From 19a6d5c9e14a9544130ff2b4f4abfbe537e155c2 Mon Sep 17 00:00:00 2001
From: Brian Hurlow <brian@brianhurlow.com>
Date: Mon, 7 Nov 2016 21:07:33 -0500
Subject: [PATCH] before sending html, check if response is still open

---
 server/index.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/server/index.js b/server/index.js
index d56ab30a111c0..0253a94650545 100644
--- a/server/index.js
+++ b/server/index.js
@@ -190,7 +190,9 @@ export default class Server {
 }
 
 function sendHTML (res, html) {
-  res.setHeader('Content-Type', 'text/html')
-  res.setHeader('Content-Length', Buffer.byteLength(html))
-  res.end(html)
+  if (!res.finished) {
+    res.setHeader('Content-Type', 'text/html')
+    res.setHeader('Content-Length', Buffer.byteLength(html))
+    res.end(html)
+  }
 }