PeerCastStation.PCP.PCPYellowPageClient.ReadResponse C# (CSharp) Method

    private string ReadResponse(Stream s)
    {
      var res = new List<byte>();
      do {
        int b = s.ReadByte();
        if (b>=0) res.Add((byte)b);
        else {
          return null;
        }
      } while (
        res.Count<4 ||
        res[res.Count-4]!='\r' ||
        res[res.Count-3]!='\n' ||
        res[res.Count-2]!='\r' ||
        res[res.Count-1]!='\n');
      return System.Text.Encoding.UTF8.GetString(res.ToArray());
    }