2 This file is part of GNUnet.
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6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
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22 * @file rps/gnunet-rps.c
23 * @brief random peer sampling
24 * @author Julius Bünger
27 #include "gnunet_util_lib.h"
28 #include "gnunet_rps_service.h"
36 static struct GNUNET_RPS_Handle *rps_handle;
41 static struct GNUNET_RPS_Request_Handle *req_handle;
44 * PeerID (Option --seed)
46 static struct GNUNET_PeerIdentity peer_id;
50 * Task run when user presses CTRL-C to abort.
51 * Cancels pending request and disconnects.
56 do_shutdown (void *cls)
58 if (NULL != req_handle)
59 GNUNET_RPS_request_cancel (req_handle);
60 GNUNET_RPS_disconnect (rps_handle);
65 * Callback called on receipt of reply.
66 * Prints replied PeerIDs.
69 * @param n number of peers
70 * @param recv_peers the received peers
73 reply_handle (void *cls,
75 const struct GNUNET_PeerIdentity *recv_peers)
80 for (i = 0; i < n; i++)
82 FPRINTF (stdout, "%s\n",
83 GNUNET_i2s_full (&recv_peers[i]));
87 GNUNET_SCHEDULER_shutdown ();
92 * Main function that will be run by the scheduler.
95 * @param args remaining command-line arguments
96 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
97 * @param cfg configuration
103 const struct GNUNET_CONFIGURATION_Handle *cfg)
105 static uint64_t num_peers;
106 static struct GNUNET_PeerIdentity zero_pid;
108 rps_handle = GNUNET_RPS_connect (cfg);
110 if (0 == memcmp (&zero_pid,
113 { /* Request n PeerIDs */
114 /* If number was specified use it, else request single peer. */
115 num_peers = (NULL == args[0]) ? 1 : atoi (args[0]);
116 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
117 "Requesting %" PRIu64 " PeerIDs\n", num_peers);
118 req_handle = GNUNET_RPS_request_peers (rps_handle, num_peers, reply_handle, NULL);
119 GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
123 GNUNET_RPS_seed_ids (rps_handle, 1, &peer_id);
124 FPRINTF (stdout, "Seeded PeerID %s\n", GNUNET_i2s_full (&peer_id));
126 GNUNET_SCHEDULER_add_now (&do_shutdown, NULL);
131 * The main function to rps.
133 * @param argc number of arguments from the command line
134 * @param argv command line arguments
135 * @return 0 ok, 1 on error
138 main (int argc, char *const *argv)
140 const char helpstr[] =
141 "Get random GNUnet peers. If none is specified a single is requested.";
142 struct GNUNET_GETOPT_CommandLineOption options[] = {
143 GNUNET_GETOPT_option_base32_auto ('s',
146 gettext_noop ("Seed a PeerID"),
148 GNUNET_GETOPT_OPTION_END
151 GNUNET_PROGRAM_run (argc,
153 "gnunet-rps [NUMBER_OF_PEERS]",
156 options, &run, NULL)) ? ret : 1;
159 /* end of gnunet-rps.c */