From 0e638ffef96a5a7bf9f2642dedff115c30d0a5a5 Mon Sep 17 00:00:00 2001
From: icedream <icedream2k9@die-optimisten.net>
Date: Wed, 7 May 2014 22:04:33 +0200
Subject: [PATCH] Some null-case handling.

---
 src/libnpsharp/Authentication/AuthenticationHelper.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/libnpsharp/Authentication/AuthenticationHelper.cs b/src/libnpsharp/Authentication/AuthenticationHelper.cs
index 95c0fb7..a7f3084 100644
--- a/src/libnpsharp/Authentication/AuthenticationHelper.cs
+++ b/src/libnpsharp/Authentication/AuthenticationHelper.cs
@@ -80,10 +80,16 @@ namespace NPSharp.Authentication
             var rx = new Regex("^(?<status>ok|fail)#(?<text>.+)#(?<userid>[0-9]+)#(?<username>.+)#(?<usermail>.+)#(?<sessiontoken>.+)$");
 			var resp = (HttpWebResponse)req.GetResponse ();
 			using (var respStream = resp.GetResponseStream()) {
+                if (respStream == null)
+                    throw new Exception(@"No answer from server");
 				using (var respReader = new StreamReader(respStream)) {
 					while (!respReader.EndOfStream) {
 						var line = respReader.ReadLine ();
 
+                        // No answer?
+					    if (string.IsNullOrEmpty(line))
+					        continue;
+
 						// DW response line found?
 						if (!rx.IsMatch (line))
 							continue;