Overview I am working on a client-server application. The client is written in C

Question

Overview
I am working on a client-server application. The client is written in C++ (working on Windows, planning to support Linux) and the server is a .NET RESTful service. I need to HTTP POST some data to the server. The data is a unicode string that I need to compress using any fast compression algorithm (needs to be light on CPU). On the server I need to decompress raw bytes and get a string.

Problem
I cannot decompress raw bytes and I end up with decompressor's output buffers stay intact.

I tried
I have tried using Google Snappy, there is only a C/C++ version and any .NET ports don't appear to be finished. I also checked LZ4, where compression/decompression works in a single language, but when I try to use both - I cannot decompress data correctly (the decompressed bytes are set to 0s).

Question
Has anyone tried using a fast C/C++ compression and C# decompression? Any recommendations?

Explanation / Answer

If anybody interested I ended up using gzip from zlib. Never figured out why LZ4 doesn't work, as suggested in the comments this could be an endianess problem or a 64/32-bit mismatch. However, I tested this on a single machine compressing and decompressing a local file. The same compilation settings worked for gzip.

C/C++ sample compressor code

int compress_one_file(char *infilename, char *outfilename)
{
FILE *infile = fopen(infilename, "rb");
gzFile outfile = gzopen(outfilename, "wb");
if (!infile || !outfile) return -1;

char inbuffer[128];
int num_read = 0;
unsigned long total_read = 0, total_wrote = 0;
while ((num_read = fread(inbuffer, 1, sizeof(inbuffer), infile)) > 0) {
total_read += num_read;
gzwrite(outfile, inbuffer, num_read);
}
fclose(infile);
gzclose(outfile);
}
C# sample decompressor code

public static void Decompress(FileInfo fileToDecompress)
{
using (FileStream originalFileStream = fileToDecompress.OpenRead())
{
string currentFileName = fileToDecompress.FullName;
string newFileName = currentFileName + ".decompressed";

using (FileStream decompressedFileStream = File.Create(newFileName))
{
using (GZipStream decompressionStream =
new GZipStream(originalFileStream, CompressionMode.Decompress))
{
decompressionStream.CopyTo(decompressedFileStream);
}
}
}
}

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