Add error reporting on http server startup failure

dvzaservice/main.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"log"
 	"net"
+	"net/http"
 	"os"
 	"os/signal"
 	"sync"
@@ -96,7 +97,9 @@ func main() {
 
 	go func() {
 		wg.Add(1)
-		srv.ListenAndServe()
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			panic(err)
+		}
 	}()
 
 	<-stop

dvzaservice/srv.go

@@ -34,12 +34,12 @@ func (srv *UIService) Addr() string {
 	return srv.srv.Addr
 }
 
-func (srv *UIService) ListenAndServe() {
+func (srv *UIService) ListenAndServe() error {
 	if !srv.inited {
 		srv.init()
 	}
 	log.Printf("Listening on %v\n", srv.srv.Addr)
-	srv.srv.ListenAndServe()
+	return srv.srv.ListenAndServe()
 }
 
 func (srv *UIService) Shutdown(ctx context.Context) error {

whiteboxservice/main.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"log"
 	"net"
+	"net/http"
 	"os"
 	"os/signal"
 	"sync"
@@ -103,7 +104,9 @@ func main() {
 
 	go func() {
 		wg.Add(1)
-		srv.ListenAndServe()
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			panic(err)
+		}
 	}()
 
 	<-stop

whiteboxservice/srv.go

@@ -39,12 +39,12 @@ func (srv *UIService) Addr() string {
 	return srv.srv.Addr
 }
 
-func (srv *UIService) ListenAndServe() {
+func (srv *UIService) ListenAndServe() error {
 	if !srv.inited {
 		srv.init()
 	}
-	log.Println("Listening on %v", srv.srv.Addr)
-	srv.srv.ListenAndServe()
+	log.Printf("Listening on %v\n", srv.srv.Addr)
+	return srv.srv.ListenAndServe()
 }
 
 func (srv *UIService) Shutdown(ctx context.Context) error {