Errors -Azure Service bus

Unable to reach xxxx.servicebus.appfabriclabs.com via TCP (9351, 9352) or HTTP (80, 443)

Help link : msdn1, msdn2, msdn3,

This has nothing to do with error description given above.
I selected wrong  Microsoft.ServiceBus assembly. On first Instance I wrongfully referenced with Version 1.0 and on Second Instance I used Version 2.0 (C:\Program Files\Windows Azure ServiceBus EAI & EDI Labs SDK\Assemblies\NET4.0) .
 Finally I selected correct assembly 1.5 (C:\Program Files\Windows Azure AppFabric SDK\V1.5\Assemblies\NET4.0)

Above Error I was able to figure from ServiceUri . Service generated with wrongful Microsoft.ServiceBus was  XXXX.servicebus.appfabriclabs.com  where as correct one should have been sb://XXXX.servicebus.windows.net/EchoService.