go - 如何在没有第三方库的情况下在 Go 1.8 中设置 http2 服务器？

Question

听说最新的 Go 版本会支持 http2。如何在不使用 golang.org/x/net/http2 的情况下搭建 http2 服务器？

在以前的版本中，您可以这样做:

package main

import (
    "log"
    "net/http"
    "os"

    "golang.org/x/net/http2"
)

func main() {
    cwd, err := os.Getwd()
    if err != nil {
        log.Fatal(err)
    }

    srv := &http.Server{
        Addr:    ":443",
        Handler: http.FileServer(http.Dir(cwd)),
    }
    http2.ConfigureServer(srv, &http2.Server{})
    log.Fatal(srv.ListenAndServeTLS("server.crt", "server.key"))
}

Answer 1

在大多数情况下，您只需使用 net/http:

Starting with Go 1.6, the http package has transparent support for the HTTP/2 protocol when using HTTPS.

The http package's Transport and Server both automatically enable HTTP/2 support for simple configurations. To enable HTTP/2 for more complex configurations, to use lower-level HTTP/2 features, or to use a newer version of Go's http2 package, import "golang.org/x/net/http2" directly and use its ConfigureTransport and/or ConfigureServer functions. Manually configuring HTTP/2 via the golang.org/x/net/http2 package takes precedence over the net/http package's built-in HTTP/2 support.