added multihandler and statushandler

pkg/http/multihandler.go

@@ -26,6 +26,11 @@ func MutliHandler(h map[string]http.Handler) (http.HandlerFunc, error) {
 		}
 	}
 	return func(w http.ResponseWriter, r *http.Request) {
-		h[r.Method].ServeHTTP(w, r)
+		if hdlr, ok := h[r.Method]; ok {
+			hdlr.ServeHTTP(w, r)
+		} else {
+			NotFoundHandler.ServeHTTP(w, r)
+		}
+
 	}, nil
 }

pkg/http/status_handler.go

@@ -0,0 +1,21 @@
+package http
+
+import (
+	"io"
+	"net/http"
+)
+
+// boosted from @matryer
+type StatusHandler int
+
+func (s StatusHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	code := int(s)
+	w.WriteHeader(code)
+	io.WriteString(w, http.StatusText(code))
+}
+
+var (
+	NotFoundHandler       = StatusHandler(404)
+	NotImplementedHandler = StatusHandler(501)
+	NotLegalHandler       = StatusHandler(451)
+)