// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
namespace System.ServiceModel.Channels
{
    // All implementations of this interface are required to be thread-safe
 
    internal interface IRequestReplyCorrelator
    {
        // throws if another object of the same type has been added for the same message
        // null is not a valid value for state.
        void Add<T>(Message request, T state);
 
        // returns null if no state is found.
        T Find<T>(Message reply, bool remove);
    }
}