/// <summary>
/// Writes an Int32 value type content and returns its location for possible further update.
/// </summary>
/// <param name="number">Int32 value to write.</param>
/// <param name="chunk">Chunk the value was stored at.</param>
/// <param name="position">Chunk location where the value was saved.</param>
public void WriteInt32AndRememberItsLocation(int number, out byte[] chunk, out int position)
{
if (this._disposed)
{
throw new ObjectDisposedException("GenuineChunkedStream");
}
if (this._currentWriteBlock == null || this._writePosition >= this._currentWriteBlock.Length - 4)
{
this.ObtainNextBuffer();
}
// set returned values
chunk = this._currentWriteBlock;
position = this._writePosition;
// write the value
MessageCoder.WriteInt32(this._currentWriteBlock, this._writePosition, number);
// and advance the pointer
this._writePosition += 4;
this._chunksAndStreams[this._chunksAndStreams.Count - 1] = this._writePosition;
if (this._length >= 0)
{
this._length += 4;
}
}
/// <summary>
/// Fills in the provided stream with the specified messages that the total size as close to the recommended size as possible.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="messageContainer">Accumulated messages or a null reference.</param>
/// <param name="packedMessages">This instance will contain all packed messages after this function completes.</param>
/// <param name="resultContent">The filled stream.</param>
/// <param name="intermediateBuffer">The intermediate buffer.</param>
/// <param name="recommendedSize">The recommended size.</param>
public static void FillInLabelledStream(Message message, MessageContainer messageContainer, ArrayList packedMessages, GenuineChunkedStream resultContent, byte[] intermediateBuffer, int recommendedSize)
{
BinaryWriter binaryWriter = new BinaryWriter(resultContent);
if (packedMessages != null)
{
packedMessages.Clear();
}
while (message != null)
{
// not finished yet
binaryWriter.Write((byte)0);
if (packedMessages != null)
{
packedMessages.Add(message);
}
MessageCoder.WriteLabelledStream(message.SerializedContent, resultContent, binaryWriter, intermediateBuffer);
message = null;
if (resultContent.Length > recommendedSize)
{
break;
}
if (messageContainer != null)
{
message = messageContainer.GetMessage();
}
if (message == null)
{
break;
}
}
// "finish" flag
binaryWriter.Write((byte)1);
}
/// <summary>
/// Synchronously reads the next network packet if it is available.
/// </summary>
private void ReadNextPortion()
{
int bytesRead = 0;
int lengthToRead = 0;
// try to read the remaining part of the packet
if (this._currentPacketBytesRead < this._currentPacketSize)
{
// read the next part of the packet
lengthToRead = Math.Min(this._currentPacketSize - this._currentPacketBytesRead, this._readBuffer.Length);
this._validLength = this._underlyingStream.Read(this._readBuffer, 0, lengthToRead);
if (this._validLength == 0)
{
throw GenuineExceptions.Get_Receive_Portion();
}
this.ITransportContext.ConnectionManager.IncreaseBytesReceived(this._validLength);
this._currentPacketBytesRead += this._validLength;
this._currentPosition = 0;
return;
}
// the underlying stream ends
if (this._messageRead)
{
return;
}
// prepare for reading a header
lengthToRead = MessageCoder.LABEL_HEADER_SIZE;
this._currentPosition = 0;
// read the header
while (this._currentPosition < lengthToRead)
{
bytesRead = this._underlyingStream.Read(this._readBuffer, this._currentPosition, lengthToRead - this._currentPosition);
if (bytesRead == 0)
{
throw GenuineExceptions.Get_Receive_Portion();
}
this.ITransportContext.ConnectionManager.IncreaseBytesReceived(bytesRead);
this._currentPosition += bytesRead;
}
// parse the header
if (this._readBuffer[0] != MessageCoder.COMMAND_MAGIC_CODE)
{
throw GenuineExceptions.Get_Receive_IncorrectData();
}
this._currentPacketSize = MessageCoder.ReadInt32(this._readBuffer, 1);
this._messageRead = this._readBuffer[5] != 0;
this._currentPacketBytesRead = 0;
// and read the part of the packet
if (this._currentPacketBytesRead < this._currentPacketSize)
{
// read the next part of the packet
lengthToRead = Math.Min(this._currentPacketSize - this._currentPacketBytesRead, this._readBuffer.Length);
// GenuineUtility.ReadDataFromStream(this._underlyingStream, this._readBuffer, 0, lengthToRead);
// this._validLength = lengthToRead;
this._validLength = this._underlyingStream.Read(this._readBuffer, 0, lengthToRead);
if (this._validLength == 0)
{
throw GenuineExceptions.Get_Receive_Portion();
}
this.ITransportContext.ConnectionManager.IncreaseBytesReceived(this._validLength);
this._currentPacketBytesRead += this._validLength;
this._currentPosition = 0;
}
}
/// <summary>
/// Updates the difference of the length property.
/// </summary>
public void Dispose()
{
MessageCoder.WriteInt32(this._chunk, this._position, (int)(this._outputStream.Length - this._initialLength));
}
