self signed https localhost proxy with golang

create cert.txt

install go and openssl

mac os x: brew install go openssl

Generate private key and certificate signing request

openssl genrsa -des3 -passout pass:x -out server.pass.key 2048
openssl rsa -passin pass:x -in server.pass.key -out server.key
rm server.pass.key
openssl req -new -key server.key -out server.csr
openssl x509 -req -sha256 -days 365 -in server.csr -signkey server.key -out server.crt

start the proxy
go run httpsproxy.go

httpsproxy.go

package main

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

func main() {
	localProxyUrl, _ := url.Parse("http://127.0.0.1:8100/")
	localProxy := httputil.NewSingleHostReverseProxy(localProxyUrl)
	http.Handle("/", localProxy)

	log.Println("Serving on localhost:8080")
	log.Fatal(http.ListenAndServeTLS(":8080", "server.crt", "server.key", nil))
}