add https server

README.md

@@ -25,7 +25,9 @@ Run the server
 
 ```bash
 # Run the Code
-go run serve.go --port 8443 --letsencrypt-dir=./etc/letsencrypt/live/
+go run serve.go \
+  --port 8443 \
+  --letsencrypt-path=./etc/letsencrypt/live/
 ```
 
 View it in your browser

serve.go

@@ -1,9 +1,14 @@
 package main
 
 import (
+	"crypto/tls"
 	"flag"
 	"fmt"
+	"net"
+	"net/http"
 	"os"
+	"path/filepath"
+	"strconv"
 	"strings"
 )
 
@@ -15,6 +20,23 @@ func usage() {
 	os.Exit(2)
 }
 
+type myHandler struct{}
+
+func (m *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	// Print debug info
+	fmt.Println(r.Host)
+	fmt.Println(r.Method)
+	fmt.Println(r.RequestURI)
+	fmt.Println(r.URL) // has many keys, such as Query
+	for k, v := range r.Header {
+		fmt.Println(k, v)
+	}
+	fmt.Println(r.Body)
+
+	// End the request
+	fmt.Fprintf(w, "Hi there, %s %q? Wow!\n\nWith Love,\n\t%s", r.Method, r.URL.Path[1:], r.Host)
+}
+
 func main() {
 	flag.Usage = usage
 
@@ -34,5 +56,33 @@ func main() {
 	*/
 
 	fmt.Printf("Loading Certificates %s/%s/{privkey.pem,fullchain.pem}\n", *certsPath, *defaultHost)
-	fmt.Printf("Listening on https://%s:%d\n", host, *port)
+	privkeyPath := filepath.Join(*certsPath, *defaultHost, "privkey.pem")
+	certPath := filepath.Join(*certsPath, *defaultHost, "fullchain.pem")
+	cert, err := tls.LoadX509KeyPair(certPath, privkeyPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Couldn't load default certificates: %s\n", err)
+		os.Exit(1)
+	}
+
+	addr := ":" + strconv.Itoa(int(*port))
+
+	conn, err := net.Listen("tcp", addr)
+	if nil != err {
+		fmt.Fprintf(os.Stderr, "Couldn't bind to TCP socket %q: %s\n", addr, err)
+		os.Exit(1)
+	}
+
+	tlsConfig := new(tls.Config)
+	tlsConfig.Certificates = []tls.Certificate{cert}
+	tlsConfig.GetCertificate = func(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error) {
+		return &cert, nil
+	}
+	tlsListener := tls.NewListener(conn, tlsConfig)
+
+	server := &http.Server{
+		Addr:    addr,
+		Handler: &myHandler{},
+	}
+	fmt.Printf("Listening on https://%s:%d\n", host, *port)
+	server.Serve(tlsListener)
 }