Binary Post Reverse-Echo Test

This test application is supposed to do a http POST, with all bytes in reverse order as the body of the request, to your localhost's port 12345.

1. start listening with ncat -l 12345 (or netcat -l 12345)
2. save allbytes.dat to your harddisk (the file has all bytes in order)
3. drag the file from your disk to the blue box below
   
4. click
5. look at ncat output to experience some http headers followed by all bytes in reverse order