Our development of the QUIC network layer continues, and with 4D 20 R4, we now have the sleep mode and the automatic update. Let’s take a closer look at these enhancements and see how they compare to the way they work with other network layers.
In 4D v20 beta, we were excited to show you our work on the new QUIC network layer. As the layer is still in the beta version, we deactivated it for the LTS final release. The QUIC layer will be available in the feature releases, so you can follow its development and help us improve it.
While 4D v20 allowed switching network layers only in interpreted applications and forced a new build for engined applications, 4D v20 R2 allows layer changing in compiled/build applications via the Structure, User and Database Settings to facilitate testing even in production.
The most considerable production servers running with 4D accept more than a thousand simultaneous connections, and this number keeps growing. As a consequence, performance becomes an increasingly important focus of our teams. The QUIC protocol, used by the new version of the HTTP standard, has been specifically built to increase speed and reliability. As we are always looking for exciting technologies, we are working on replacing our low-level network protocol with the QUIC protocol.
For v20, you can switch to this network layer and check if it improves your performance. This is still in beta test, as we need your feedback before using it as our default network layer. As such, you will only be able to use it on beta versions of 4D.
Over the years, security has become a core topic for business applications. As a 4D developer, you are constantly facing customers who pay close attention to the level of security in the solutions they use for running their everyday businesses.
To help you answer your customers’ security-related questions, we are pleased to announce the release of the 4D Security Guide.
This reference document describes all the built-in tools and techniques involved in creating a secured environment for your business applications: from authentication and TLS encryption, to data access system and data protection. Now it’s time for you to check it out!
Over the years, security has become a core topic for business applications. Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), both frequently referred to as “SSL”, are cryptographic protocols that provide communications security over a computer network. The TLS version that your application is using for web or client/server connections, for instance, contributes to its security level.
4D supports all TLS versions: 1.0, 1.1 and 1.2. The protocol version used is negotiated between the server and the client when establishing the connection. To increase the security level, beginning with 4D v16 R5, the default minimum supported version is TLS 1.2, older versions are rejected, as they could be unsecure.
Besides the fact that it has a larger address space, IPv6 also has many other advantages over IPv4: built-in features like support of multicast transmission, increased security with IPSec (providing confidentiality, authentication and data integrity) and the ability to display, in the 4D client connection dialog box, all the 4D Server available even if they are published on a non standard port (different than 19813).
4D introduced IPv6 support with 4D v14, however some dialogs were not perfectly arranged for the IPv6 use cases. 4D v16 R4 provides some UI improvements for a better user experience for people using IPv6 network configurations.
With the new network layer, we can implement new functions that were impossible with the legacy network layer. The first is the application sleep notification.