+ * notify_transmit_ready GNUNET_MESH_TransmitReady
+ * notify_transmit_ready_cancel None (clear of internal data structures)
+ *
+ *
+ *
+ * EVENT MESSAGE USED
+ * ----- ------------
+ * notify_transmit_ready reply GNUNET_MESH_TransmitReady
+ * notify_transmit_ready data GNUNET_MESH_Data OR
+ * GNUNET_MESH_DataBroadcast
+ * new incoming tunnel GNUNET_MESH_PeerControl
+ * peer connects to a tunnel GNUNET_MESH_PeerControl
+ * peer disconnects from a tunnel GNUNET_MESH_PeerControl