From ba1232dfafeffd52cd86cb002b61bd44d8e0fdff Mon Sep 17 00:00:00 2001
From: astaxie <xiemengjun@gmail.com>
Date: Sun, 14 Jun 2015 18:35:46 +0800
Subject: [PATCH] filter should be always the same

---
 router.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/router.go b/router.go
index 688b227d..ca6d917a 100644
--- a/router.go
+++ b/router.go
@@ -611,6 +611,9 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 		if p.enableFilter {
 			if l, ok := p.filters[pos]; ok {
 				for _, filterR := range l {
+					if filterR.returnOnOutput && w.started {
+						return true
+					}
 					if ok, params := filterR.ValidRouter(urlPath); ok {
 						for k, v := range params {
 							context.Input.Params[k] = v