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A simple, cross-platform demo (VCL + FMX) showing how to Super Fast LAN tethering in IPv4 network Automatically discover a server on the same LAN using UDP Broadcast with Indy components. 📌 Overview This project demonstrates a lightweight, zero-configuration **auto-discovery mechanism**: - The **Server** listens on a known UDP port (`3434`) for broadcast packets. - A **Client** (VCL or FMX/Android) sends a broadcast message (`Discovery|Hello...`) on port `3434`. - The **Server replies** directly to the client (on port `22049`) with its LAN IP address. - The **Client receives the reply**, extracts the server’s IP, and can then connect via TCP or continue communication. This makes it possible to build applications that can **find each other on the same LAN instantly** without manual IP setup. 🏗 Components Used - Indy UDP Components - TIdUDPServer. - TIdUDPClient. 2. - Cross-platform IP detection - Windows: `GetAdaptersAddresses` API - Android: `Java.Net.NetworkInterface` enumeration 3. - Thread-safe logging via `TThread.Queue`. 4. - Timer to control discovery message sending Loop All details has been added in my Github Repo here. Mit Licence: Please feel free to fork and improve & use it on your projects... Any remarks or suggestions are very wellcome here. -- thank you All.