Book Image

Delphi Cookbook, - Third Edition

By : Daniele Spinetti, Daniele Teti
Book Image

Delphi Cookbook, - Third Edition

By: Daniele Spinetti, Daniele Teti

Overview of this book

Delphi is a cross-platform integrated development environment (IDE) that supports rapid application development on different platforms, saving you the pain of wandering amid GUI widget details or having to tackle inter-platform incompatibilities. Delphi Cookbook begins with the basics of Delphi and gets you acquainted with JSON format strings, XSLT transformations, Unicode encodings, and various types of streams. You’ll then move on to more advanced topics such as developing higher-order functions and using enumerators and run-time type information (RTTI). As you make your way through the chapters, you’ll understand Delphi RTL functions, use FireMonkey in a VCL application, and cover topics such as multithreading, using aparallel programming library and deploying Delphi on a server. You’ll take a look at the new feature of WebBroker Apache modules, join the mobile revolution with FireMonkey, and learn to build data-driven mobile user interfaces using the FireDAC database access framework. This book will also show you how to integrate your apps with Internet of Things (IoT). By the end of the book, you will have become proficient in Delphi by exploring its different aspects such as building cross-platforms and mobile applications, designing server-side programs, and integrating these programs with IoT.
Table of Contents (12 chapters)

Using native HTTP(S) client libraries

The RTL provides two components that you can use to send HTTP requests to servers and handle their responses:

  • TNetHTTPClient
  • TNetHTTPRequest

Alternatively, as we saw in Chapter 3, Knowing Your Friends The Delphi RTL, you can use an instance of THTTPClient to manage your HTTP requests.

Why use these components instead of good old TidHTTP from the INDY suite? The reasons have been explained in Chapter 3, Knowing Your Friends – The Delphi RTL, in the Delphi RTL section. However, in this recipe we'll use the new HTTP client to show how much of the deployment is simplified, also in mobile apps, using these new components instead of the INDY ones, at least for HTTP communications.

Long story short, Embarcadero developed a native HTTP client library that is not based on INDY or OpenSSL, but that relies on the OS API to implement...