/// <summary>
/// Writes a byte array to this stream with compression provided by <see cref="GZipStream"/>. You may write an empty array or a <c>null</c> reference.
/// </summary>
/// <param name="stream">The stream to write.</param>
/// <param name="array">The byte array to write.</param>
/// <param name="validityCheck">Indicates whether to write a check code before the byte array. This check code will help detect corrupted data.</param>
/// <returns>The number of bytes actually written to the stream.</returns>
public static int WriteCompressedByteArray(this Stream stream, byte[] array, bool validityCheck = false)
{
using (var ms = new MemoryStream())
{
using (var gs = new GZipStream(ms, CompressionLevel.Optimal))
{
gs.WriteByteArray(array, validityCheck);
gs.Flush(); //! must flush
}
return(stream.WriteByteArray(ms.ToArray())); //! ! You have to write the bytes after closing the gzip stream
}
}