/// <summary>Clean direct buffer pool</summary>
private void CleanBufferPool()
{
ByteBuffer buf;
while ((buf = bufferPool.Poll()) != null)
{
CryptoStreamUtils.FreeDB(buf);
}
}
/// <summary>Forcibly free the direct buffers.</summary>
private void FreeBuffers()
{
CryptoStreamUtils.FreeDB(inBuffer);
CryptoStreamUtils.FreeDB(outBuffer);
CleanBufferPool();
}