+/**
+ * Tell a client that we are ready to receive the message.
+ *
+ * @param car request that is now ready; the responsibility
+ * for the handle remains shared between CLIENTS
+ * and SESSIONS after this call.
+ */
+void
+GSC_CLIENTS_solicit_request (struct GSC_ClientActiveRequest *car);
+
+
+/**
+ * We will never be ready to transmit the given message in (disconnect
+ * or invalid request). Frees resources associated with @a car. We
+ * don't explicitly tell the client, he'll learn with the disconnect
+ * (or violated the protocol).
+ *
+ * @param car request that now permanently failed; the
+ * responsibility for the handle is now returned
+ * to CLIENTS (SESSIONS is done with it).
+ * @param drop_client #GNUNET_YES if the client violated the protocol
+ * and we should thus drop the connection
+ */
+void
+GSC_CLIENTS_reject_request (struct GSC_ClientActiveRequest *car,
+ int drop_client);
+
+
+/**
+ * Notify a particular client about a change to existing connection to
+ * one of our neighbours (check if the client is interested). Called
+ * from #GSC_SESSIONS_notify_client_about_sessions().
+ *
+ * @param client client to notify
+ * @param neighbour identity of the neighbour that changed status
+ * @param tmap_old previous type map for the neighbour, NULL for connect
+ * @param tmap_new updated type map for the neighbour, NULL for disconnect
+ */
+void
+GSC_CLIENTS_notify_client_about_neighbour (struct GSC_Client *client,
+ const struct GNUNET_PeerIdentity *neighbour,
+ const struct GSC_TypeMap *tmap_old,
+ const struct GSC_TypeMap *tmap_new);
+
+
+/**
+ * Deliver P2P message to interested clients. Caller must have checked
+ * that the sending peer actually lists the given message type as one
+ * of its types.
+ *
+ * @param sender peer who sent us the message
+ * @param msg the message
+ * @param msize number of bytes to transmit
+ * @param options options for checking which clients should
+ * receive the message
+ */
+void
+GSC_CLIENTS_deliver_message (const struct GNUNET_PeerIdentity *sender,
+ const struct GNUNET_MessageHeader *msg,
+ uint16_t msize,
+ uint32_t options);
+
+
+/**
+ * Notify all clients about a change to existing session.
+ * Called from SESSIONS whenever there is a change in sessions
+ * or types processed by the respective peer.
+ *
+ * @param neighbour identity of the neighbour that changed status
+ * @param tmap_old previous type map for the neighbour, NULL for connect
+ * @param tmap_new updated type map for the neighbour, NULL for disconnect
+ */
+void
+GSC_CLIENTS_notify_clients_about_neighbour (const struct GNUNET_PeerIdentity *neighbour,
+ const struct GSC_TypeMap *tmap_old,
+ const struct GSC_TypeMap *tmap_new);
+
+