A sample Go app demonstrating the 150.214.47.153:35443 is not accessible on PWS

timeout.go

package main

import (
	"fmt"
	"log"
	"net"
	"net/http"
	"os"
)

func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
		conn, err := net.Dial("tcp", "150.214.47.153:35443")
		if err != nil {
			http.Error(w, err.Error(), 500)
			return
		}
		defer conn.Close()
		fmt.Fprintf(w, "OK")
	})
	var port string
	if port = os.Getenv("PORT"); port == "" {
		port = "8080"
	}
	log.Printf("Listening at port %v\n", port)
	if err := http.ListenAndServe(":"+port, nil); err != nil {
		log.Fatal(err)
	}
}