Create Go module

examples/chat-echo/main.go

@@ -1,10 +1,9 @@
 package main
 
 import (
-	"github.com/labstack/echo"
-	"github.com/labstack/echo/engine/standard"
-	"github.com/labstack/echo/middleware"
-	"gopkg.in/olahol/melody.v1"
+	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
+	"github.com/olahol/melody"
 	"net/http"
 )
 
@@ -16,12 +15,12 @@ func main() {
 	e.Use(middleware.Recover())
 
 	e.GET("/", func(c echo.Context) error {
-		http.ServeFile(c.Response().(*standard.Response).ResponseWriter, c.Request().(*standard.Request).Request, "index.html")
+		http.ServeFile(c.Response().Writer, c.Request(), "index.html")
 		return nil
 	})
 
 	e.GET("/ws", func(c echo.Context) error {
-		m.HandleRequest(c.Response().(*standard.Response).ResponseWriter, c.Request().(*standard.Request).Request)
+		m.HandleRequest(c.Response().Writer, c.Request())
 		return nil
 	})
 
@@ -29,5 +28,5 @@ func main() {
 		m.Broadcast(msg)
 	})
 
-	e.Run(standard.New(":5000"))
+	e.Logger.Fatal(e.Start(":5000"))
 }