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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
class MsmqInputMessage : NativeMsmqMessage
{
BufferProperty senderId;
IntProperty senderIdLength;
LongProperty lookupId;
IntProperty abortCount;
IntProperty moveCount;
BufferProperty senderCertificate;
IntProperty senderCertificateLength;
IntProperty lastMovedTime;
BufferProperty body;
IntProperty bodyLength;
BufferProperty messageId;
ShortProperty cls;
int maxBufferSize;
const int maxSize = 4 * 1024 * 1024;
const int initialBodySize = 4096;
const int initialSenderIdSize = 256;
const int initialCertificateSize = 4096;
public MsmqInputMessage()
: this(0, maxSize)
{
}
public MsmqInputMessage(int maxBufferSize)
: this(0, maxBufferSize)
{
}
protected MsmqInputMessage(int additionalPropertyCount, int maxBufferSize)
: this(additionalPropertyCount, new SizeQuota(maxBufferSize))
{
}
protected MsmqInputMessage(int additionalPropertyCount, SizeQuota bufferSizeQuota)
: base(12 + additionalPropertyCount)
{
this.maxBufferSize = bufferSizeQuota.MaxSize;
this.body = new BufferProperty(this, UnsafeNativeMethods.PROPID_M_BODY,
bufferSizeQuota.AllocIfAvailable(initialBodySize));
this.bodyLength = new IntProperty(this, UnsafeNativeMethods.PROPID_M_BODY_SIZE);
this.messageId = new BufferProperty(this, UnsafeNativeMethods.PROPID_M_MSGID,
UnsafeNativeMethods.PROPID_M_MSGID_SIZE);
this.lookupId = new LongProperty(this, UnsafeNativeMethods.PROPID_M_LOOKUPID);
this.cls = new ShortProperty(this, UnsafeNativeMethods.PROPID_M_CLASS);
this.senderId = new BufferProperty(this, UnsafeNativeMethods.PROPID_M_SENDERID, initialSenderIdSize);
this.senderIdLength = new IntProperty(this, UnsafeNativeMethods.PROPID_M_SENDERID_LEN);
this.senderCertificate = new BufferProperty(this, UnsafeNativeMethods.PROPID_M_SENDER_CERT,
bufferSizeQuota.AllocIfAvailable(initialCertificateSize));
this.senderCertificateLength = new IntProperty(this, UnsafeNativeMethods.PROPID_M_SENDER_CERT_LEN);
if (Msmq.IsAdvancedPoisonHandlingSupported)
{
this.lastMovedTime = new IntProperty(this, UnsafeNativeMethods.PROPID_M_LAST_MOVE_TIME);
this.abortCount = new IntProperty(this, UnsafeNativeMethods.PROPID_M_ABORT_COUNT);
this.moveCount = new IntProperty(this, UnsafeNativeMethods.PROPID_M_MOVE_COUNT);
}
}
public override void GrowBuffers()
{
OnGrowBuffers(new SizeQuota(this.maxBufferSize));
}
protected virtual void OnGrowBuffers(SizeQuota bufferSizeQuota)
{
bufferSizeQuota.Alloc(this.senderIdLength.Value);
this.senderId.EnsureBufferLength(this.senderIdLength.Value);
bufferSizeQuota.Alloc(this.senderCertificateLength.Value);
this.senderCertificate.EnsureBufferLength(this.senderCertificateLength.Value);
bufferSizeQuota.Alloc(this.bodyLength.Value);
this.body.EnsureBufferLength(this.bodyLength.Value);
}
public BufferProperty SenderId
{
get { return this.senderId; }
}
public IntProperty SenderIdLength
{
get { return this.senderIdLength; }
}
public LongProperty LookupId
{
get { return this.lookupId; }
}
public IntProperty AbortCount
{
get { return this.abortCount; }
}
public IntProperty MoveCount
{
get { return this.moveCount; }
}
public BufferProperty SenderCertificate
{
get { return this.senderCertificate; }
}
public IntProperty SenderCertificateLength
{
get { return this.senderCertificateLength; }
}
public IntProperty LastMovedTime
{
get { return this.lastMovedTime; }
}
public BufferProperty Body
{
get { return this.body; }
}
public IntProperty BodyLength
{
get { return this.bodyLength; }
}
public BufferProperty MessageId
{
get { return this.messageId; }
}
public ShortProperty Class
{
get { return this.cls; }
}
protected class SizeQuota
{
int remainingSize;
int maxSize;
public SizeQuota(int maxSize)
{
this.maxSize = maxSize;
this.remainingSize = maxSize;
}
public int MaxSize
{
get { return this.maxSize; }
}
public void Alloc(int requiredSize)
{
if (requiredSize > this.remainingSize)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(MaxMessageSizeStream.CreateMaxReceivedMessageSizeExceededException(this.maxSize));
}
this.remainingSize -= requiredSize;
}
public int AllocIfAvailable(int desiredSize)
{
int availableSize = Math.Min(desiredSize, this.remainingSize);
this.remainingSize -= availableSize;
return availableSize;
}
}
}
}
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