Golang logging http responses (in addition to requests)

Question

I am using Go and the Gorilla web toolkit\'s mux and handler packages to build a complex application, part of which requires a http server. Gorilla\'s mux and handler packa

Answer 1

The accepted answer by Eric Broda won't help much if you want to actually send your response to the client. I've made a modification to that code that will actually work:

func logHandler(fn http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        x, err := httputil.DumpRequest(r, true)
        if err != nil {
            http.Error(w, fmt.Sprint(err), http.StatusInternalServerError)
            return
        }
        log.Println(fmt.Sprintf("%q", x))
        rec := httptest.NewRecorder()
        fn(rec, r)
        log.Println(fmt.Sprintf("%q", rec.Body))        

        // this copies the recorded response to the response writer
        for k, v := range rec.HeaderMap {
            w.Header()[k] = v
        }
        w.WriteHeader(rec.Code)
        rec.Body.WriteTo(w)
    }
}