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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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24 * @author Julius Bünger
27 #include "gnunet_util_lib.h"
29 #include "gnunet_rps_service.h"
32 * Handler to handle requests from a client.
34 struct GNUNET_RPS_Handle
37 * The handle to the client configuration.
39 const struct GNUNET_CONFIGURATION_Handle *cfg;
42 * The connection to the client.
44 struct GNUNET_CLIENT_Connection *conn;
47 * The message queue to the client.
49 struct GNUNET_MQ_Handle *mq;
53 * Handler to single requests from the client.
55 struct GNUNET_RPS_Request_Handle
58 * The client issuing the request.
60 struct GNUNET_RPS_Handle *h;
63 * The nuber of the request.
68 * The callback to be called when we receive an answer.
70 GNUNET_RPS_NotifyReadyCB ready_cb;
73 * The closure for the callback.
79 * Array of Request_Handles.
81 struct GNUNET_RPS_Request_Handle *req_handlers = NULL;
84 * Current length of req_handlers.
86 unsigned int req_handlers_size = 0;
89 * Struct used to pack the callback, its closure (provided by the caller)
90 * and the connection handler to the service to pass it to a callback function.
95 * Callback provided by the client
97 GNUNET_RPS_NotifyReadyCB cb;
100 * Closure provided by the client
105 * Handle to the service connection
107 struct GNUNET_CLIENT_Connection *service_conn;
114 * This function is called, when the service replies to our request.
115 * It calls the callback the caller gave us with the provided closure
116 * and disconnects afterwards.
118 * @param cls the closure
119 * @param message the message
122 handle_reply (void *cls,
123 const struct GNUNET_MessageHeader *message)
125 struct GNUNET_RPS_CS_ReplyMessage *msg;
126 //struct cb_cls_pack *pack;
127 //struct GNUNET_RPS_Handle *h;
128 struct GNUNET_PeerIdentity *peers;
129 struct GNUNET_RPS_Request_Handle *rh;
131 /* Give the peers back */
132 msg = (struct GNUNET_RPS_CS_ReplyMessage *) message;
133 //pack = (struct cb_cls_pack *) cls;
134 //h = (struct GNUNET_RPS_Handle *) cls;
135 peers = (struct GNUNET_PeerIdentity *) &msg[1];
136 rh = &req_handlers[msg->n];
137 rh->ready_cb((rh)->ready_cb_cls, msg->num_peers, peers);
140 //GNUNET_CLIENT_disconnect(pack->service_conn);
146 mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
152 * Request n random peers.
154 * @param cfg the configuration to use.
155 * @param n number of peers requesting.
156 * @param cb a callback function called when the peers are ready
157 * @param cls a closure given to the callback function
159 struct GNUNET_RPS_Request_Handle *
160 GNUNET_RPS_request_peers_single_call (const struct GNUNET_CONFIGURATION_Handle *cfg,
162 GNUNET_RPS_NotifyReadyCB ready_cb,
165 //struct GNUNET_CLIENT_Connection *service_conn;
166 //static const struct GNUNET_MQ_MessageHandler mq_handlers[] = {
167 // {&handle_reply, GNUNET_MESSAGE_TYPE_RPS_CS_REPLY, 0},
168 // GNUNET_MQ_HANDLERS_END
170 //struct cb_cls_pack *pack;
171 //struct GNUNET_MQ_Handle *mq;
172 //struct GNUNET_MQ_Envelope *ev;
173 //struct GNUNET_RPS_CS_RequestMessage *msg;
174 struct GNUNET_RPS_Handle *h;
175 struct GNUNET_RPS_Request_Handle *rh;
177 /* Connect to the service */
178 h = GNUNET_RPS_connect(cfg);
179 //h = GNUNET_new(struct GNUNET_RPS_Handle);
180 //h->conn = GNUNET_CLIENT_connect("rps", cfg);
181 //rh = GNUNET_new(struct GNUNET_RPS_Request_Handle);
182 ////pack = GNUNET_malloc(sizeof(struct cb_cls_pack));
183 ////pack->cb = ready_cb;
185 ////pack->service_conn = service_conn;
186 //mq = GNUNET_MQ_queue_for_connection_client(service_conn,
188 // mq_error_handler, // TODO implement
191 /* Send the request to the service */
192 rh = GNUNET_RPS_request_peers(h, n, ready_cb, cls);
193 //ev = GNUNET_MQ_msg(msg, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST);
194 //msg->num_peers = GNUNET_htonll(n);
195 //GNUNET_MQ_send(mq, ev);
196 //GNUNET_CLIENT_disconnect(service_conn);
197 //rh = GNUNET_new(struct GNUNET_RPS_Request_Handle);
198 GNUNET_RPS_disconnect(h);
203 * Connect to the rps service
205 * @param cfg configuration to use
206 * @return a handle to the service
208 struct GNUNET_RPS_Handle *
209 GNUNET_RPS_connect( const struct GNUNET_CONFIGURATION_Handle *cfg )
211 struct GNUNET_RPS_Handle *h;
212 //struct GNUNET_RPS_Request_Handle *rh;
213 static const struct GNUNET_MQ_MessageHandler mq_handlers[] = {
214 {&handle_reply, GNUNET_MESSAGE_TYPE_RPS_CS_REPLY, 0},
215 GNUNET_MQ_HANDLERS_END
218 h = GNUNET_new(struct GNUNET_RPS_Handle);
219 //h->cfg = GNUNET_new(struct GNUNET_CONFIGURATION_Handle);
221 h->cfg = cfg; // FIXME |^
222 h->conn = GNUNET_CLIENT_connect("rps", cfg);
223 h->mq = GNUNET_MQ_queue_for_connection_client(h->conn,
225 mq_error_handler, // TODO implement
233 * Request n random peers.
235 * @param h handle to the rps service
236 * @param n number of peers we want to receive
237 * @param ready_cb the callback called when the peers are available
238 * @param cls closure given to the callback
239 * @return a handle to cancel this request
241 struct GNUNET_RPS_Request_Handle *
242 GNUNET_RPS_request_peers (struct GNUNET_RPS_Handle *h, uint64_t n,
243 GNUNET_RPS_NotifyReadyCB ready_cb,
246 struct GNUNET_RPS_Request_Handle *rh;
247 struct GNUNET_MQ_Envelope *ev;
248 struct GNUNET_RPS_CS_RequestMessage *msg;
250 // assert func != NULL
251 rh = GNUNET_new(struct GNUNET_RPS_Request_Handle);
253 rh->n = req_handlers_size; // TODO ntoh
254 rh->ready_cb = ready_cb;
255 rh->ready_cb_cls = cls;
257 GNUNET_array_append(req_handlers, req_handlers_size, *rh);
258 //memcpy(&req_handlers[req_handlers_size-1], rh, sizeof(struct GNUNET_RPS_Request_Handle));
260 ev = GNUNET_MQ_msg(msg, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST);
261 msg->num_peers = GNUNET_htonll(n);
263 GNUNET_MQ_send(h->mq, ev);
268 * Seed rps service with peerIDs.
270 * @param h handle to the rps service
271 * @param n number of peers to seed
272 * @param ids the ids of the peers seeded
275 GNUNET_RPS_seed_ids (struct GNUNET_RPS_Handle *h, uint64_t n,
276 struct GNUNET_PeerIdentity * ids)
281 * Cancle an issued request.
283 * @param rh request handle of request to cancle
286 GNUNET_RPS_request_cancel ( struct GNUNET_RPS_Request_Handle *rh )
292 * Disconnect from the rps service
294 * @param h the handle to the rps service
297 GNUNET_RPS_disconnect ( struct GNUNET_RPS_Handle *h )
299 if ( NULL != h->conn ) {
300 GNUNET_CLIENT_disconnect(h->conn);
305 /* end of rps_api.c */