linux-packaging-mono/mcs/class/referencesource/System.ServiceModel/System/ServiceModel/Channels/MessageState.cs

//------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
    public enum MessageState
    {
        Created,
        Read,
        Written,
        Copied,
        Closed,
    }
}