generate UDP or IP broadcast

Hi

I have a Nios on my CycloneVGT running with the Altera TSE and the SimpleSocketServer. But it don't work properly since took the FIFOs external in the TSE.

I would like to have a constant stream of some well-defined packets, which are sent from the nios. This way I can look all the different steps in my system where it gets failed...

How can I generate some packets?

I found the function "ip_write" which seems to fit exactly my problem. But how do I generate a packet? I'm not very used to C++...