-GST_handle_barrier_cancel (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message);
+handle_barrier_cancel (void *cls,
+ const struct GNUNET_TESTBED_BarrierCancel *msg);
+
+
+/**
+ * Check #GNUNET_MESSAGE_TYPE_TESTBED_BARRIER_STATUS messages.
+ *
+ * @param cls identification of the client
+ * @param msg the actual message
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+int
+check_barrier_status (void *cls,
+ const struct GNUNET_TESTBED_BarrierStatusMsg *msg);