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//----------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Security
{
using System.Runtime;
using System.Runtime.InteropServices;
using System.ServiceModel.Channels;
abstract class ApplySecurityAndSendAsyncResult<MessageSenderType> : AsyncResult
where MessageSenderType : class
{
readonly MessageSenderType channel;
readonly SecurityProtocol binding;
volatile bool secureOutgoingMessageDone;
static AsyncCallback sharedCallback = Fx.ThunkCallback(new AsyncCallback(SharedCallback));
SecurityProtocolCorrelationState newCorrelationState;
TimeoutHelper timeoutHelper;
public ApplySecurityAndSendAsyncResult(SecurityProtocol binding, MessageSenderType channel, TimeSpan timeout,
AsyncCallback callback, object state)
: base(callback, state)
{
this.binding = binding;
this.channel = channel;
this.timeoutHelper = new TimeoutHelper(timeout);
}
protected SecurityProtocolCorrelationState CorrelationState
{
get { return newCorrelationState; }
}
protected SecurityProtocol SecurityProtocol
{
get { return this.binding; }
}
protected void Begin(Message message, SecurityProtocolCorrelationState correlationState)
{
IAsyncResult result = this.binding.BeginSecureOutgoingMessage(message, timeoutHelper.RemainingTime(), correlationState, sharedCallback, this);
if (result.CompletedSynchronously)
{
this.binding.EndSecureOutgoingMessage(result, out message, out newCorrelationState);
bool completedSynchronously = this.OnSecureOutgoingMessageComplete(message);
if (completedSynchronously)
{
Complete(true);
}
}
}
protected static void OnEnd(ApplySecurityAndSendAsyncResult<MessageSenderType> self)
{
AsyncResult.End<ApplySecurityAndSendAsyncResult<MessageSenderType>>(self);
}
bool OnSecureOutgoingMessageComplete(Message message)
{
if (message == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("message"));
}
this.secureOutgoingMessageDone = true;
IAsyncResult result = BeginSendCore(this.channel, message, timeoutHelper.RemainingTime(), sharedCallback, this);
if (!result.CompletedSynchronously)
{
return false;
}
EndSendCore(this.channel, result);
return this.OnSendComplete();
}
protected abstract IAsyncResult BeginSendCore(MessageSenderType channel, Message message, TimeSpan timeout, AsyncCallback callback, object state);
protected abstract void EndSendCore(MessageSenderType channel, IAsyncResult result);
bool OnSendComplete()
{
OnSendCompleteCore(timeoutHelper.RemainingTime());
return true;
}
protected abstract void OnSendCompleteCore(TimeSpan timeout);
static void SharedCallback(IAsyncResult result)
{
if (result == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("result"));
}
if (result.CompletedSynchronously)
{
return;
}
ApplySecurityAndSendAsyncResult<MessageSenderType> self = result.AsyncState as ApplySecurityAndSendAsyncResult<MessageSenderType>;
if (self == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.InvalidAsyncResult), "result"));
}
bool completeSelf = false;
Exception completionException = null;
try
{
if (!self.secureOutgoingMessageDone)
{
Message message;
self.binding.EndSecureOutgoingMessage(result, out message, out self.newCorrelationState);
completeSelf = self.OnSecureOutgoingMessageComplete(message);
}
else
{
self.EndSendCore(self.channel, result);
completeSelf = self.OnSendComplete();
}
}
#pragma warning suppress 56500 // covered by FxCOP
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
completeSelf = true;
completionException = e;
}
if (completeSelf)
{
self.Complete(false, completionException);
}
}
}
}
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