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Energize your Web applications with the OutgoingMessage Class

In today’s digital world, a smooth and intuitive user experience is key to any web application’s success. A critical part of this experience is providing users with easy access to various resources—whether documents, images, or other data types. To make this possible, your server must manage and deliver different content formats efficiently.

With 4D’s new REST server feature, managing diverse content delivery is now easier than ever. Previously, the REST server could only return scalar, entity, or entity selection data. Now, it can deliver full web content directly—content ready for a browser to handle.

Downloading files or receiving binary data from the REST server is now straightforward, thanks to the new OutgoingMessage class. With it, you can easily customize responses to suit your needs.

Read on to explore how the OutgoingMessage class can enhance your application!

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Nicolas Brachfogel
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Managing HTTP Requests with HTTP Agents

In 4D 19 R6, we introduced HTTP classes to modernize syntax and enhance functionalities for our HTTP client commands. Building on this foundation, 4D 20 R6 brings a powerful new feature: HTTP agents. These agents empower developers to customize and optimize their connections to HTTP servers by managing connection persistence and reuse for HTTP requests.

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Vanessa Talbot
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Create, Update, and Delete with Data Explorer

The Data Explorer is a powerful tool for visualizing data. Its capabilities allow administrators to effortlessly ensure data consistency. At the same time, developers can validate their code for creating, updating, or deleting data – all without the need to craft new forms.

Now, with 4D 20 R4, users have the ability not only to visualize but also to correct their data directly within the interface of the Data Explorer. That’s right! You can add, modify, or delete data directly in the Data Explorer interface.

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Fabrice Mainguené
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Debug on the server with scalable web sessions

Scalable web sessions were a significant improvement brought by 4D v18 R6. They allow you to use 4D tags, 4D actions, and REST API in preemptive processes, even in interpreted mode, on a 4D server. However, to debug such programs, you needed to open your development environment on the server to make it switch to cooperative mode, as the debugger window cannot be opened with preemptive processes. This way, until v19 R2, you could debug REST, 4D actions, or 4D tags. From v19 R3, all of this has become much easier, and you can debug on the server-side simply by attaching the debugger to it, as usual.

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Mourad Aouinat
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4D REST API + ReactJS

by Mourad Aouinat, Software Engineer at 4D Morocco

In a previous blog post, we saw how easy setting up a REST API using 4D. In this blog post, we will leverage the powerful 4D REST API in combination with React to build a To-Do app that includes features to open todos, create new ones, modify existing ones, and features for bulk modification and bulk deletion.

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Get ready for the new SameSite and Secure attributes for cookies

Cookies’ abilities have grown and evolved over the years, but they have left some legacy issues. To handle this, browsers (including Safari, Chrome, Firefox, and Edge) are changing their behavior regarding the SameSite and Secure attributes for a secure-by-default model for cookies.

As a 4D web developer, you may be concerned about the 4D web sessions session cookie if you want to prevent your application from Cross-site request forgery.

To prevent your web session cookie from circulating on the web pointlessly or being misunderstood by browsers because of a default value applied, you should ask if it is:

  • a third-party cookie: associated with a domain name different from that of the page where the cookie is encountered. A third-party cookie is placed by a page object (e.g. an ad) originating from a domain other than the one hosting the page

or

  • a first-party cookie: associated with the domain of the page

 

Depending on your use case, you should choose the appropriate value for the SameSite attribute of your web session cookie.

To reinforce security, the Secure attribute must be set for the web session cookie when the connection is secured (HTTPS) to indicate to the browser that the cookie can be sent safely.

Keep reading to learn how 4D has your back to improve privacy and security across the web.

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4D Data Explorer in Action

Even though the 4D Data Explorer is still in Preview version (there are certainly more features to come in the next versions), we thought we’d show you the product in action and let you discover its capabilities.

This is a web browser interface usable by the administrator as well as the developer, remotely (in a secure way with an HTTPS connection) or locally on the same machine as your opened database.

Need to check your data during development? Need to find data that could cause bugs? The Data Explorer, with its powerful query engine and intuitive web interface, is made for you!

Let’s watch the video:

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