Reverse proxy golang with oxy/forward package

reverseproxy-v2.go

package main

import (
	"crypto/tls"
	"github.com/vulcand/oxy/v2/forward"
	"log"
	"net/http"
	"net/url"
)

func main() {
	target := "https://reddit.com"
	fwd := forward.New(true)
	fwd.Transport = &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
	}

	// Parse the target URL
	targetURL, err := url.Parse(target)
	if err != nil {
		log.Fatalf("Failed to parse target URL: %v", err)
	}

	redirect := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		// Create a new URL based on the original request URL
		proxyURL := *targetURL
		proxyURL.Path = req.URL.Path
		proxyURL.RawQuery = req.URL.RawQuery

		// Update the request URL to point to the target backend
		req.URL = &proxyURL

		// Ensure the Host header is set correctly for the target backend
		req.Host = targetURL.Host

		// Forward all headers from the incoming request to the target
		for key, values := range req.Header {
			for _, value := range values {
				req.Header.Set(key, value)
			}
		}

		// Forward the request to the backend
		fwd.ServeHTTP(w, req)
	})

	s := &http.Server{
		Addr:    ":8080",
		Handler: redirect,
	}
	s.ListenAndServe()
}