loss in udp

I need to send some data over UDP (cant use TCP), and i want to make sure that the data gets there. I thought that sending som data to the other host, and then that host sends a reply back saying HEY I GOT IT, but then theres a chance that HEY I GOT IT is dropped too..

is there any way i can make sure that the receiver gets it??

>>14
I would like to keep things simple, as the idea is that I would like my data to be available to scripting languages with basic socket libraries. Would there be any advantages of using named shared memory over local sockets?