Track copy/ paste operation using clipboard in ubuntu

I want to track copy/ paste operation using clipboard. I want to know what are the source and destination of data. For this I tried to run the code on this link: http://ift.tt/1M1VElT

I kept getting this error: connect: Connection refused

BTW to run the code I used: Ubuntu 12.4 . gcc 4.6.3

To be honest I don't understand the code very well, so I couldn't fix this problem. I'd be grateful for any comment. Thanks in advance .