public static Activity BoundReceiveOperation(MsmqReceiveHelper receiver)
{
if ((DiagnosticUtility.ShouldUseActivity && (ServiceModelActivity.Current != null)) && (ActivityType.ProcessAction != ServiceModelActivity.Current.ActivityType))
{
return ServiceModelActivity.BoundOperation(receiver.Activity);
}
return null;
}
public static Activity BoundOpenOperation(MsmqReceiveHelper receiver)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(TraceEventType.Information, 0x80036, System.ServiceModel.SR.GetString("TraceCodeTransportListen", new object[] { receiver.ListenUri.ToString() }), receiver);
}
return ServiceModelActivity.BoundOperation(receiver.Activity);
}
public Msmq4PoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
this.timer = new IOThreadTimer(new Action<object>(OnTimer), null, false);
this.disposed = false;
this.mainQueueName = this.ReceiveParameters.AddressTranslator.UriToFormatName(this.ListenUri);
this.poisonQueueName = this.ReceiveParameters.AddressTranslator.UriToFormatName(new Uri(this.ListenUri.AbsoluteUri + ";poison"));
this.retryQueueName = this.ReceiveParameters.AddressTranslator.UriToFormatName(new Uri(this.ListenUri.AbsoluteUri + ";retry"));
}
internal static Message DecodeIntegrationDatagram(MsmqIntegrationChannelListener listener, MsmqReceiveHelper receiver, MsmqIntegrationInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
Message message2;
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
Message message = Message.CreateMessage(MessageVersion.None, (string) null);
bool flag = true;
try
{
SecurityMessageProperty property = listener.ValidateSecurity(msmqMessage);
if (property != null)
{
message.Properties.Security = property;
}
MsmqIntegrationMessageProperty property2 = new MsmqIntegrationMessageProperty();
msmqMessage.SetMessageProperties(property2);
int length = msmqMessage.BodyLength.Value;
if (length > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
byte[] bufferCopy = msmqMessage.Body.GetBufferCopy(length);
MemoryStream bodyStream = new MemoryStream(bufferCopy, 0, bufferCopy.Length, false);
object obj2 = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
obj2 = DeserializeForIntegration(listener, bodyStream, property2, messageProperty.LookupId);
}
catch (SerializationException exception)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqDeserializationError"), exception));
}
property2.Body = obj2;
message.Properties["MsmqIntegrationMessageProperty"] = property2;
bodyStream.Seek(0L, SeekOrigin.Begin);
message.Headers.To = listener.Uri;
flag = false;
MsmqDiagnostics.TransferFromTransport(message);
}
message2 = message;
}
finally
{
if (flag)
{
message.Close();
}
}
}
return message2;
}
internal TryTransactedReceiveAsyncResult(MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage,
TimeSpan timeout, MsmqTransactionMode transactionMode, AsyncCallback callback, object state)
: base(callback, state)
{
this.timeoutHelper = new TimeoutHelper(timeout);
this.txCurrent = Transaction.Current;
this.receiver = receiver;
this.msmqMessage = msmqMessage;
this.transactionMode = transactionMode;
ActionItem.Schedule(onComplete, this);
}
public static Activity BoundReceiveOperation(MsmqReceiveHelper receiver)
{
if (DiagnosticUtility.ShouldUseActivity && null != ServiceModelActivity.Current && ActivityType.ProcessAction != ServiceModelActivity.Current.ActivityType)
{
return(ServiceModelActivity.BoundOperation(receiver.Activity));
}
else
{
return(null);
}
}
public MsmqInputChannelBase(MsmqInputChannelListenerBase listener, IMsmqMessagePool messagePool)
: base(listener)
{
this.receiveParameters = listener.ReceiveParameters;
this.receiver = new MsmqReceiveHelper(listener.ReceiveParameters, listener.Uri, messagePool, this, listener);
this.localAddress = new EndpointAddress(listener.Uri);
this.listener = listener;
if (this.receiveParameters.ReceiveContextSettings.Enabled)
{
this.receiveContextManager = new MsmqReceiveContextLockManager(this.receiveParameters.ReceiveContextSettings, this.receiver.Queue);
}
}
internal static MsmqQueue CreateMsmqQueue(MsmqReceiveHelper receiver)
{
if (!receiver.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
return(new MsmqQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), 1));
}
if (Version < longhornVersion)
{
return(new MsmqDefaultLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), 1));
}
return(new MsmqSubqueueLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), receiver.ListenUri.Host, 1));
}
public static Activity BoundOpenOperation(MsmqReceiveHelper receiver)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(
TraceEventType.Information,
TraceCode.TransportListen,
SR.GetString(SR.TraceCodeTransportListen, receiver.ListenUri.ToString()),
receiver);
}
return(ServiceModelActivity.BoundOperation(receiver.Activity));
}
public static Activity BoundOpenOperation(MsmqReceiveHelper receiver)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceEvent(
TraceEventType.Information,
TraceCode.TransportListen,
SR.GetString(SR.TraceCodeTransportListen, receiver.ListenUri.ToString()),
receiver);
}
return ServiceModelActivity.BoundOperation(receiver.Activity);
}
internal static MsmqQueue CreateMsmqQueue(MsmqReceiveHelper receiver)
{
if (!receiver.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
return new MsmqQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), 1);
}
if (Version < longhornVersion)
{
return new MsmqDefaultLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), 1);
}
return new MsmqSubqueueLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), receiver.ListenUri.Host, 1);
}
public MsmqInputChannelBase(MsmqInputChannelListenerBase listener, IMsmqMessagePool messagePool)
: base(listener)
{
this.receiveParameters = listener.ReceiveParameters;
this.receiver = new MsmqReceiveHelper(listener.ReceiveParameters, listener.Uri, messagePool, this, listener);
this.localAddress = new EndpointAddress(listener.Uri);
this.listener = listener;
if (this.receiveParameters.ReceiveContextSettings.Enabled)
{
this.receiveContextManager = new MsmqReceiveContextLockManager(this.receiveParameters.ReceiveContextSettings, this.receiver.Queue);
}
}
public static ServiceModelActivity StartListenAtActivity(MsmqReceiveHelper receiver)
{
ServiceModelActivity activity = receiver.Activity;
if (DiagnosticUtility.ShouldUseActivity && null == activity)
{
activity = ServiceModelActivity.CreateActivity(true);
if (null != FxTrace.Trace)
{
FxTrace.Trace.TraceTransfer(activity.Id);
}
ServiceModelActivity.Start(activity, SR.GetString(SR.ActivityListenAt, receiver.ListenUri.ToString()), ActivityType.ListenAt);
}
return activity;
}
public static ServiceModelActivity StartListenAtActivity(MsmqReceiveHelper receiver)
{
ServiceModelActivity activity = receiver.Activity;
if (DiagnosticUtility.ShouldUseActivity && (activity == null))
{
activity = ServiceModelActivity.CreateActivity(true);
if (FxTrace.Trace != null)
{
FxTrace.Trace.TraceTransfer(activity.Id);
}
ServiceModelActivity.Start(activity, System.ServiceModel.SR.GetString("ActivityListenAt", new object[] { receiver.ListenUri.ToString() }), ActivityType.ListenAt);
}
return(activity);
}
public static ServiceModelActivity StartListenAtActivity(MsmqReceiveHelper receiver)
{
ServiceModelActivity activity = receiver.Activity;
if (DiagnosticUtility.ShouldUseActivity && null == activity)
{
activity = ServiceModelActivity.CreateActivity(true);
if (null != FxTrace.Trace)
{
FxTrace.Trace.TraceTransfer(activity.Id);
}
ServiceModelActivity.Start(activity, SR.GetString(SR.ActivityListenAt, receiver.ListenUri.ToString()), ActivityType.ListenAt);
}
return(activity);
}
internal static IPoisonHandlingStrategy CreatePoisonHandler(MsmqReceiveHelper receiver)
{
if (!receiver.Transactional)
{
return(new MsmqNonTransactedPoisonHandler(receiver));
}
if (Version < longhornVersion)
{
return(new Msmq3PoisonHandler(receiver));
}
if (receiver.ListenUri.AbsoluteUri.Contains(";"))
{
return(new Msmq4SubqueuePoisonHandler(receiver));
}
return(new Msmq4PoisonHandler(receiver));
}
internal static IPoisonHandlingStrategy CreatePoisonHandler(MsmqReceiveHelper receiver)
{
if (!receiver.Transactional)
{
return new MsmqNonTransactedPoisonHandler(receiver);
}
if (Version < longhornVersion)
{
return new Msmq3PoisonHandler(receiver);
}
if (receiver.ListenUri.AbsoluteUri.Contains(";"))
{
return new Msmq4SubqueuePoisonHandler(receiver);
}
return new Msmq4PoisonHandler(receiver);
}
internal MsmqInputSessionChannelListener(MsmqBindingElementBase bindingElement, BindingContext context, MsmqReceiveParameters receiveParameters)
: base(bindingElement, context, receiveParameters, TransportDefaults.GetDefaultMessageEncoderFactory())
{
SetSecurityTokenAuthenticator(MsmqUri.NetMsmqAddressTranslator.Scheme, context);
this.receiver = new MsmqReceiveHelper(
this.ReceiveParameters,
this.Uri,
new MsmqInputMessagePool((this.ReceiveParameters as MsmqTransportReceiveParameters).MaxPoolSize),
null,
this
);
if (this.ReceiveParameters.ReceiveContextSettings.Enabled)
{
this.receiveContextManager = new MsmqReceiveContextLockManager(this.ReceiveParameters.ReceiveContextSettings, this.receiver.Queue);
}
}
internal static MsmqQueue CreateMsmqQueue(MsmqReceiveHelper receiver)
{
if (receiver.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
if (Msmq.Version < longhornVersion)
{
return(new MsmqDefaultLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), UnsafeNativeMethods.MQ_RECEIVE_ACCESS));
}
else
{
return(new MsmqSubqueueLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), receiver.ListenUri.Host, UnsafeNativeMethods.MQ_RECEIVE_ACCESS));
}
}
else
{
return(new MsmqQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), UnsafeNativeMethods.MQ_RECEIVE_ACCESS));
}
}
public void FinalDisposition(MsmqMessageProperty messageProperty)
{
switch (this.receiver.MsmqReceiveParameters.ReceiveErrorHandling)
{
case ReceiveErrorHandling.Fault:
MsmqReceiveHelper.TryAbortTransactionCurrent();
if (this.receiver.ChannelListener != null)
{
this.receiver.ChannelListener.FaultListener();
}
if (this.receiver.Channel != null)
{
this.receiver.Channel.FaultChannel();
}
return;
case ReceiveErrorHandling.Drop:
this.receiver.DropOrRejectReceivedMessage(messageProperty, false);
return;
}
}
public bool ReceiveContextPoisonHandling(MsmqMessageProperty messageProperty)
{
int num = this.ReceiveParameters.ReceiveRetryCount + 1;
int maxRetryCycles = this.ReceiveParameters.MaxRetryCycles;
int num3 = (2 * num) + 1;
int num4 = messageProperty.MoveCount / (num3 + 2);
int num5 = num4 * (num3 + 2);
int num6 = messageProperty.MoveCount - num5;
lock (this)
{
if (this.disposed)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(base.GetType().ToString()));
}
if (num4 > maxRetryCycles)
{
this.FinalDisposition(messageProperty);
return(true);
}
if (num6 >= num3)
{
if (num4 < maxRetryCycles)
{
MsmqReceiveHelper.MoveReceivedMessage(this.lockQueueForReceive, this.retryQueueForMove, messageProperty.LookupId);
MsmqDiagnostics.PoisonMessageMoved(messageProperty.MessageId, false, this.receiver.InstanceId);
}
else
{
this.FinalDisposition(messageProperty);
}
return(true);
}
return(false);
}
}
internal static IInputSessionChannel DecodeTransportSessiongram(MsmqInputSessionChannelListener listener, MsmqInputMessage msmqMessage, MsmqMessageProperty messageProperty, MsmqReceiveContextLockManager receiveContextManager)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
int num4;
long num1 = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
MsmqReceiveHelper msmqReceiveHelper = listener.MsmqReceiveHelper;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException exception)
{
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception);
}
if (modeDecoder.Mode != FramingMode.Simplex)
{
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadFrame")));
}
MsmqInputSessionChannel channel = null;
ServerSessionDecoder decoder2 = new ServerSessionDecoder(0L, 0x800, 0x100);
try
{
do
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder2.CreatePrematureEOFException());
}
int num3 = decoder2.Decode(incoming, offset, size);
offset += num3;
size -= num3;
}while (ServerSessionDecoder.State.EnvelopeStart != decoder2.CurrentState);
}
catch (ProtocolException exception2)
{
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception2);
}
MessageEncoder encoder = listener.MessageEncoderFactory.CreateSessionEncoder();
if (!encoder.IsContentTypeSupported(decoder2.ContentType))
{
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadContentType")));
}
ReceiveContext sessiongramReceiveContext = null;
if (msmqReceiveHelper.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
sessiongramReceiveContext = receiveContextManager.CreateMsmqReceiveContext(msmqMessage.LookupId.Value);
}
channel = new MsmqInputSessionChannel(listener, Transaction.Current, sessiongramReceiveContext);
Message item = DecodeSessiongramMessage(listener, channel, encoder, messageProperty, incoming, offset, decoder2.EnvelopeSize);
SecurityMessageProperty property = null;
try
{
property = listener.ValidateSecurity(msmqMessage);
}
catch (Exception exception3)
{
if (Fx.IsFatal(exception3))
{
throw;
}
channel.FaultChannel();
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception3);
}
if (property != null)
{
item.Properties.Security = property;
}
item.Properties["MsmqMessageProperty"] = messageProperty;
channel.EnqueueAndDispatch(item);
listener.RaiseMessageReceived();
Label_01F6:
try
{
if (size <= 0)
{
channel.FaultChannel();
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder2.CreatePrematureEOFException());
}
num4 = decoder2.Decode(incoming, offset, size);
}
catch (ProtocolException exception4)
{
channel.FaultChannel();
msmqReceiveHelper.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception4);
}
offset += num4;
size -= num4;
if (ServerSessionDecoder.State.End != decoder2.CurrentState)
{
if (ServerSessionDecoder.State.EnvelopeStart == decoder2.CurrentState)
{
item = DecodeSessiongramMessage(listener, channel, encoder, messageProperty, incoming, offset, decoder2.EnvelopeSize);
if (property != null)
{
item.Properties.Security = (SecurityMessageProperty)property.CreateCopy();
}
item.Properties["MsmqMessageProperty"] = messageProperty;
channel.EnqueueAndDispatch(item);
listener.RaiseMessageReceived();
}
goto Label_01F6;
}
channel.Shutdown();
MsmqDiagnostics.SessiongramReceived(channel.Session.Id, msmqMessage.MessageId, channel.InternalPendingItems);
return(channel);
}
}
internal static IInputSessionChannel DecodeTransportSessiongram(
MsmqInputSessionChannelListener listener,
MsmqInputMessage msmqMessage,
MsmqMessageProperty messageProperty,
MsmqReceiveContextLockManager receiveContextManager)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
long lookupId = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
MsmqReceiveHelper receiver = listener.MsmqReceiveHelper;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (modeDecoder.Mode != FramingMode.Simplex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadFrame)));
}
MsmqInputSessionChannel channel = null;
ServerSessionDecoder sessionDecoder = new ServerSessionDecoder(0, defaultMaxViaSize, defaultMaxContentTypeSize);
try
{
for (;;)
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, sessionDecoder.CreatePrematureEOFException());
}
int decoded = sessionDecoder.Decode(incoming, offset, size);
offset += decoded;
size -= decoded;
if (ServerSessionDecoder.State.EnvelopeStart == sessionDecoder.CurrentState)
{
break;
}
}
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
MessageEncoder encoder = listener.MessageEncoderFactory.CreateSessionEncoder();
if (!encoder.IsContentTypeSupported(sessionDecoder.ContentType))
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadContentType)));
}
ReceiveContext receiveContext = null;
// tack on the receive context property depending on the receive mode
if (receiver.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
receiveContext = receiveContextManager.CreateMsmqReceiveContext(msmqMessage.LookupId.Value);
}
channel = new MsmqInputSessionChannel(listener, Transaction.Current, receiveContext);
Message message = DecodeSessiongramMessage(listener, channel, encoder, messageProperty, incoming, offset, sessionDecoder.EnvelopeSize);
SecurityMessageProperty securityProperty = null;
try
{
securityProperty = listener.ValidateSecurity(msmqMessage);
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
{
throw;
}
channel.FaultChannel();
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (null != securityProperty)
{
message.Properties.Security = securityProperty;
}
message.Properties[MsmqMessageProperty.Name] = messageProperty;
channel.EnqueueAndDispatch(message);
listener.RaiseMessageReceived();
for (;;)
{
int decoded;
try
{
if (size <= 0)
{
channel.FaultChannel();
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, sessionDecoder.CreatePrematureEOFException());
}
decoded = sessionDecoder.Decode(incoming, offset, size);
}
catch (ProtocolException ex)
{
channel.FaultChannel();
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
offset += decoded;
size -= decoded;
if (ServerSessionDecoder.State.End == sessionDecoder.CurrentState)
{
break;
}
if (ServerSessionDecoder.State.EnvelopeStart == sessionDecoder.CurrentState)
{
message = DecodeSessiongramMessage(listener, channel, encoder, messageProperty, incoming, offset, sessionDecoder.EnvelopeSize);
if (null != securityProperty)
{
message.Properties.Security = (SecurityMessageProperty)securityProperty.CreateCopy();
}
message.Properties[MsmqMessageProperty.Name] = messageProperty;
channel.EnqueueAndDispatch(message);
listener.RaiseMessageReceived();
}
}
channel.Shutdown();
MsmqDiagnostics.SessiongramReceived(channel.Session.Id, msmqMessage.MessageId, channel.InternalPendingItems);
return(channel);
}
}
public static ServiceModelActivity StartListenAtActivity(MsmqReceiveHelper receiver)
{
ServiceModelActivity activity = receiver.Activity;
if (DiagnosticUtility.ShouldUseActivity && (activity == null))
{
activity = ServiceModelActivity.CreateActivity(true);
if (FxTrace.Trace != null)
{
FxTrace.Trace.TraceTransfer(activity.Id);
}
ServiceModelActivity.Start(activity, System.ServiceModel.SR.GetString("ActivityListenAt", new object[] { receiver.ListenUri.ToString() }), ActivityType.ListenAt);
}
return activity;
}
internal static Message DecodeTransportDatagram(MsmqInputChannelListener listener, MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
long lookupId = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (modeDecoder.Mode != FramingMode.SingletonSized)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadFrame)));
}
ServerSingletonSizedDecoder decoder = new ServerSingletonSizedDecoder(0, defaultMaxViaSize, defaultMaxContentTypeSize);
try
{
for (;;)
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder.CreatePrematureEOFException());
}
int decoded = decoder.Decode(incoming, offset, size);
offset += decoded;
size -= decoded;
if (decoder.CurrentState == ServerSingletonSizedDecoder.State.Start)
{
break;
}
}
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
if (!listener.MessageEncoderFactory.Encoder.IsContentTypeSupported(decoder.ContentType))
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadContentType)));
}
byte[] envelopeBuffer = listener.BufferManager.TakeBuffer(size);
Buffer.BlockCopy(incoming, offset, envelopeBuffer, 0, size);
Message message = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
message = listener.MessageEncoderFactory.Encoder.ReadMessage(
new ArraySegment <byte>(envelopeBuffer, 0, size), listener.BufferManager);
}
catch (XmlException e)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadXml), e));
}
bool closeMessage = true;
try
{
SecurityMessageProperty securityProperty = listener.ValidateSecurity(msmqMessage);
if (null != securityProperty)
{
message.Properties.Security = securityProperty;
}
closeMessage = false;
MsmqDiagnostics.TransferFromTransport(message);
return(message);
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
{
throw;
}
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
finally
{
if (closeMessage)
{
message.Close();
}
}
}
}
}
internal static Message DecodeIntegrationDatagram(MsmqIntegrationChannelListener listener, MsmqReceiveHelper receiver, MsmqIntegrationInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
Message message = Message.CreateMessage(MessageVersion.None, (string)null);
bool closeMessage = true;
try
{
SecurityMessageProperty securityProperty = listener.ValidateSecurity(msmqMessage);
if (null != securityProperty)
{
message.Properties.Security = securityProperty;
}
MsmqIntegrationMessageProperty integrationProperty = new MsmqIntegrationMessageProperty();
msmqMessage.SetMessageProperties(integrationProperty);
int size = msmqMessage.BodyLength.Value;
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
byte[] bodyBytes = msmqMessage.Body.GetBufferCopy(size);
MemoryStream bodyStream = new MemoryStream(bodyBytes, 0, bodyBytes.Length, false);
object body = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
body = DeserializeForIntegration(listener, bodyStream, integrationProperty, messageProperty.LookupId);
}
catch (SerializationException e)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqDeserializationError), e));
}
integrationProperty.Body = body;
message.Properties[MsmqIntegrationMessageProperty.Name] = integrationProperty;
bodyStream.Seek(0, SeekOrigin.Begin);
message.Headers.To = listener.Uri;
closeMessage = false;
MsmqDiagnostics.TransferFromTransport(message);
}
return(message);
}
finally
{
if (closeMessage)
{
message.Close();
}
}
}
}
internal TryNonTransactedReceiveAsyncResult(MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, TimeSpan timeout, AsyncCallback callback, object state)
: base(callback, state)
{
this.receiver = receiver;
this.msmqMessage = msmqMessage;
receiver.Queue.BeginTryReceive(msmqMessage, timeout, onCompleteStatic, this);
}
internal TryNonTransactedReceiveAsyncResult(MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, TimeSpan timeout, AsyncCallback callback, object state) : base(callback, state)
{
this.receiver = receiver;
this.msmqMessage = msmqMessage;
receiver.Queue.BeginTryReceive(msmqMessage, timeout, onCompleteStatic, this);
}
internal static Message DecodeTransportDatagram(MsmqInputChannelListener listener, MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
Message message2;
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
long num1 = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException exception)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception);
}
if (modeDecoder.Mode != FramingMode.SingletonSized)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadFrame")));
}
ServerSingletonSizedDecoder decoder2 = new ServerSingletonSizedDecoder(0L, 0x800, 0x100);
try
{
do
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder2.CreatePrematureEOFException());
}
int num3 = decoder2.Decode(incoming, offset, size);
offset += num3;
size -= num3;
}
while (decoder2.CurrentState != ServerSingletonSizedDecoder.State.Start);
}
catch (ProtocolException exception2)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception2);
}
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
if (!listener.MessageEncoderFactory.Encoder.IsContentTypeSupported(decoder2.ContentType))
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadContentType")));
}
byte[] dst = listener.BufferManager.TakeBuffer(size);
Buffer.BlockCopy(incoming, offset, dst, 0, size);
Message message = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
message = listener.MessageEncoderFactory.Encoder.ReadMessage(new ArraySegment<byte>(dst, 0, size), listener.BufferManager);
}
catch (XmlException exception3)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadXml"), exception3));
}
bool flag = true;
try
{
SecurityMessageProperty property = listener.ValidateSecurity(msmqMessage);
if (property != null)
{
message.Properties.Security = property;
}
flag = false;
MsmqDiagnostics.TransferFromTransport(message);
message2 = message;
}
catch (Exception exception4)
{
if (Fx.IsFatal(exception4))
{
throw;
}
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception4);
}
finally
{
if (flag)
{
message.Close();
}
}
}
}
return message2;
}
internal MsmqNonTransactedPoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
}
internal static Message DecodeTransportDatagram(MsmqInputChannelListener listener, MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
long lookupId = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (modeDecoder.Mode != FramingMode.SingletonSized)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadFrame)));
}
ServerSingletonSizedDecoder decoder = new ServerSingletonSizedDecoder(0, defaultMaxViaSize, defaultMaxContentTypeSize);
try
{
for (;;)
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder.CreatePrematureEOFException());
}
int decoded = decoder.Decode(incoming, offset, size);
offset += decoded;
size -= decoded;
if (decoder.CurrentState == ServerSingletonSizedDecoder.State.Start)
break;
}
}
catch (ProtocolException ex)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
if (!listener.MessageEncoderFactory.Encoder.IsContentTypeSupported(decoder.ContentType))
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadContentType)));
}
byte[] envelopeBuffer = listener.BufferManager.TakeBuffer(size);
Buffer.BlockCopy(incoming, offset, envelopeBuffer, 0, size);
Message message = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
message = listener.MessageEncoderFactory.Encoder.ReadMessage(
new ArraySegment<byte>(envelopeBuffer, 0, size), listener.BufferManager);
}
catch (XmlException e)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqBadXml), e));
}
bool closeMessage = true;
try
{
SecurityMessageProperty securityProperty = listener.ValidateSecurity(msmqMessage);
if (null != securityProperty)
message.Properties.Security = securityProperty;
closeMessage = false;
MsmqDiagnostics.TransferFromTransport(message);
return message;
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
throw;
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, ex);
}
finally
{
if (closeMessage)
{
message.Close();
}
}
}
}
}
public Msmq4SubqueuePoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
}
internal static Message DecodeIntegrationDatagram(MsmqIntegrationChannelListener listener, MsmqReceiveHelper receiver, MsmqIntegrationInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
Message message = Message.CreateMessage(MessageVersion.None, (string)null);
bool closeMessage = true;
try
{
SecurityMessageProperty securityProperty = listener.ValidateSecurity(msmqMessage);
if (null != securityProperty)
message.Properties.Security = securityProperty;
MsmqIntegrationMessageProperty integrationProperty = new MsmqIntegrationMessageProperty();
msmqMessage.SetMessageProperties(integrationProperty);
int size = msmqMessage.BodyLength.Value;
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
byte[] bodyBytes = msmqMessage.Body.GetBufferCopy(size);
MemoryStream bodyStream = new MemoryStream(bodyBytes, 0, bodyBytes.Length, false);
object body = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
body = DeserializeForIntegration(listener, bodyStream, integrationProperty, messageProperty.LookupId);
}
catch (SerializationException e)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(SR.GetString(SR.MsmqDeserializationError), e));
}
integrationProperty.Body = body;
message.Properties[MsmqIntegrationMessageProperty.Name] = integrationProperty;
bodyStream.Seek(0, SeekOrigin.Begin);
message.Headers.To = listener.Uri;
closeMessage = false;
MsmqDiagnostics.TransferFromTransport(message);
}
return message;
}
finally
{
if (closeMessage)
message.Close();
}
}
}
internal TryTransactedReceiveAsyncResult(MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage,
TimeSpan timeout, MsmqTransactionMode transactionMode, AsyncCallback callback, object state)
: base(callback, state)
{
this.timeoutHelper = new TimeoutHelper(timeout);
this.txCurrent = Transaction.Current;
this.receiver = receiver;
this.msmqMessage = msmqMessage;
this.transactionMode = transactionMode;
ActionItem.Schedule(onComplete, this);
}
internal static MsmqQueue CreateMsmqQueue(MsmqReceiveHelper receiver)
{
if (receiver.MsmqReceiveParameters.ReceiveContextSettings.Enabled)
{
if (Msmq.Version < longhornVersion)
{
return new MsmqDefaultLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), UnsafeNativeMethods.MQ_RECEIVE_ACCESS);
}
else
{
return new MsmqSubqueueLockingQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), receiver.ListenUri.Host, UnsafeNativeMethods.MQ_RECEIVE_ACCESS);
}
}
else
{
return new MsmqQueue(receiver.MsmqReceiveParameters.AddressTranslator.UriToFormatName(receiver.ListenUri), UnsafeNativeMethods.MQ_RECEIVE_ACCESS);
}
}
public bool ReceiveContextPoisonHandling(MsmqMessageProperty messageProperty)
{
// The basic idea is to use the message move count to get the number of retry attempts the message has been through
// The computation of the retry count and retry cycle count is slightly involved due to fact that the message being processed
// could have been recycled message. (Recycled message is the message that moves from lock queue to retry queue to main queue
// and back to lock queue
//
// Count to tally message recycling (lock queue to retry queue to main queue adds move count of 2 to the message)
const int retryMoveCount = 2;
// Actual number of times message is received before recycling to retry queue
int actualReceiveRetryCount = this.ReceiveParameters.ReceiveRetryCount + 1;
// The message is recycled these many number of times
int maxRetryCycles = this.ReceiveParameters.MaxRetryCycles;
// Max change in message move count between recycling
int maxMovePerCycle = (2 * actualReceiveRetryCount) + 1;
// Number of recycles the message has been through
int messageCyclesCompleted = messageProperty.MoveCount / (maxMovePerCycle + retryMoveCount);
// Total number of moves on the message at the end of the last recycle
int messageMoveCountForCyclesCompleted = messageCyclesCompleted * (maxMovePerCycle + retryMoveCount);
// The differential move count for the current cycle
int messageMoveCountForCurrentCycle = messageProperty.MoveCount - messageMoveCountForCyclesCompleted;
lock (this)
{
if (this.disposed)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(this.GetType().ToString()));
}
// Check if the message has already completed its max recycle count (MaxRetryCycles)
// and the disposed the message first. Such a message was previously disposed using the ReceiveErrorHandling method
// and the channel/listener would immediately fault
//
if (messageCyclesCompleted > maxRetryCycles)
{
FinalDisposition(messageProperty);
return(true);
}
// Check if the message is eligible for recycling/disposition
if (messageMoveCountForCurrentCycle >= maxMovePerCycle)
{
if (TD.ReceiveRetryCountReachedIsEnabled())
{
TD.ReceiveRetryCountReached(messageProperty.MessageId);
}
if (messageCyclesCompleted < maxRetryCycles)
{
// The message is eligible for recycling, move the message the message to retry queue
MsmqReceiveHelper.MoveReceivedMessage(this.lockQueueForReceive, this.retryQueueForMove, messageProperty.LookupId);
MsmqDiagnostics.PoisonMessageMoved(messageProperty.MessageId, false, this.receiver.InstanceId);
}
else
{
if (TD.MaxRetryCyclesExceededMsmqIsEnabled())
{
TD.MaxRetryCyclesExceededMsmq(messageProperty.MessageId);
}
// Dispose the message using ReceiveErrorHandling
FinalDisposition(messageProperty);
}
return(true);
}
else
{
return(false);
}
}
}
internal Msmq3PoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
this.trackedMessages = new SortedList <long, int>(maxTrackedMessages);
}
public Msmq4SubqueuePoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
}
internal static Message DecodeIntegrationDatagram(MsmqIntegrationChannelListener listener, MsmqReceiveHelper receiver, MsmqIntegrationInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
Message message2;
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
Message message = Message.CreateMessage(MessageVersion.None, (string)null);
bool flag = true;
try
{
SecurityMessageProperty property = listener.ValidateSecurity(msmqMessage);
if (property != null)
{
message.Properties.Security = property;
}
MsmqIntegrationMessageProperty property2 = new MsmqIntegrationMessageProperty();
msmqMessage.SetMessageProperties(property2);
int length = msmqMessage.BodyLength.Value;
if (length > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
byte[] bufferCopy = msmqMessage.Body.GetBufferCopy(length);
MemoryStream bodyStream = new MemoryStream(bufferCopy, 0, bufferCopy.Length, false);
object obj2 = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
obj2 = DeserializeForIntegration(listener, bodyStream, property2, messageProperty.LookupId);
}
catch (SerializationException exception)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqDeserializationError"), exception));
}
property2.Body = obj2;
message.Properties["MsmqIntegrationMessageProperty"] = property2;
bodyStream.Seek(0L, SeekOrigin.Begin);
message.Headers.To = listener.Uri;
flag = false;
MsmqDiagnostics.TransferFromTransport(message);
}
message2 = message;
}
finally
{
if (flag)
{
message.Close();
}
}
}
return(message2);
}
internal Msmq3PoisonHandler(MsmqReceiveHelper receiver)
{
this.receiver = receiver;
this.trackedMessages = new SortedList<long, int>(0x100);
}
internal static Message DecodeTransportDatagram(MsmqInputChannelListener listener, MsmqReceiveHelper receiver, MsmqInputMessage msmqMessage, MsmqMessageProperty messageProperty)
{
Message message2;
using (MsmqDiagnostics.BoundReceiveBytesOperation())
{
long num1 = msmqMessage.LookupId.Value;
int size = msmqMessage.BodyLength.Value;
int offset = 0;
byte[] incoming = msmqMessage.Body.Buffer;
ServerModeDecoder modeDecoder = new ServerModeDecoder();
try
{
ReadServerMode(listener, modeDecoder, incoming, messageProperty.LookupId, ref offset, ref size);
}
catch (ProtocolException exception)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception);
}
if (modeDecoder.Mode != FramingMode.SingletonSized)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadFrame")));
}
ServerSingletonSizedDecoder decoder2 = new ServerSingletonSizedDecoder(0L, 0x800, 0x100);
try
{
do
{
if (size <= 0)
{
throw listener.NormalizePoisonException(messageProperty.LookupId, decoder2.CreatePrematureEOFException());
}
int num3 = decoder2.Decode(incoming, offset, size);
offset += num3;
size -= num3;
}while (decoder2.CurrentState != ServerSingletonSizedDecoder.State.Start);
}
catch (ProtocolException exception2)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception2);
}
if (size > listener.MaxReceivedMessageSize)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(listener.MaxReceivedMessageSize));
}
if (!listener.MessageEncoderFactory.Encoder.IsContentTypeSupported(decoder2.ContentType))
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadContentType")));
}
byte[] dst = listener.BufferManager.TakeBuffer(size);
Buffer.BlockCopy(incoming, offset, dst, 0, size);
Message message = null;
using (MsmqDiagnostics.BoundDecodeOperation())
{
try
{
message = listener.MessageEncoderFactory.Encoder.ReadMessage(new ArraySegment <byte>(dst, 0, size), listener.BufferManager);
}
catch (XmlException exception3)
{
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, new ProtocolException(System.ServiceModel.SR.GetString("MsmqBadXml"), exception3));
}
bool flag = true;
try
{
SecurityMessageProperty property = listener.ValidateSecurity(msmqMessage);
if (property != null)
{
message.Properties.Security = property;
}
flag = false;
MsmqDiagnostics.TransferFromTransport(message);
message2 = message;
}
catch (Exception exception4)
{
if (Fx.IsFatal(exception4))
{
throw;
}
receiver.FinalDisposition(messageProperty);
throw listener.NormalizePoisonException(messageProperty.LookupId, exception4);
}
finally
{
if (flag)
{
message.Close();
}
}
}
}
return(message2);
}