From 3d91dae0c4187d559d53b1e448fcaf6216bef2a7 Mon Sep 17 00:00:00 2001
From: Spencer Gibb <spencer@gibb.us>
Date: Thu, 8 Jan 2015 14:52:27 -0700
Subject: [PATCH] only forward if response is not committed.

---
 .../cloud/netflix/zuul/filters/post/SendErrorFilter.java      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilter.java b/spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilter.java
index 044de826..213518e5 100644
--- a/spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilter.java
+++ b/spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilter.java
@@ -50,7 +50,9 @@ public class SendErrorFilter extends ZuulFilter {
 			RequestDispatcher dispatcher = ctx.getRequest().getRequestDispatcher(errorPath);
 			if (dispatcher != null) {
 				ctx.set(SEND_ERROR_FILTER_RAN, true);
-				dispatcher.forward(ctx.getRequest(), ctx.getResponse());
+                if (!ctx.getResponse().isCommitted()) {
+                    dispatcher.forward(ctx.getRequest(), ctx.getResponse());
+                }
 			}
         } catch (Exception e) {
             Throwables.propagate(e);