fix race condition

internal/core/api.go

@@ -297,7 +297,6 @@ func newAPI(
 		parent:      parent,
 	}
 
-	gin.SetMode(gin.ReleaseMode)
 	router := gin.New()
 	router.NoRoute(a.mwLog)
 	group := router.Group("/", a.mwLog)

internal/core/core.go

@@ -7,6 +7,7 @@ import (
 	"reflect"
 	"sync/atomic"
 
+	"github.com/gin-gonic/gin"
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/aler9/rtsp-simple-server/internal/conf"
@@ -64,6 +65,8 @@ func New(args []string) (*Core, bool) {
 	// do not check for errors
 	rlimit.Raise()
 
+	gin.SetMode(gin.ReleaseMode)
+
 	ctx, ctxCancel := context.WithCancel(context.Background())
 
 	p := &Core{

internal/core/hls_server.go

@@ -100,7 +100,6 @@ func (s *hlsServer) close() {
 func (s *hlsServer) run() {
 	defer s.wg.Done()
 
-	gin.SetMode(gin.ReleaseMode)
 	router := gin.New()
 	router.NoRoute(s.onRequest)