In technical terms, D-Bus behaves as an RPC mechanism and provides its own marshaling. Because data is not just "raw bytes" to D-Bus, messages can be validated and ill-formed messages rejected. Both one-to-one messaging and publish/subscribe communication are supported.ĭ-Bus has a structured view of the data it carries, and deals with data in binary form: integral numbers of various widths, floating-point numbers, strings, compound types, and so on. On the other hand, it does carry messages as discrete items-not continuous streams of data as is the case with TCP. It is stateful and connection-based, however, making it "smarter" than low-level message-passing protocols such as UDP. Unlike more heavyweight conventional messaging middleware, D-Bus is non-transactional. If you're familiar with many communication mechanisms, here's a quick rundown of this one. D-Bus is meant to be fast and lightweight, and is designed for use as a unified middleware layer underneath the main free desktop environments. (Inter-host connects may be added in the future, but that is not what D-Bus is meant for). Introduction to D-Busĭ-Bus is an inter-process communication mechanism-a medium for local communication between processes running on the same host. A perfectly good explanation written from the perspective of one particular programming language can sometimes mislead a new user, or even an experienced user, when using another language. We'll also try to give an overview of how different people's views of D-Bus overlap and differ. In this document we try to explain them from the ground up so you won't run into unexplained terms that will only become clear later. There's a long list of words that have special meanings in the D-Bus world, and not all of them are completely standardized. Reading all this first can be useful even if you have a good tutorial to work with. The idea is that you can read this before you move on to tutorials or how-to guides for whatever it is you want to use D-Bus for. There will be no unnecessary technical detail, and no assumptions about what language you like to program in. What you will find here is an explanation what D-Bus really is, what the concepts behind it are and how they fit together, and what jargon you'll need to know to understand it all. It won't tell you how to install D-Bus or how to program for it. It will not show you how to use D-Bus (yet). To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.The following text is not a tutorial or a reference. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.
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