DBUS EXAMPLE CODE

path A D-Bus-exposed API can be conceptually organized into a hierarchy. Conventionally, these look like reversed domain names. service A well-known bus name giving the destination of a method call. Well-known bus names are what you use in the 'service' field of a method call. D-Bus clients that want to listen for method calls can request a second bus name, a so-called well-known bus name, which is a name by which other D-Bus clients can refer to them. You can see these in the D-Bus traffic in the output of dbus-monitor. These consist of a colon character ':' followed by some numbers. Every D-Bus client is automatically assigned a bus name. bus name A unique identifier for a D-Bus client. So that leaves the session bus as generally being the most appropriate. An app-specific bus does not promote application interoperability. Accessing the system bus requires special permission. It is the same bus used by desktop session services, like KDE components for example. This egg uses the session bus by default. The usual choices are system bus, session bus or an app-specific bus. Terminology bus The aggregator and dispatcher of messages between processes. VersionДЄs of version 0.96, it seems to be more or less working, but the interface should not be considered 'frozen' yet. This egg is released under the MIT license, which is compatible with AFL. Later they switched to AFL / GPL dual license. Libdbus has historically had a GPL license. Support all D-Bus data types for method parameters and return values

DBUS EXAMPLE CODE

User code to do any of the above should be minimal: abstract away the orthogonal extra steps (open a connection, start a polling thread, etc.) Registered methods and signal-handlers are automatically included in the Introspectable interface implementation Register a procedure as a method which can be called from another processДЄssign a path to a Tinењњlos object and map applicable generic functions as D-Bus methodsД¬reate proxy methods matching remote methodsД¬reate proxy objects matching remote objects (so that all the remote object's applicable methods are made into local proxy methods)Дiscover methods and signals provided by services Register a procedure as a handler which will be called when a signal is received Goals & status GoalД¬all methods in other processes, and get the return valuesД¬all methods in other processes asynchronously, and the return values come back to a callback later D-Bus is a popular IPC (inter-process communication) protocol which is often used between system components (for example hald informs applications when new hardware becomes available, gpsd informs apps when the location has changed, or an application requests gsmd to place a phone call).

Dbus example