gzipstuff.cs

    internal class Program
    {
        private static void Main(string[] args)
        {
            var s = new Mock<Stream>();
            s.SetupGet(x => x.CanWrite).Returns(true);
            s.Setup(x => x.Write(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>()))
                .Callback((byte[] buf, int ofs, int cnt) => Console.WriteLine(
                    $"under : len: {cnt} content:" + Environment.NewLine + ByteBufferUtil.PrettyHexDump(Unpooled
                        .WrappedBuffer(buf, ofs, cnt).Slice(0, Math.Min(cnt, 10)))));
            var cs = new GZipStream(s.Object, CompressionMode.Compress, false);
            var bs = Encoding.UTF8.GetBytes("Hello, World");
            cs.Write(bs, 0, bs.Length);

            var rnd = new Random(Environment.TickCount);
            bs = new byte[80 * 1024];
            rnd.NextBytes(bs);
            cs.Write(bs, 0, bs.Length);
            Console.WriteLine("closing now");
            cs.Close();
        }
    }