyStarting struct {
+	SnowflakeEvent
+}
+
+func (e EventOnProxyStarting) String() string {
+	return "Proxy starting"
+}
+
 type EventOnProxyConnectionOver struct {
 	SnowflakeEvent
 	InboundTraffic  int
@@ -68,6 +76,15 @@ func (e EventOnProxyConnectionOver) String() string {
 	return fmt.Sprintf("Proxy connection closed (↑ %d, ↓ %d)", e.InboundTraffic, e.OutboundTraffic)
 }
 
+type EventOnCurrentNATTypeDetermined struct {
+	SnowflakeEvent
+	CurNATType string
+}
+
+func (e EventOnCurrentNATTypeDetermined) String() string {
+	return fmt.Sprintf("NAT type: %v", e.CurNATType)
+}
+
 type SnowflakeEventReceiver interface {
 	// OnNewSnowflakeEvent notify receiver about a new event
 	// This method MUST not block

proxy/lib/pt_event_logger.go

@@ -33,6 +33,8 @@ func (p *logEventLogger) OnNewSnowflakeEvent(e event.SnowflakeEvent) {
 		p.inboundSum += e.InboundTraffic
 		p.outboundSum += e.OutboundTraffic
 		p.connectionCount += 1
+	default:
+		p.logger.Println(e.String())
 	}
 }
 

proxy/lib/snowflake.go

@@ -566,7 +566,7 @@ func (sf *SnowflakeProxy) runSession(sid string) {
 func (sf *SnowflakeProxy) Start() error {
 	var err error
 
-	log.Println("starting")
+	sf.EventDispatcher.OnNewSnowflakeEvent(event.EventOnProxyStarting{})
 	sf.shutdown = make(chan struct{})
 
 	// blank configurations revert to default
@@ -621,7 +621,7 @@ func (sf *SnowflakeProxy) Start() error {
 
 	currentNATTypeLoaded := getCurrentNATType()
 
-	log.Printf("NAT type: %s", currentNATTypeLoaded)
+	sf.EventDispatcher.OnNewSnowflakeEvent(&event.EventOnCurrentNATTypeDetermined{CurNATType: currentNATTypeLoaded})
 
 	NatRetestTask := task.Periodic{
 		Interval: sf.NATTypeMeasurementInterval,