Instantiate frame handler for the correct vhost

Fixes #153.

Author: michaelklishin

projects/client/RabbitMQ.Client/src/client/api/ConnectionFactory.cs

@@ -402,6 +402,11 @@ public IFrameHandler CreateFrameHandler(AmqpTcpEndpoint endpoint)
             return ConfigureFrameHandler(fh);
         }
 
+        public IFrameHandler CreateFrameHandlerForHostname(string hostname)
+        {
+            return CreateFrameHandler(this.Endpoint.CloneWithHostname(hostname));
+        }
+
         private IFrameHandler ConfigureFrameHandler(IFrameHandler fh)
         {
             // make sure socket timeouts are higher than heartbeat

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

@@ -574,7 +574,8 @@ public void Init(IList<string> hostnames)
 
         protected void Init(string hostname)
         {
-            m_delegate = new Connection(m_factory, false, m_factory.CreateFrameHandler());
+            m_delegate = new Connection(m_factory, false,
+                m_factory.CreateFrameHandlerForHostname(hostname));
 
             AutorecoveringConnection self = this;
             EventHandler<ShutdownEventArgs> recoveryListener = (_, args) =>