Is it possible to wrap http.ServeHttp in go to add sessions using alexedwards/scs/v2

Question

I am trying to add sessions to an existing http server written in go. I have code like the following

type HttpServer struct {
    getRoutes  map[string]http.HandlerFunc // pattern => handler
    postRoutes map[string]http.HandlerFunc
    server     http.Server
}
func (s *HttpServer) Run() {
    address := "127.0.0.1:8080"
    s.server = http.Server{
        Addr:           address,
        Handler:        s,
        ReadTimeout:    10 * time.Second,
        WriteTimeout:   10 * time.Second,
        MaxHeaderBytes: 1 << 20,
    }
    log.Fatal(s.server.ListenAndServe())
}
func (s *HttpServer) ServeHTTP(writer http.ResponseWriter, r *http.Request) {
     ...
}

I would like to add sessions using https://pkg.go.dev/github.com/alexedwards/scs/v2#SessionManager.LoadAndSave

The example code in the link is

    mux := http.NewServeMux()
    mux.HandleFunc("/put", putHandler)
    mux.HandleFunc("/get", getHandler)

    // Wrap your handlers with the LoadAndSave() middleware.
    http.ListenAndServe(":4000", sessionManager.LoadAndSave(mux))

The example code passes mux into LoadAndSave, then passes the new handler into http.ListenAndServe(port, newHandler). In my case the handler comes from a ServeHttp method I added to the *HttpServer struct. The handler in the example case comes from the mux.

I am new to go. Is it possible to pass my ServeHTTP method into LoadAndSave and use the handler returned from LoadAndSave? If not, is there a way to pass the http.Server struct fields used in my example into http.ListenAndServe(Port, handler)?

Peter · Accepted Answer · 2023-07-03 15:36:45Z

1

Yes. *HttpServer implements the http.Handler interface so you can pass it to LoadAndSave:

func (s *HttpServer) Run() {
    address := "127.0.0.1:8080"
    s.server = http.Server{
        Addr:           address,
        Handler:        sessionManager.LoadAndSave(s),
        ReadTimeout:    10 * time.Second,
        WriteTimeout:   10 * time.Second,
        MaxHeaderBytes: 1 << 20,
    }
    log.Fatal(s.server.ListenAndServe())
}

answered Jul 3, 2023 at 15:36

Peter

32k6 gold badges57 silver badges68 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Is it possible to wrap http.ServeHttp in go to add sessions using alexedwards/scs/v2

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related