go-examples/example-httpserver/main.go

package main

import (
	"io"
	"log"
	"net/http"
)

type MyHandler int

func (MyHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
	resp.Header().Set("Content-Type", "text/plain")
	io.WriteString(resp, req.RequestURI)
}

func main() {
	var myHandler = new(MyHandler)
	s := &http.Server{
		Addr:    ":9000",
		Handler: myHandler,
	}
	log.Fatal(s.ListenAndServe())
}