Ranamed possible authentication exception and altered message

Author: Emile Joubert

projects/client/RabbitMQ.Client/src/client/exceptions/ConnectionException.cs renamed to projects/client/RabbitMQ.Client/src/client/exceptions/PossibleAuthenticationFailureException.cs

@@ -55,15 +55,14 @@
 //
 //---------------------------------------------------------------------------
 using System;
-using System.Security.Authentication;
 
 namespace RabbitMQ.Client.Exceptions
 {
     /// <summary> Thrown when the likely cause is  an 
     /// authentication failure. </summary>
-    public class ConnectionException : InvalidCredentialException 
+    public class PossibleAuthenticationFailureException : Exception
     {
-        public ConnectionException(String msg, Exception inner) 
+        public PossibleAuthenticationFailureException(String msg, Exception inner) 
             : base(msg, inner)
         {
         }

projects/client/RabbitMQ.Client/src/client/impl/ConnectionBase.cs

@@ -999,7 +999,7 @@ public void Open(bool insist)
             }
             catch (OperationInterruptedException e)
             {
-                throw new ConnectionException("Likely authentication failure during connection start", e);
+                throw new PossibleAuthenticationFailureException("Possibly caused by authentication failure", e);
             }
 
             ushort channelMax = (ushort) NegotiatedMaxValue(m_factory.RequestedChannelMax,

projects/client/Unit/src/unit/TestAuth.cs

@@ -88,8 +88,8 @@ public void TestAuthFailure()
             {                
                 foreach (Object failureReason in bue.ConnectionErrors.Values)
                 {
-                    Assert.IsInstanceOfType(typeof(ConnectionException), failureReason);
-                    Assert.That(((ConnectionException)failureReason).Message.ToLower().Contains("auth"));
+                    Assert.IsInstanceOfType(typeof(PossibleAuthenticationFailureException), failureReason);
+                    Assert.That(((PossibleAuthenticationFailureException)failureReason).Message.ToLower().Contains("auth"));
                 }              
             }
         }