/// <summary>
/// Writes X Protocol frames to the X Plugin.
/// </summary>
/// <param name="id">The integer representation of the client message identifier used for the message.</param>
/// <param name="message">The message to include in the X Protocol frame.</param>
public void Write(int id, IMessage message)
{
var messageSize = message.CalculateSize();
if (CompressionController != null &&
CompressionController.IsCompressionEnabled &&
messageSize > XCompressionController.COMPRESSION_THRESHOLD &&
CompressionController.ClientSupportedCompressedMessages.Contains((ClientMessageId)id)
)
{
// Build the compression protobuf message.
var messageHeader = new byte[5];
var messageBytes = message.ToByteArray();
byte[] payload = new byte[messageHeader.Length + messageBytes.Length];
var sizeArray = BitConverter.GetBytes(messageSize + 1);
Buffer.BlockCopy(sizeArray, 0, messageHeader, 0, sizeArray.Length);
messageHeader[4] = (byte)id;
Buffer.BlockCopy(messageHeader, 0, payload, 0, messageHeader.Length);
Buffer.BlockCopy(messageBytes, 0, payload, messageHeader.Length, messageBytes.Length);
var compression = new Compression();
compression.UncompressedSize = (ulong)(messageSize + messageHeader.Length);
compression.ClientMessages = (ClientMessages.Types.Type)id;
compression.Payload = ByteString.CopyFrom(CompressionController.Compress(payload));
// Build the X Protocol frame.
_stream.Write(BitConverter.GetBytes(compression.CalculateSize() + 1), 0, 4);
_stream.WriteByte((byte)(ClientMessageId.COMPRESSION));
if (messageSize > 0)
{
compression.WriteTo(_stream);
}
}
else
{
_stream.Write(BitConverter.GetBytes(messageSize + 1), 0, 4);
_stream.WriteByte((byte)id);
if (messageSize > 0)
{
message.WriteTo(_stream);
}
}
_stream.Flush();
}