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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.IO;
using System.Runtime;
using System.Security.Authentication;
using System.ServiceModel.Security;
abstract class StreamSecurityUpgradeInitiatorAsyncResult : AsyncResult
{
Stream originalStream;
SecurityMessageProperty remoteSecurity;
Stream upgradedStream;
static AsyncCallback onAuthenticateAsClient = Fx.ThunkCallback(new AsyncCallback(OnAuthenticateAsClient));
public StreamSecurityUpgradeInitiatorAsyncResult(AsyncCallback callback, object state)
: base(callback, state)
{
// empty
}
public void Begin(Stream stream)
{
this.originalStream = stream;
IAsyncResult result;
try
{
result = this.OnBeginAuthenticateAsClient(this.originalStream, onAuthenticateAsClient);
}
catch (AuthenticationException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityNegotiationException(exception.Message,
exception));
}
catch (IOException ioException)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityNegotiationException(
SR.GetString(SR.NegotiationFailedIO, ioException.Message), ioException));
}
if (!result.CompletedSynchronously)
{
return;
}
CompleteAuthenticateAsClient(result);
base.Complete(true);
}
void CompleteAuthenticateAsClient(IAsyncResult result)
{
try
{
this.upgradedStream = this.OnCompleteAuthenticateAsClient(result);
}
catch (AuthenticationException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityNegotiationException(exception.Message,
exception));
}
catch (IOException ioException)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityNegotiationException(
SR.GetString(SR.NegotiationFailedIO, ioException.Message), ioException));
}
this.remoteSecurity = this.ValidateCreateSecurity();
}
public static Stream End(IAsyncResult result, out SecurityMessageProperty remoteSecurity)
{
StreamSecurityUpgradeInitiatorAsyncResult thisPtr = AsyncResult.End<StreamSecurityUpgradeInitiatorAsyncResult>(result);
remoteSecurity = thisPtr.remoteSecurity;
return thisPtr.upgradedStream;
}
static void OnAuthenticateAsClient(IAsyncResult result)
{
if (result.CompletedSynchronously)
{
return;
}
StreamSecurityUpgradeInitiatorAsyncResult thisPtr =
(StreamSecurityUpgradeInitiatorAsyncResult)result.AsyncState;
Exception completionException = null;
try
{
thisPtr.CompleteAuthenticateAsClient(result);
}
#pragma warning suppress 56500 // [....], transferring exception to another thread
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
completionException = e;
}
thisPtr.Complete(false, completionException);
}
protected abstract IAsyncResult OnBeginAuthenticateAsClient(Stream stream, AsyncCallback callback);
protected abstract Stream OnCompleteAuthenticateAsClient(IAsyncResult result);
protected abstract SecurityMessageProperty ValidateCreateSecurity();
}
}
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