You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/iris/_examples/websocket/socketio
    
    the code of the file until where you have to start completion: // Package main runs a go-socket.
    
func main() {
	app := iris.New()
	server := socketio.NewServer(nil)
	server.OnConnect("/", func(s socketio.Conn) error {
		s.SetContext("")
		fmt.Println("connected:", s.ID())
		return nil
	})
	server.OnEvent("/", "notice", func(s socketio.Conn, msg string) {
		fmt.Println("notice:", msg)
		s.Emit("reply", "have "+msg)
	})
	server.OnEvent("/chat", "msg", func(s socketio.Conn, msg string) string {
		s.SetContext(msg)
		return "recv " + msg
	})
	server.OnEvent("/", "bye", func(s socketio.Conn) string {
		last := s.Context().(string)
		s.Emit("bye", last)
		s.Close()
		return last
	})
	server.OnError("/", func(s socketio.Conn, e error) {
		fmt.Println("meet error:", e)
	})
	server.OnDisconnect("/", func(s socketio.Conn, reason string) {
		fmt.Println("closed", reason)
	})
	go server.Serve()
	defer server.Close()

	app.HandleMany("GET POST", "/socket.io/{any:path}", iris.FromStd(server))
	app.HandleDir("/", iris.Dir("./asset"))

	app.Listen(":8000", iris.WithoutPathCorrection)
}