9.12 https

Prepare the private key and self-signed X-509 certificate. For this purpose, the OpenSSL utility could be used. By executing the command openssl genrsa -out server.key 2048, the private key derived with the use of an RSA algorithm is generated to the file server.key. Based on this private key, the X-509 certificate could be generated by calling openssl req -new -x509 -sha256 -key server.key -out server.crt -days 365. The server.crt file is created.

package main

import (
	"fmt"
	"net/http"
)

type SimpleHTTP struct{}

func (s SimpleHTTP) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
	fmt.Fprintln(rw, "Hello world")
}

func main() {
	fmt.Println("Starting HTTP server on port 8080")
	// Eventually you can use
	// http.ListenAndServe(":8080", SimpleHTTP{})
	s := &http.Server{Addr: ":8080", Handler: SimpleHTTP{}}
	if err := s.ListenAndServeTLS("server.crt", "server.key"); err != nil {
		panic(err)
	}
}