+#define GNUNET_MESSAGE_TYPE_TRANSPORT_INCOMING_MSG_ACK 1203
+
+/**
+ * @brief inform transport that a queue was setup to talk to some peer
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_SETUP 1204
+
+/**
+ * @brief inform transport that a queue was torn down
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_TEARDOWN 1205
+
+/**
+ * @brief transport tells communicator it wants a queue
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE 1206
+
+/**
+ * Response from communicator: will try to create queue.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_OK 1207
+
+/**
+ * Response from communicator: address bogus, will not try to create queue.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_FAIL 1208
+
+/**
+ * @brief transport tells communicator it wants to transmit
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG 1209
+
+/**
+ * @brief communicator tells transports that message was sent
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG_ACK 1210
+
+/**
+ * Message sent to indicate to the transport which address
+ * prefix is supported by a communicator.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_NEW_COMMUNICATOR 1211
+
+/**
+ * Tell transport that it should assist with exchanging a
+ * message between communicators. Usually used when
+ * communciators are uni-directional and need an alternative
+ * back-channel.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_COMMUNICATOR_BACKCHANNEL 1212
+
+/**
+ * Message type used between transport services when they
+ * internally forward communicator backchannel messages.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_BACKCHANNEL_ENCAPSULATION 1213
+
+
+/**
+ * Message sent to indicate to the transport that a monitor
+ * wants to observe certain events.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_START 1250
+
+/**
+ * Message sent to indicate to a monitor about events.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_DATA 1251
+
+/**
+ * Message sent to indicate to a monitor that a one-shot
+ * iteration over events is done.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_END 1252
+
+/**
+ * Message exchanged between communicators to confirm
+ * successful KX (and address validation).
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_COMMUNICATOR_KX_CONFIRMATION 1275
+
+/**
+ * Message exchanged between communicators to exchange
+ * flow control (FC) limits and acknowledgemets.
+ */
+#define GNUNET_MESSAGE_TYPE_TRANSPORT_COMMUNICATOR_FC_LIMITS 1276
+
+
+/* ************** NEW (NG) ATS Messages ************* */
+
+/**
+ * Type of the 'struct ExpressPreferenceMessage' send by clients to ATS
+ * to establish bandwidth preference.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SUGGEST 1400
+
+/**
+ * Type of the 'struct ExpressPreferenceMessage' send by clients to ATS
+ * to abandon bandwidth preference.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SUGGEST_CANCEL 1401
+
+
+/**
+ * Type of the 'struct SessionAddMessage' send by transport clients to ATS
+ * to ask ATS to allocate resources to a session.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SESSION_ADD 1402
+
+/**
+ * Type of the 'struct SessionAddMessage' send by transport clients to ATS
+ * to inform ATS about a session where resources are consumed but allocation
+ * is impossible (unidirectional).
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SESSION_ADD_INBOUND_ONLY 1403
+
+/**
+ * Type of the 'struct SessionUpdateMessage' send by transport clients to ATS
+ * to inform ATS about property changes of a session.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SESSION_UPDATE 1404
+
+/**
+ * Type of the 'struct SessionDelMessage' send by transport clients to ATS
+ * to tell ATS that a session is no longer available.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SESSION_DEL 1405
+
+/**
+ * Type of the 'struct SessionAllocationMessage' send by ATS to the
+ * transport to tell it about resources to allocate to the session.
+ */
+#define GNUNET_MESSAGE_TYPE_ATS_SESSION_ALLOCATION 1406
+
+
+/**
+ * Next available: 1450
+ */
+