接收参数后如何安全关闭golang服务-最佳做法

塔林杜：

我一直在使用golang实现服务器。收到预期的参数“代码”后，我需要关闭服务器。在关闭服务器之前，我需要重定向到另一个网页。我已经实现如下。该代码有效。我需要知道这是否是最好的方法吗？感谢您的建议。

func main() {
    var code string
    const port  int = 8888
    httpPortString := ":" + strconv.Itoa(port)
    mux := http.NewServeMux()
    fmt.Printf("Http Server initialized on Port %s", httpPortString)
    server := http.Server{Addr: httpPortString, Handler: mux}
    var timer *time.Timer
    mux.HandleFunc("/auth", func(w http.ResponseWriter, r *http.Request) {
        err := r.ParseForm()
        if err != nil {
            fmt.Printf("Error parsing the code: %s", err)
        }
        code = r.Form.Get("code")
        if err != nil {
            log.Printf("Error occurred while establishing the server: %s", err)
        }
        http.Redirect(w, r, "https://cloud.google.com/sdk/auth_success", http.StatusMovedPermanently)

        timer = time.NewTimer(2 * time.Second)
        go func() {
            <-timer.C
            server.Shutdown(context.Background())
        }()
    })
    if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
        fmt.Printf("Error while establishing the service: %s", err)
    }
    fmt.Println("Finished executing the the service")

}

谢谢 ..！

colm.anseo：

从此处引用的示例中获取@Peter冲洗的建议和想法：

f, ok := w.(http.Flusher)
if !ok {
    http.Error(w, "no flush support", http.StatusInternalServerError)
    return
}   

http.Redirect(w, r, "https://cloud.google.com/sdk/auth_success", http.StatusSeeOther)

f.Flush() // <-- ensures client gets all writes
          // this is done implicitly on http handler returns, but...
          // we're shutting down the server now!

go func() {
    server.Shutdown(context.Background())
    close(idleConnsClosed)
}()