Udp — Delphi

type TUDPPacketHeader = packed record SequenceID: UInt32; PacketType: Byte; // 0 = data, 1 = ack, 2 = heartbeat Timestamp: TDateTime; end; Delphi provides robust support for UDP through both the legacy Indy components and the modern System.Net.Socket unit. Indy is ideal for rapid development and VCL applications, while System.Net.Socket offers better cross-platform compatibility and modern async patterns. Choose UDP when speed, simplicity, and broadcast capability are essential, but always implement application-level reliability when data integrity matters.

procedure SendUDPBytes(const AHost: string; APort: Integer; const Bytes: TBytes); var UDPClient: TIdUDPClient; begin UDPClient := TIdUDPClient.Create(nil); try UDPClient.Host := AHost; UDPClient.Port := APort; UDPClient.Send(TIdBytes(Bytes)); finally UDPClient.Free; end; end; The server component operates asynchronously using the OnUDPRead event. delphi udp

For production code, consider using a higher-level abstraction or message queue, but for many real-time and discovery scenarios, UDP in Delphi is both efficient and elegant. procedure SendUDPBytes(const AHost: string