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)

Sending a POST HTTP request for encoding parameters

HTTP protocol supports some types of verbs. A verb is a way to ask a remote server something. Some of these verbs are GET, POST, PUT, DELETE, HEAD, PATCH, TRACE, and OPTIONS. For a detailed description of HTTP protocol, you can read the related RFCs at the following URLs:

  • RFC7230, about HTTP/1.1 protocol: https://tools.ietf.org/html/rfc7230
  • A specific section about the available verbs in the HTTP/1.1 protocol: https://tools.ietf.org/html/rfc7231#section-4

When you write a URL in the browser address bar and hit Return, you are issuing a GET request to the remote HTTP server. However, when you have to send form data to the server, usually, the HTML form uses the POST method. POST is designed to allow a uniform method of sending a block of data, such as the result of submitting a form to a data handling process or to post a message...