From 1b97832a8ae9983e4f15befe142f5ea0626707f1 Mon Sep 17 00:00:00 2001
From: Christoph Kerschbaumer <mozilla@christophkerschbaumer.com>
Date: Thu, 19 Feb 2015 13:43:40 -0800
Subject: [PATCH] Bug 1111834 - CORS request after preflight should not follow
 30x redirect. r=sicking, a=lmandel

---
 dom/base/Navigator.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dom/base/Navigator.cpp b/dom/base/Navigator.cpp
index 020e370..727b7cb7 100644
--- a/dom/base/Navigator.cpp
+++ b/dom/base/Navigator.cpp
@@ -1278,6 +1278,12 @@ Navigator::SendBeacon(const nsAString& aUrl,
       !contentType.Equals(APPLICATION_WWW_FORM_URLENCODED) &&
       !contentType.Equals(MULTIPART_FORM_DATA) &&
       !contentType.Equals(TEXT_PLAIN)) {
+
+    // we need to set the sameOriginChecker as a notificationCallback
+    // so we can tell the channel not to follow redirects
+    nsCOMPtr<nsIInterfaceRequestor> soc = nsContentUtils::GetSameOriginChecker();
+    channel->SetNotificationCallbacks(soc);
+
     nsCOMPtr<nsIChannel> preflightChannel;
     nsTArray<nsCString> unsafeHeaders;
     unsafeHeaders.AppendElement(NS_LITERAL_CSTRING("Content-Type"));
-- 
2.2.1