Hello File_girl71, Hello Arne_bab,

Thanks a lot for your help, I really apreciate.

I download Paranoia and I will install and test it.

For the moment I modified the handshake of my code to use "GNUTELLA PCONNECT" + " " + networkName and it works well with Phex (I checked the source code of phex, and I still have a lot of work to understant a litel bit more:-))
I can connect now to a Phex ultrapeer and found some bugs in my code (I still have much work ahead me :-)))

File_girl71, I saw that you post a message about Gnucleus 2.2.0.0. I donwload and install Gnucleus. Have you the sources of this program, it is to see how it's implemented.

Regards
Juan