Book Image

Fearless Cross-Platform Development with Delphi

By : David Cornelius
Book Image

Fearless Cross-Platform Development with Delphi

By: David Cornelius

Overview of this book

Delphi is a strongly typed, event-driven programming language with a rich ecosystem of frameworks and support tools. It comes with an extensive set of web and database libraries for rapid application development on desktop, mobile, and internet-enabled devices. This book will help you keep up with the latest IDE features and provide a sound foundation of project management and recent language enhancements to take your productivity to the next level. You’ll discover how simple it is to support popular mobile device features such as sensors, cameras, and GPS. The book will help you feel comfortable working with FireMonkey and styles and incorporating 3D user interfaces in new ways. As you advance, you’ll be able to build cross-platform solutions that not only look native but also take advantage of a wide array of device capabilities. You’ll also learn how to use embedded databases, such as SQLite and InterBase ToGo, synchronizing them with your own custom backend servers or modules using the powerful RAD Server engine. The book concludes by sharing tips for testing and deploying your end-to-end application suite for a smooth user experience. By the end of this book, you’ll be able to deliver modern enterprise applications using Delphi confidently.
Table of Contents (22 chapters)
1
Section 1: Programming Power
5
Section 2: Cross-Platform Power
11
Section 3: Mobile Power
15
Section 4: Server Power

Logging activity

In this chapter, our focus is on building robust server applications that run in the background without human intervention, providing services to clients. In a similar way to the beacons and IoT devices we learned about in Chapter 11, Extending Delphi with Bluetooth, IoT, and Raspberry Pi, addresses and data formats must be agreed upon by both the client and server for there to be useful communication. However, one big conceptual difference is that IoT devices don't wait for clients to request data; instead, they just continually spew forth information, including the services they provide and what format to use, over Bluetooth for anyone close enough to pick it up. The servers we're building in this chapter listen for specific requests on a specific port and then respond. This requires a little more coordination to get right because there's no advertisement mode for the service that is provided.

Because of the "silent waiting" mode that...