Instead of checking the fields, test whether the method is an instance of ChannelCloseOk class.

Author: Hubert Plociniczak

src/client/impl/v0_8/ProtocolBase.cs

@@ -104,10 +104,7 @@ public override void CreateChannelClose(ushort reasonCode,
 
         public override bool CanSendWhileClosed(Command cmd)
         {
-            return (cmd.m_method.ProtocolClassId
-                        == RabbitMQ.Client.Framing.Impl.v0_8.ChannelCloseOk.ClassId)
-                    && (cmd.m_method.ProtocolMethodId
-                        == RabbitMQ.Client.Framing.Impl.v0_8.ChannelCloseOk.MethodId);
+            return cmd.m_method is RabbitMQ.Client.Framing.Impl.v0_8.ChannelCloseOk;
         }
     }
 }

src/client/impl/v0_8qpid/ProtocolBase.cs

@@ -104,10 +104,7 @@ public override void CreateChannelClose(ushort reasonCode,
 
         public override bool CanSendWhileClosed(Command cmd)
         {
-            return (cmd.m_method.ProtocolClassId
-                        == RabbitMQ.Client.Framing.Impl.v0_8qpid.ChannelCloseOk.ClassId)
-                    && (cmd.m_method.ProtocolMethodId
-                        == RabbitMQ.Client.Framing.Impl.v0_8qpid.ChannelCloseOk.MethodId);
+            return cmd.m_method is RabbitMQ.Client.Framing.Impl.v0_8qpid.ChannelCloseOk;
         }
     }
 }

src/client/impl/v0_9/ProtocolBase.cs

@@ -104,10 +104,7 @@ public override void CreateChannelClose(ushort reasonCode,
 
         public override bool CanSendWhileClosed(Command cmd)
         {
-            return (cmd.m_method.ProtocolClassId
-                        == RabbitMQ.Client.Framing.Impl.v0_9.ChannelCloseOk.ClassId)
-                    && (cmd.m_method.ProtocolMethodId
-                        == RabbitMQ.Client.Framing.Impl.v0_9.ChannelCloseOk.MethodId);
+            return cmd.m_method is RabbitMQ.Client.Framing.Impl.v0_9.ChannelCloseOk;
         }
     }
 }