From 354da864feefa4c244df005eb683bde5e8ef96a4 Mon Sep 17 00:00:00 2001
From: "bzbarsky%mit.edu"
 <bzbarsky%mit.edu@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Thu, 20 Apr 2006 03:39:50 +0000
Subject: [PATCH] Don't throw when status is gotten after a server timeout or
 some such.  Bug 304980, r=darin, sr=jst

git-svn-id: svn://10.0.0.236/trunk@194939 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/content/base/src/nsXMLHttpRequest.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/mozilla/content/base/src/nsXMLHttpRequest.cpp b/mozilla/content/base/src/nsXMLHttpRequest.cpp
index 2c2798c6105..4c42ec4acff 100644
--- a/mozilla/content/base/src/nsXMLHttpRequest.cpp
+++ b/mozilla/content/base/src/nsXMLHttpRequest.cpp
@@ -630,7 +630,21 @@ nsXMLHttpRequest::GetStatus(PRUint32 *aStatus)
   nsCOMPtr<nsIHttpChannel> httpChannel = GetCurrentHttpChannel();
 
   if (httpChannel) {
-    return httpChannel->GetResponseStatus(aStatus);
+    nsresult rv = httpChannel->GetResponseStatus(aStatus);
+    if (rv == NS_ERROR_NOT_AVAILABLE) {
+      // Someone's calling this before we got a response... Check our
+      // ReadyState.  If we're at 3 or 4, then this means the connection
+      // errored before we got any data; return a somewhat sensible error code
+      // in that case.
+      PRInt32 readyState;
+      GetReadyState(&readyState);
+      if (readyState >= 3) {
+        *aStatus = NS_ERROR_NOT_AVAILABLE;
+        return NS_OK;
+      }
+    }
+
+    return rv;
   }
   *aStatus = 0;