todo

开源的组播程序

Performance:
   pmtp.c / encode_segment -> optimize so that a temp buffer is not required
Functionality: 
- Port to C#, Visual Studio.Net, Windows XP/2003
- Add IGMPv3 support
- define API & throw code around so that it can be used as library
- Fix Makefiles
- Add support for large block codec LDPC/LDGM
	http://www.inrialpes.fr/planete/people/roca/mcl/ldpc_infos.html