From 5c099efccce7434d8672279117134c5fe0565c39 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@avl.com>
Date: Mon, 18 Feb 2013 11:38:01 +0100
Subject: [PATCH] Fix for an Issue #401

---
 lib/controller/checks.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/controller/checks.py b/lib/controller/checks.py
index 06e79e0ab..c3855842e 100644
--- a/lib/controller/checks.py
+++ b/lib/controller/checks.py
@@ -1051,7 +1051,7 @@ def checkNullConnection():
     try:
         page, headers, _ = Request.getPage(method=HTTPMETHOD.HEAD)
 
-        if not page and HTTPHEADER.CONTENT_LENGTH in headers:
+        if not page and HTTPHEADER.CONTENT_LENGTH in (headers or {}):
             kb.nullConnection = NULLCONNECTION.HEAD
 
             infoMsg = "NULL connection is supported with HEAD header"
@@ -1059,7 +1059,7 @@ def checkNullConnection():
         else:
             page, headers, _ = Request.getPage(auxHeaders={HTTPHEADER.RANGE: "bytes=-1"})
 
-            if page and len(page) == 1 and HTTPHEADER.CONTENT_RANGE in headers:
+            if page and len(page) == 1 and HTTPHEADER.CONTENT_RANGE in (headers or {}):
                 kb.nullConnection = NULLCONNECTION.RANGE
 
                 infoMsg = "NULL connection is supported with GET header "