如何在 Go 中从 http 重写/重定向到 https？

Question

我已经建立了 TLS 并且它有效。我知道如何在 nginx 中从 http 重写为 https，但我不再使用 nginx。我不知道如何在 Go 中正确执行此操作。

func main() {

    certificate := "/srv/ssl/ssl-bundle.crt"

    privateKey := "/srv/ssl/mykey.key"

    http.HandleFunc("/", rootHander)

    // log.Fatal(http.ListenAndServe(":80", nil))

    log.Fatal(http.ListenAndServeTLS(":443", certificate, privateKey, nil))

}

func rootHander(w http.ResponseWriter, r *http.Request) {

    w.Write([]byte("To the moon!"))

}

我将如何以一种好的方式做到这一点？

Answer 1

创建一个处理重定向到 https 的处理程序，例如：func redirectTLS(w http.ResponseWriter, r *http.Request) {    http.Redirect(w, r, "https://IPAddr:443"+r.RequestURI, http.StatusMovedPermanently)}然后重定向http流量：go func() {    if err := http.ListenAndServe(":80", http.HandlerFunc(redirectTLS)); err != nil {        log.Fatalf("ListenAndServe error: %v", err)    }}()

Answer 2

上面发布的解决方案有点不灵活，尤其是在外部主机名与本地主机不同的情况下。这是我用于 HTTP->HTTPS 重定向的代码：package mainimport (    "net"    "log"    "net/http")var httpAddr ":8080"var httpsAddr ":8443"func main() {    srv := http.Server{        Addr: httpsAddr,    }    _, tlsPort, err := net.SplitHostPort(httpsAddr)    if err != nil {        return err    }    go redirectToHTTPS(tlsPort)    srv.ListenAndServeTLS("cert.pem", "key.pem")}func redirectToHTTPS(tlsPort string) {    httpSrv := http.Server{        Addr: httpAddr,        Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request){            host, _, _ := net.SplitHostPort(r.Host)            u := r.URL            u.Host = net.JoinHostPort(host, tlsPort)            u.Scheme="https"            log.Println(u.String())            http.Redirect(w,r,u.String(), http.StatusMovedPermanently)        }),    }    log.Println(httpSrv.ListenAndServe())}如果您使用标准端口 (80,443)，则不需要拆分地址连接，只需在 URL 上设置方案就足够了。

Answer 3

package mainimport (    "fmt"    "net/http")func redirectToHttps(w http.ResponseWriter, r *http.Request) {    // Redirect the incoming HTTP request. Note that "127.0.0.1:443" will only work if you are accessing the server from your local machine.    http.Redirect(w, r, "https://127.0.0.1:443"+r.RequestURI, http.StatusMovedPermanently)}func handler(w http.ResponseWriter, r *http.Request) {    fmt.Fprintf(w, "Hi there!")    fmt.Println(r.RequestURI)}func main() {    http.HandleFunc("/", handler)    // Start the HTTPS server in a goroutine    go http.ListenAndServeTLS(":443", "cert.pem", "key.pem", nil)    // Start the HTTP server and redirect all incoming connections to HTTPS    http.ListenAndServe(":8080", http.HandlerFunc(redirectToHttps))}