diff --git a/main.go b/main.go
index a995450..b9e7563 100644
--- a/main.go
+++ b/main.go
@@ -4,13 +4,11 @@ package main
 
 import (
 	"bufio"
-	"encoding/json"
 	"path/filepath"
 	// "flag"
-	"fmt"
+
 	"io"
 	"io/ioutil"
-	"log"
 	"net/http"
 	"net/url"
 	"os"
@@ -22,8 +20,8 @@ import (
 	"github.com/gorilla/mux"
 	accesslog "github.com/mash/go-accesslog"
 	flag "github.com/ogier/pflag"
-	"github.com/openatx/wdaproxy/connector"
 	"github.com/openatx/wdaproxy/web"
+	"github.com/qiniu/log"
 )
 
 var (
@@ -77,41 +75,6 @@ type Device struct {
 	Manufacturer string `json:"manufacturer"`
 }
 
-func mockIOSProvider() {
-	c := connector.New(yosemiteServer, yosemiteGroup, lisPort)
-	go c.KeepOnline()
-
-	device, err := GetDeviceInfo(getUdid())
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	c.WriteJSON(map[string]interface{}{
-		"type": "addDevice",
-		"data": device,
-	})
-
-	rt.HandleFunc("/api/devices/{udid}/remoteConnectUrl", func(w http.ResponseWriter, r *http.Request) {
-		if r.Method == "POST" {
-			json.NewEncoder(w).Encode(map[string]interface{}{
-				"success":          true,
-				"description":      "notice this is mock data",
-				"remoteConnectUrl": fmt.Sprintf("http://%s:%d/", c.RemoteIp, lisPort),
-			})
-		}
-		if r.Method == "DELETE" {
-			json.NewEncoder(w).Encode(map[string]interface{}{
-				"success":     true,
-				"description": "Device remote disconnected successfully",
-			})
-		}
-	})
-
-	rt.HandleFunc("/devices/{udid}", func(w http.ResponseWriter, r *http.Request) {
-		io.WriteString(w, "Not finished yet")
-	})
-}
-
 func main() {
 	showVer := flag.BoolP("version", "v", false, "Print version")
 	flag.IntVarP(&lisPort, "port", "p", 8100, "Proxy listen port")
@@ -129,13 +92,15 @@ func main() {
 		udid = getUdid()
 	}
 
-	mockIOSProvider()
-
 	if *showVer {
 		println(version)
 		return
 	}
 
+	if yosemiteServer != "" {
+		mockIOSProvider()
+	}
+
 	errC := make(chan error)
 	freePort, err := freeport.Get()
 	if err != nil {
diff --git a/provider.go b/provider.go
new file mode 100644
index 0000000..da28ade
--- /dev/null
+++ b/provider.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/openatx/wdaproxy/connector"
+	"github.com/qiniu/log"
+)
+
+func mockIOSProvider() {
+	c := connector.New(yosemiteServer, yosemiteGroup, lisPort)
+	go c.KeepOnline()
+
+	device, err := GetDeviceInfo(udid)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	c.WriteJSON(map[string]interface{}{
+		"type": "addDevice",
+		"data": device,
+	})
+	rt.HandleFunc("/api/devices/{udid}/remoteConnect", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json; charset=utf-8")
+		if r.Method == "POST" {
+			json.NewEncoder(w).Encode(map[string]interface{}{
+				"success":          true,
+				"description":      "notice this is mock data",
+				"remoteConnectUrl": fmt.Sprintf("http://%s:%d/", c.RemoteIp, lisPort),
+			})
+		}
+		if r.Method == "DELETE" {
+			json.NewEncoder(w).Encode(map[string]interface{}{
+				"success":     true,
+				"description": "Device remote disconnected successfully",
+			})
+		}
+	}).Methods("POST", "DELETE")
+
+	rt.HandleFunc("/devices/{udid}", func(w http.ResponseWriter, r *http.Request) {
+		io.WriteString(w, "Not finished yet")
+	})
+}