DBusConnection.flush
void flush(gio.cancellable.Cancellable cancellable = null, gio.types.AsyncReadyCallback callback = null)Asynchronously flushes connection, that is, writes all queued outgoing message to the transport and then flushes the transport (using [gio.output_stream.OutputStream.flushAsync]). This is useful in programs that wants to emit a D-Bus signal and then exit immediately. Without flushing the connection, there is no guaranteed that the message has been sent to the networking buffers in the OS kernel.
This is an asynchronous method. When the operation is finished, callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call [gio.dbus_connection.DBusConnection.flushFinish] to get the result of the operation. See [gio.dbus_connection.DBusConnection.flushSync] for the synchronous version.
Parameters
cancellable | a #GCancellable or null |
callback | a #GAsyncReadyCallback to call when the request is satisfied or null if you don't care about the result |