namespace System.ServiceModel { public abstract class DuplexClientBase<TChannel> : ClientBase<TChannel> where TChannel : class { public IDuplexContextChannel InnerDuplexChannel { get; } protected DuplexClientBase(InstanceContext callbackInstance); protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName); protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName, string remoteAddress); protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName, EndpointAddress remoteAddress); protected DuplexClientBase(InstanceContext callbackInstance, Binding binding, EndpointAddress remoteAddress); } }