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单项选择题 A Windows Communication Foundation (WCF) solution provides a session-based counter.The service is self-hosted. The hosting code is as follows: ServiceHost host = new ServiceHost(typeof(CounterService)); NetTcpBinding binding1 = new NetTcpBinding(SecurityMode.None); host.AddServiceEndpoint("MyApplication.ICounterService", binding1, "net.tcp://localhost:23456"); host.Open（　）; This service is currently exposed over TCP, but needs to be exposed to external clients over HTTP. Therefore, a new service endpoint is created with the following code:host.AddServiceEndpoint("MyApplication.ICounterService", binding2, "http://localhost:12345");You need to complete the implementation and ensure that the session-based counter will perform over HTTP as it does over TCP.What should you do?（）

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  • A

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