A Message Service System Based on WCF Duplex Communication

In this paper, a message service system is designed and implemented based on the WCF (Windows Communication Foundation) duplex communication. The uniform message service is provided for the internet clients and the intranet clients by the two WCF bindings (wsDual Http Binding and net Tcp Binding), and the different session objects are managed by a session list. Both the online message service and the offline message service are implemented. The test results show that the difference of the response speed between the different bindings is significant, so it is necessary to build the balance between the performance and the flexibility.