From b02d0a33b1dfef994065a7100f0bbb7eb03f365c Mon Sep 17 00:00:00 2001
From: Taloth Saldono <Taloth@users.noreply.github.com>
Date: Sat, 29 Jul 2017 12:34:34 +0200
Subject: [PATCH] Better error message for DNS exceptions on mono.

---
 .../Http/Dispatchers/ManagedHttpDispatcher.cs      | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs b/src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs
index 60231f75e..5405acf16 100644
--- a/src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs
+++ b/src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs
@@ -73,7 +73,19 @@ namespace NzbDrone.Common.Http.Dispatchers
 
                 if (httpWebResponse == null)
                 {
-                    throw;
+                    // The default messages for WebException on mono are pretty horrible.
+                    if (e.Status == WebExceptionStatus.NameResolutionFailure)
+                    {
+                        throw new WebException($"DNS Name Resolution Failure: '{webRequest.RequestUri.Host}'", e.Status);
+                    }
+                    else if (OsInfo.IsNotWindows)
+                    {
+                        throw new WebException($"{e.Message}: '{webRequest.RequestUri}'", e.Status);
+                    }
+                    else
+                    {
+                        throw;
+                    }
                 }
             }