namespace System.ServiceModel.Channels { public interface IReplyChannel : IChannel, ICommunicationObject { EndpointAddress LocalAddress { get; } RequestContext ReceiveRequest(); RequestContext ReceiveRequest(TimeSpan timeout); IAsyncResult BeginReceiveRequest(AsyncCallback callback, object state); IAsyncResult BeginReceiveRequest(TimeSpan timeout, AsyncCallback callback, object state); RequestContext EndReceiveRequest(IAsyncResult result); bool TryReceiveRequest(TimeSpan timeout, out RequestContext context); IAsyncResult BeginTryReceiveRequest(TimeSpan timeout, AsyncCallback callback, object state); bool EndTryReceiveRequest(IAsyncResult result, out RequestContext context); bool WaitForRequest(TimeSpan timeout); IAsyncResult BeginWaitForRequest(TimeSpan timeout, AsyncCallback callback, object state); bool EndWaitForRequest(IAsyncResult result); } }