FREE CODE APPS
Full Delphi source code to a simple Chat application. The example Chat program demonstrates how UDP broadcast can be used to find partners with unknown IP addresses in the network. While the "chat" application is a good candidate to use the "streaming" structure of TCP, here a UDP implementation is done. Provided the "connectionless" ways of UDP, multiple partners can send to a single network device.
Read the full article to learn how to create a Chat application with Delphi