diff --git a/server/engine/engine.go b/server/engine/engine.go
new file mode 100644
index 0000000..d01ff82
--- /dev/null
+++ b/server/engine/engine.go
@@ -0,0 +1,33 @@
+package engine
+
+import (
+	"fmt"
+	"github.com/imkira/go-observer"
+	"sirlab.de/go/knyc/handler"
+	"time"
+)
+
+type Engine struct {
+	obs observer.Property
+}
+
+func NewEngine() *Engine {
+	engine := Engine{
+		obs: observer.NewProperty(handler.Value{}),
+	}
+	return &engine
+}
+
+func (engine *Engine) Run() {
+	for {
+		value := engine.obs.Value().(handler.Value)
+		fmt.Printf("sleep: %d\n", value.Value)
+		time.Sleep(1 * time.Second)
+		value.Value++
+		engine.obs.Update(value)
+	}
+}
+
+func (engine *Engine) GetHttpHandler() handler.HandlerFunc {
+	return handler.SyncFactory(engine.obs)
+}
diff --git a/server/handler/authmux.go b/server/handler/authmux.go
index 028b969..02a27e2 100644
--- a/server/handler/authmux.go
+++ b/server/handler/authmux.go
@@ -4,13 +4,15 @@ import (
 	"net/http"
 )
 
+type HandlerFunc func(http.ResponseWriter, *http.Request)
+
 type AuthMux struct {
-	mux         *http.ServeMux
+	mux *http.ServeMux
 }
 
 func NewAuthMux() *AuthMux {
 	return &(AuthMux{
-		mux:         http.NewServeMux(),
+		mux: http.NewServeMux(),
 	})
 }
 
@@ -18,7 +20,7 @@ func (authMux *AuthMux) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	authMux.mux.ServeHTTP(w, r)
 }
 
-func (authMux *AuthMux) PublicHandleFunc(pattern string, handlerFunc func(http.ResponseWriter, *http.Request)) {
+func (authMux *AuthMux) PublicHandleFunc(pattern string, handlerFunc HandlerFunc) {
 	authMux.mux.HandleFunc(pattern, handlerFunc)
 }
 
diff --git a/server/handler/internal.go b/server/handler/internal.go
index 1f785f9..6a59abe 100644
--- a/server/handler/internal.go
+++ b/server/handler/internal.go
@@ -7,13 +7,11 @@ import (
 	"time"
 )
 
-type HttpHandler func(http.ResponseWriter, *http.Request)
-
 func Exit(_ http.ResponseWriter, _ *http.Request) {
 	os.Exit(0)
 }
 
-func CreateVersionHandler() HttpHandler {
+func CreateVersionHandler() HandlerFunc {
 	startTime := time.Now().Unix()
 	return func(w http.ResponseWriter, r *http.Request) {
 		fmt.Fprintf(w, "%d\n", startTime)
diff --git a/server/handler/sync.go b/server/handler/sync.go
index 5ee89ae..3b6af8d 100644
--- a/server/handler/sync.go
+++ b/server/handler/sync.go
@@ -11,7 +11,7 @@ type Value struct {
 	Value int
 }
 
-func SyncFactory(obs observer.Property) HttpHandler {
+func SyncFactory(obs observer.Property) HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		refId, err := strconv.Atoi(r.URL.Query().Get("ref"))
 		if err != nil {
diff --git a/server/knyc.go b/server/knyc.go
index 66d0def..31e5dbc 100644
--- a/server/knyc.go
+++ b/server/knyc.go
@@ -2,45 +2,24 @@ package main
 
 import (
 	"fmt"
-	"github.com/imkira/go-observer"
 	"net/http"
+	"sirlab.de/go/knyc/engine"
 	"sirlab.de/go/knyc/handler"
-	"time"
 )
 
-type Engine struct {
-	obs observer.Property
-}
-
-var engine Engine
-
-func (engine Engine) runEngine() {
-	for {
-		value := engine.obs.Value().(handler.Value)
-		fmt.Printf("sleep: %d\n", value.Value)
-		time.Sleep(1 * time.Second)
-		value.Value++
-		engine.obs.Update(value)
-	}
-}
-
 func main() {
 	app := handler.NewAuthMux()
 	http.Handle("/", app)
 
 	app.PublicHandleFunc("/__intern__/exit", handler.Exit)
 
-	obs := observer.NewProperty(handler.Value{Value: 19})
-	app.PublicHandleFunc("/sync", handler.SyncFactory(obs))
-
-	// hanlde login page
-	fsHandler := http.FileServer(http.Dir("../client/dist/"))
-
 	// default handler
+	fsHandler := http.FileServer(http.Dir("../client/dist/"))
 	app.PublicHandle("/", fsHandler)
 
-	engine.obs = obs
-	go engine.runEngine()
+	eng := engine.NewEngine()
+	app.PublicHandleFunc("/sync", eng.GetHttpHandler())
+	go eng.Run()
 
 	// start listening
 	fmt.Println("http://localhost:32039")