Overwrites the host forwarded by NewReverseProxy

simple-proxy.go

package main

import (
	"net/http"
	"net/http/httputil"
	"net/url"
)

func main() {
	remote, err := url.Parse("https://www.google.com")
	if err != nil {
		panic(err)
	}

	proxyHandler := NewProxyHandler(remote)
	http.Handle("/", proxyHandler)
	err = http.ListenAndServe(":3022", nil)
	if err != nil {
		panic(err)
	}
}

func NewProxyHandler(target *url.URL) *httputil.ReverseProxy {
	director := func(req *http.Request) {
		req.Host = target.Host
		req.URL.Host = target.Host
		req.URL.Scheme = target.Scheme
	}
	return &httputil.ReverseProxy{Director: director}
}

type ProxyHandler struct {
	p *httputil.ReverseProxy
}