GZIP compressed HTTP content

GzipContent.cs

using System.IO;
using System.IO.Compression;
using System.Net.Http;
using System.Text;

namespace System.Net.Http
{
    public class GzipContent : ByteArrayContent
    {
        public GzipContent(string content, Encoding encoding, string mediaType)
            : base(Compress(content, encoding))
        {
            this.Headers.Add("Content-Type", mediaType);
            this.Headers.Add("Content-Encoding", "gzip");
        }

        private static byte[] Compress(string content, Encoding encoding)
        {
            using (var compressedStream = new MemoryStream())
            {
                using (var contentStream = new MemoryStream(encoding.GetBytes(content)))
                using (var gzipStream = new GZipStream(compressedStream, CompressionMode.Compress))
                {
                    contentStream.CopyTo(gzipStream);
                }

                return compressedStream.ToArray();
            }
        }
    }
}