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22 * @file core/gnunet-service-core.h
23 * @brief Globals for gnunet-service-core
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_CORE_H
27 #define GNUNET_SERVICE_CORE_H
29 #include "gnunet_statistics_service.h"
30 #include "gnunet_core_service.h"
32 #include "gnunet-service-core_typemap.h"
36 * Opaque handle to a client.
42 * Record kept for each request for transmission issued by a
43 * client that is still pending. (This struct is used by
44 * both the 'CLIENTS' and 'SESSIONS' subsystems.)
46 struct GSC_ClientActiveRequest {
48 * Active requests are kept in a doubly-linked list of
49 * the respective target peer.
51 struct GSC_ClientActiveRequest *next;
54 * Active requests are kept in a doubly-linked list of
55 * the respective target peer.
57 struct GSC_ClientActiveRequest *prev;
60 * Handle to the client.
62 struct GSC_Client *client_handle;
65 * Which peer is the message going to be for?
67 struct GNUNET_PeerIdentity target;
70 * At what time did we first see this request?
72 struct GNUNET_TIME_Absolute received_time;
75 * By what time would the client want to see this message out?
77 struct GNUNET_TIME_Absolute deadline;
80 * How important is this request.
82 enum GNUNET_MQ_PriorityPreferences priority;
85 * Has this request been solicited yet?
90 * How many bytes does the client intend to send?
95 * Unique request ID (in big endian).
102 * Tell a client that we are ready to receive the message.
104 * @param car request that is now ready; the responsibility
105 * for the handle remains shared between CLIENTS
106 * and SESSIONS after this call.
109 GSC_CLIENTS_solicit_request(struct GSC_ClientActiveRequest *car);
113 * We will never be ready to transmit the given message in (disconnect
114 * or invalid request). Frees resources associated with @a car. We
115 * don't explicitly tell the client, it'll learn with the disconnect
116 * (or violated the protocol).
118 * @param car request that now permanently failed; the
119 * responsibility for the handle is now returned
120 * to CLIENTS (SESSIONS is done with it).
121 * @param drop_client #GNUNET_YES if the client violated the protocol
122 * and we should thus drop the connection
125 GSC_CLIENTS_reject_request(struct GSC_ClientActiveRequest *car,
130 * Notify a particular client about a change to existing connection to
131 * one of our neighbours (check if the client is interested). Called
132 * from #GSC_SESSIONS_notify_client_about_sessions().
134 * @param client client to notify
135 * @param neighbour identity of the neighbour that changed status
136 * @param tmap_old previous type map for the neighbour, NULL for connect
137 * @param tmap_new updated type map for the neighbour, NULL for disconnect
140 GSC_CLIENTS_notify_client_about_neighbour(
141 struct GSC_Client *client,
142 const struct GNUNET_PeerIdentity *neighbour,
143 const struct GSC_TypeMap *tmap_old,
144 const struct GSC_TypeMap *tmap_new);
148 * Deliver P2P message to interested clients. Caller must have checked
149 * that the sending peer actually lists the given message type as one
152 * @param sender peer who sent us the message
153 * @param msg the message
154 * @param msize number of bytes to transmit
155 * @param options options for checking which clients should
156 * receive the message
159 GSC_CLIENTS_deliver_message(const struct GNUNET_PeerIdentity *sender,
160 const struct GNUNET_MessageHeader *msg,
166 * Notify all clients about a change to existing session.
167 * Called from SESSIONS whenever there is a change in sessions
168 * or types processed by the respective peer.
170 * @param neighbour identity of the neighbour that changed status
171 * @param tmap_old previous type map for the neighbour, NULL for connect
172 * @param tmap_new updated type map for the neighbour, NULL for disconnect
175 GSC_CLIENTS_notify_clients_about_neighbour(
176 const struct GNUNET_PeerIdentity *neighbour,
177 const struct GSC_TypeMap *tmap_old,
178 const struct GSC_TypeMap *tmap_new);
184 extern const struct GNUNET_CONFIGURATION_Handle *GSC_cfg;
187 * For creating statistics.
189 extern struct GNUNET_STATISTICS_Handle *GSC_stats;
194 extern struct GNUNET_PeerIdentity GSC_my_identity;