diff --git a/internal/bootstrap/data/dev.go b/internal/bootstrap/data/dev.go
index efdfc6af..cdb9afd5 100644
--- a/internal/bootstrap/data/dev.go
+++ b/internal/bootstrap/data/dev.go
@@ -37,9 +37,9 @@ func initDevData() {
 func initDevDo() {
 	if flags.Dev {
 		go func() {
-			err := message.GetMessenger().WaitSend(map[string]string{
-				"type": "dev",
-				"msg":  "dev mode",
+			err := message.GetMessenger().WaitSend(message.Message{
+				Type:    "string",
+				Content: "dev mode",
 			}, 10)
 			if err != nil {
 				log.Debugf("%+v", err)
diff --git a/internal/message/post.go b/internal/message/http.go
similarity index 64%
rename from internal/message/post.go
rename to internal/message/http.go
index 55030f41..3f023dec 100644
--- a/internal/message/post.go
+++ b/internal/message/http.go
@@ -8,16 +8,16 @@ import (
 	"github.com/pkg/errors"
 )
 
-type Post struct {
-	Received chan string      // received messages from web
-	ToSend   chan interface{} // messages to send to web
+type Http struct {
+	Received chan string  // received messages from web
+	ToSend   chan Message // messages to send to web
 }
 
 type Req struct {
 	Message string `json:"message" form:"message"`
 }
 
-func (p *Post) GetHandle(c *gin.Context) {
+func (p *Http) GetHandle(c *gin.Context) {
 	select {
 	case message := <-p.ToSend:
 		common.SuccessResp(c, message)
@@ -26,7 +26,7 @@ func (p *Post) GetHandle(c *gin.Context) {
 	}
 }
 
-func (p *Post) SendHandle(c *gin.Context) {
+func (p *Http) SendHandle(c *gin.Context) {
 	var req Req
 	if err := c.ShouldBind(&req); err != nil {
 		common.ErrorResp(c, err, 400)
@@ -36,20 +36,20 @@ func (p *Post) SendHandle(c *gin.Context) {
 	case p.Received <- req.Message:
 		common.SuccessResp(c)
 	default:
-		common.ErrorStrResp(c, "send failed", 500)
+		common.ErrorStrResp(c, "nowhere needed", 500)
 	}
 }
 
-func (p *Post) Send(data interface{}) error {
+func (p *Http) Send(message Message) error {
 	select {
-	case p.ToSend <- data:
+	case p.ToSend <- message:
 		return nil
 	default:
 		return errors.New("send failed")
 	}
 }
 
-func (p *Post) Receive() (string, error) {
+func (p *Http) Receive() (string, error) {
 	select {
 	case message := <-p.Received:
 		return message, nil
@@ -58,16 +58,16 @@ func (p *Post) Receive() (string, error) {
 	}
 }
 
-func (p *Post) WaitSend(data interface{}, d int) error {
+func (p *Http) WaitSend(message Message, d int) error {
 	select {
-	case p.ToSend <- data:
+	case p.ToSend <- message:
 		return nil
 	case <-time.After(time.Duration(d) * time.Second):
 		return errors.New("send timeout")
 	}
 }
 
-func (p *Post) WaitReceive(d int) (string, error) {
+func (p *Http) WaitReceive(d int) (string, error) {
 	select {
 	case message := <-p.Received:
 		return message, nil
@@ -76,7 +76,7 @@ func (p *Post) WaitReceive(d int) (string, error) {
 	}
 }
 
-var PostInstance = &Post{
+var HttpInstance = &Http{
 	Received: make(chan string),
-	ToSend:   make(chan interface{}),
+	ToSend:   make(chan Message),
 }
diff --git a/internal/message/message.go b/internal/message/message.go
index baf753ff..0ca0f2ae 100644
--- a/internal/message/message.go
+++ b/internal/message/message.go
@@ -1,12 +1,17 @@
 package message
 
+type Message struct {
+	Type    string      `json:"type"`
+	Content interface{} `json:"content"`
+}
+
 type Messenger interface {
-	Send(interface{}) error
+	Send(Message) error
 	Receive() (string, error)
-	WaitSend(interface{}, int) error
+	WaitSend(Message, int) error
 	WaitReceive(int) (string, error)
 }
 
 func GetMessenger() Messenger {
-	return PostInstance
+	return HttpInstance
 }
diff --git a/server/router.go b/server/router.go
index 01c3ecbf..2cc7b3ee 100644
--- a/server/router.go
+++ b/server/router.go
@@ -101,8 +101,8 @@ func admin(g *gin.RouterGroup) {
 	task.POST("/copy/clear_done", handles.ClearDoneCopyTasks)
 
 	ms := g.Group("/message")
-	ms.GET("/get", message.PostInstance.GetHandle)
-	ms.POST("/send", message.PostInstance.SendHandle)
+	ms.POST("/get", message.HttpInstance.GetHandle)
+	ms.POST("/send", message.HttpInstance.SendHandle)
 }
 
 func fs(g *gin.RouterGroup) {