Package org.freedesktop.dbus.connections.impl

Class DirectConnection

  • All Implemented Interfaces:
    Closeable, AutoCloseable
    public class DirectConnection
extends AbstractConnection
    Handles a peer to peer connection between two applications withou a bus daemon.

    Signal Handlers and method calls from remote objects are run in their own threads, you MUST handle the concurrency issues.

    • Constructor Detail

      • DirectConnection

        public DirectConnection​(String address)
                 throws DBusException
        Create a direct connection to another application.
        Parameters:
        address - The address to connect to. This is a standard D-Bus address, except that the additional parameter 'listen=true' should be added in the application which is creating the socket.
        Throws:
        DBusException - on error

      • DirectConnection

        public DirectConnection​(String address,
                        int timeout)
                 throws DBusException
        Create a direct connection to another application.
        Parameters:
        address - The address to connect to. This is a standard D-Bus address, except that the additional parameter 'listen=true' should be added in the application which is creating the socket.
        timeout - the timeout set for the underlying socket. 0 will block forever on the underlying socket.
        Throws:
        DBusException - on error

    • Method Detail

      • listen

        public void listen()
        Use this method when running on server side. Call will block.
        Overrides:
        listen in class AbstractConnection

      • createDynamicTCPSession

        public static String createDynamicTCPSession()
        Creates a bus address for a randomly generated tcp port.
        Returns:
        a random bus address.

      • createDynamicSession

        public static String createDynamicSession()
        Creates a bus address for a randomly generated abstract unix socket.
        Returns:
        a random bus address.

      • getRemoteObject

        public DBusInterface getRemoteObject​(String objectpath)
                              throws DBusException
        Return a reference to a remote object. This method will always refer to the well known name (if given) rather than resolving it to a unique bus name. In particular this means that if a process providing the well known name disappears and is taken over by another process proxy objects gained by this method will make calls on the new proccess. This method will use bus introspection to determine the interfaces on a remote object and so may block and may fail. The resulting proxy object will, however, be castable to any interface it implements. It will also autostart the process if applicable. Also note that the resulting proxy may fail to execute the correct method with overloaded methods and that complex types may fail in interesting ways. Basically, if something odd happens, try specifying the interface explicitly.
        Parameters:
        objectpath - The path on which the process is exporting the object.
        Returns:
        A reference to a remote object.
        Throws:
        ClassCastException - If type is not a sub-type of DBusInterface
        DBusException - If busname or objectpath are incorrectly formatted.

      • getRemoteObject

        public <T extends DBusInterface> T getRemoteObject​(String objectpath,
                                                   Class<T> type)
                                            throws DBusException
        Return a reference to a remote object. This method will always refer to the well known name (if given) rather than resolving it to a unique bus name. In particular this means that if a process providing the well known name disappears and is taken over by another process proxy objects gained by this method will make calls on the new proccess.
        Type Parameters:
        T - class which extends DBusInterface
        Parameters:
        objectpath - The path on which the process is exporting the object.
        type - The interface they are exporting it on. This type must have the same full class name and exposed method signatures as the interface the remote object is exporting.
        Returns:
        A reference to a remote object.
        Throws:
        ClassCastException - If type is not a sub-type of DBusInterface
        DBusException - If busname or objectpath are incorrectly formatted or type is not in a package.