Golang HTTPS

用golang来实现的webserver通常是是这样的

//main.go
package main

import (
	"fmt"
	"io"
	"net/http"
)

func defaultHandler(w http.ResponseWriter, r *http.Request) {
	io.WriteString(w, "<h1>Golang HTTP</h1>")
}

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/", defaultHandler)
	err := http.ListenAndServe(":80", mux)
	if err != nil {
		fmt.Println(err.Error())
	}
}

服务运行后,我们通常通过http://localhost的形式来访问,

而我们要实现的是通过https://localhost的形式来访问.

那么如何用golang来实现HTTPS呢?

//main.go
package main

import (
	"fmt"
	"io"
	"net/http"
)

func defaultHandler(w http.ResponseWriter, r *http.Request) {
	io.WriteString(w, "<h1>Golang HTTPS</h1>")
}

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/", defaultHandler)
	certFile := "/etc/letsencrypt/live/www.taadis.com/cert.pem"
	keyFile := "/etc/letsencrypt/live/www.taadis.com/privkey.pem"
	err := http.ListenAndServeTLS(":443", certFile, keyFile, mux)
	if err != nil {
		fmt.Println(err.Error())
	}
}

源码比较简单,

主要是把http.ListenAndServe()替换成ListenAndServeTLS(),

其次注意下端口号的区别,

还有就是CA证书的问题,这里我采用了Let's Encrypt