gboolean device_write_from_connection(Device *self, guint64 size, guint64 *actual_size);
gboolean device_read_to_connection(Device *self, guint64 size, guint64 *actual_size);
gboolean device_use_connection(Device *self, DirectTCPConnection *conn);
gboolean device_write_from_connection(Device *self, guint64 size, guint64 *actual_size);
gboolean device_read_to_connection(Device *self, guint64 size, guint64 *actual_size);
gboolean device_use_connection(Device *self, DirectTCPConnection *conn);