Added more error statuses to trigger an http call retry. Fixes error in #102

Author: marto83

nuget/io.ably.nuspec

@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd">
     <metadata>
         <id>ably.io</id>
-        <version>0.8.4.2</version>
+        <version>0.8.4.3</version>
         <title>ably.io</title>
         <authors>Yavor Ivanov,Martin Georgiev</authors>
         <owners>Ably Real-time Ltd</owners>

src/CommonAssemblyInfo.cs

@@ -204,7 +204,11 @@ internal bool IsRetryableError(Exception ex)
                 var webEx = httpEx.InnerException as WebException;
                 return webEx.Status == WebExceptionStatus.NameResolutionFailure || 
                     webEx.Status == WebExceptionStatus.Timeout ||
-                    webEx.Status == WebExceptionStatus.ConnectFailure;
+                    webEx.Status == WebExceptionStatus.ConnectFailure ||
+                    webEx.Status == WebExceptionStatus.ReceiveFailure ||
+                    webEx.Status == WebExceptionStatus.ConnectionClosed ||
+                    webEx.Status == WebExceptionStatus.SendFailure ||
+                    webEx.Status == WebExceptionStatus.ServerProtocolViolation;
             }
             return false;
         }