, which can handle thousands of concurrent UDP/TCP connections. Simplicity of Implementation : Sending data is often a single line of code (e.g., IdUDPClient1.SendBuffer(Host, Port, Buffer)
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.
– do heavy processing in a separate thread. delphi udp
array and including the sender's IP and port, making it highly efficient for real-time responsiveness. Lightweight, Connectionless Communication
The most common way to work with UDP in modern Delphi (Delphi 7 through Delphi 11/12 Alexandria) is using components. Indy ships with Delphi and provides a consistent, non-blocking architecture. , which can handle thousands of concurrent UDP/TCP
User Datagram Protocol (UDP) is a connectionless, lightweight transport layer protocol. Unlike TCP, UDP does not guarantee delivery, order, or error checking beyond the basic checksum. However, this simplicity makes it exceptionally fast and efficient for scenarios where speed outweighs reliability, such as real-time video streaming, online gaming, DNS queries, and local network discovery.
Remember the golden rule: . Choose wisely based on your application’s requirements. If you need the speed of UDP but cannot tolerate packet loss, consider layering your own acknowledgment mechanism or using a hybrid approach. array and including the sender's IP and port,
For high-performance loops, it is better to reuse a single TIdUDPClient instance rather than creating and destroying it for every packet. Building a Robust UDP Server
type TUDPReceiver = class private FSocket: TUdpSocket; procedure OnDataAvailable(const AData: TBytes; AEndpoint: TEndpoint); public procedure StartListening(APort: Integer); end;