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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.IO;
using System.Runtime;
public abstract class StreamUpgradeInitiator
{
protected StreamUpgradeInitiator()
{
}
public abstract string GetNextUpgrade();
public abstract Stream InitiateUpgrade(Stream stream);
public abstract IAsyncResult BeginInitiateUpgrade(Stream stream, AsyncCallback callback, object state);
public abstract Stream EndInitiateUpgrade(IAsyncResult result);
internal virtual IAsyncResult BeginOpen(TimeSpan timeout, AsyncCallback callback, object state)
{
return new CompletedAsyncResult(callback, state);
}
internal virtual void EndOpen(IAsyncResult result)
{
CompletedAsyncResult.End(result);
}
internal virtual IAsyncResult BeginClose(TimeSpan timeout, AsyncCallback callback, object state)
{
return new CompletedAsyncResult(callback, state);
}
internal virtual void EndClose(IAsyncResult result)
{
CompletedAsyncResult.End(result);
}
internal virtual void Open(TimeSpan timeout)
{
}
internal virtual void Close(TimeSpan timeout)
{
}
}
}
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