Golang1.7 Http和Tcp使用同一個連接埠做服務

這是一個建立於 的文章，其中的資訊可能已經有所發展或是發生改變。

先看一下標準庫中http server的實現type tcpKeepAliveListener struct {    *net.TCPListener}func (ln tcpKeepAliveListener) Accept() (c net.Conn, err error) {    tc, err := ln.AcceptTCP()    if err != nil {        return    }    tc.SetKeepAlive(true)    tc.SetKeepAlivePeriod(3 * time.Minute)    return tc, nil}這裡可以看出:tc.SetKeepAlivePeriod(3 * time.Minute) 設定了逾時時間為3分鐘,這個先到這裡下面會用到

func main() {    http.HandleFunc("/", route)    http.ListenAndServe(":1789", nil)}func route(w http.ResponseWriter, r *http.Request) {    log.Printf("Addr->%s\tURI->%s\n", r.RemoteAddr, r.URL.Path)    defer r.Body.Close()    switch r.URL.Path {    case "/":        w.Write([]byte("welcome to work-stacks"))    case "/gettcp":        gettcp(w, r)    default:        http.NotFound(w, r)    }}func gettcp(w http.ResponseWriter, r *http.Request) {    //這裡返回的*bufio.ReadWriter 沒有處理, 生產環境注意要情況bufferd    conn, _, err := w.(http.Hijacker).Hijack()    if err != nil {        log.Printf("擷取Hijacks失敗:%s\n", err.Error())        return    }    if tcp,ok := conn.(*net.TCPConn);ok {        tcp.SetKeepAlivePeriod(60 * time.Minute)    }    //然後就可以做自己要做的操作了.    conn.Close()}

func main() {    req, err := http.NewRequest("GET", "http://127.0.0.1:1789/gettcp", nil)    if err != nil {        log.Println("建立請求失敗:%s\n", err.Error())        return    }    conn, _ := net.Dial("tcp", "127.0.0.1:1789")    defer conn.Close()    hclient := httputil.NewClientConn(conn, nil)    err = hclient.Write(req)    if err != nil {        log.Printf("發送請求失敗:%s\n", err)        return    }}