您的服务配置似乎有问题-您为服务端点指定netHttpBinding，没有bindingConfiguration，并且为netTcpBinding定义了配置(但显然未使用).配置的相关服务部分在这里:

Your service config appears to have an issue - you specify netHttpBinding for the service endpoint with no bindingConfiguration, and you have a configuration defined for netTcpBinding (but apparently not used). Relevant service portion of your config here:

<endpoint address="Default.svc"
          binding="netHttpBinding"
          name="TransportLayerServiceEndpoint"
          contract="DemoNamespace.IPipeService" />

请注意，没有设置bindingConfiguration值.我建议将客户端中定义的绑定配置添加到您的服务配置中，然后更新服务端点以使用该绑定:

Note that there is no bindingConfiguration value set. I would suggest adding the binding configuration defined in the client to your service config, and then updating the service endpoint to use that binding:

<endpoint address="Default.svc"
          binding="netHttpBinding"
          bindingConfiguration="TransportLayerServiceEndpoint"
          name="TransportLayerServiceEndpoint"
          contract="DemoNamespace.IPipeService" />

当前您的服务使用的是netHttpBinding的默认值，这可能是您仍然收到错误的原因.

Currently your service is using the default values for netHttpBinding, which is probably the reason you're still getting the error.