Log Skyhook connection failures with more info.

src/NzbDrone.Core/Exceptions/NzbDroneClientException.cs

@@ -1,4 +1,5 @@
-using System.Net;
+using System;
+using System.Net;
 using NzbDrone.Common.Exceptions;
 
 namespace NzbDrone.Core.Exceptions
@@ -7,7 +8,13 @@ namespace NzbDrone.Core.Exceptions
     {
         public HttpStatusCode StatusCode { get; private set; }
 
-        public NzbDroneClientException(HttpStatusCode statusCode, string message, params object[] args) : base(message, args)
+        public NzbDroneClientException(HttpStatusCode statusCode, string message, params object[] args)
+            : base(message, args)
+        {
+            StatusCode = statusCode;
+        }
+        public NzbDroneClientException(HttpStatusCode statusCode, string message, Exception innerException, params object[] args)
+            : base(message, innerException, args)
         {
             StatusCode = statusCode;
         }

src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookException.cs

@@ -13,5 +13,10 @@ namespace NzbDrone.Core.MetadataSource.SkyHook
             : base(HttpStatusCode.ServiceUnavailable, message, args)
         {
         }
+
+        public SkyHookException(string message, Exception innerException, params object[] args)
+            : base(HttpStatusCode.ServiceUnavailable, innerException, message, args)
+        {
+        }
     }
 }

src/NzbDrone.Core/MetadataSource/SkyHook/SkyHookProxy.cs

@@ -109,14 +109,20 @@ namespace NzbDrone.Core.MetadataSource.SkyHook
 
                 return httpResponse.Resource.SelectList(MapSearchResult);
             }
-            catch (HttpException)
+            catch (HttpException ex)
             {
-                throw new SkyHookException("Search for '{0}' failed. Unable to communicate with SkyHook.", title);
+                _logger.Warn(ex);
+                throw new SkyHookException("Search for '{0}' failed. Unable to communicate with SkyHook.", ex, title);
+            }
+            catch (WebException ex)
+            {
+                _logger.Warn(ex);
+                throw new SkyHookException("Search for '{0}' failed. Unable to communicate with SkyHook.", ex, title, ex.Message);
             }
             catch (Exception ex)
             {
-                _logger.Warn(ex, ex.Message);
-                throw new SkyHookException("Search for '{0}' failed. Invalid response received from SkyHook.", title);
+                _logger.Warn(ex);
+                throw new SkyHookException("Search for '{0}' failed. Invalid response received from SkyHook.", ex, title);
             }
         }