Hello, I would like to send compressed data between my C# to a C++ application in ZLIB format. In C++, I use the iostreams::zlib_compressor/zlib_decompressor. In C# I am currently using the ZOutputStream available in the zlib.NET library. First of all, when I compress the same data using both libraries, the results look different: 1.boost::iostreams::zlib_compressor: FF 13 49 48 00 00 01 00 01 00 00 00 63 61 60 60 F8 00 C4 C1 25 45 99 79 E9 23 87 04 00 2.zlib.NET (zlib.ZOutputStream): FF 13 49 48 00 00 01 00 01 00 00 00 78 9C 63 61 60 60 F8 00 C4 C1 25 45 99 79 E9 23 87 04 00 4F 31 63 8D (Note the 78 9C pattern that is present in zlib.NET, but not in boost). Furthermore, when I decompress data in zlib_decompressor that I compressed in zlib.NET, I am not able to read from the stream suggesting something is wrong. It does work when I try to decompress data compressed in the zlib_compressor. Does anybody know what is behind this incompatibility and whether there is an easy solution? Thank you, Johan _________________________________________________________________ http://clk.atdmt.com/UKM/go/197222280/direct/01/ We want to hear all your funny, exciting and crazy Hotmail stories. Tell us now