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22 * @file dht/gnunet-service-dht.c
23 * @brief GNUnet DHT service
24 * @author Christian Grothoff
25 * @author Nathan Evans
28 #include "gnunet_block_lib.h"
29 #include "gnunet_util_lib.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_transport_hello_service.h"
32 #include "gnunet_hello_lib.h"
33 #include "gnunet_dht_service.h"
34 #include "gnunet_statistics_service.h"
35 #include "gnunet-service-dht.h"
36 #include "gnunet-service-dht_clients.h"
37 #include "gnunet-service-dht_datacache.h"
38 #include "gnunet-service-dht_hello.h"
39 #include "gnunet-service-dht_neighbours.h"
40 #include "gnunet-service-dht_nse.h"
41 #include "gnunet-service-dht_routing.h"
45 * Handle for the statistics service.
47 struct GNUNET_STATISTICS_Handle *GDS_stats;
50 * Our handle to the BLOCK library.
52 struct GNUNET_BLOCK_Context *GDS_block_context;
55 * The configuration the DHT service is running with
57 const struct GNUNET_CONFIGURATION_Handle *GDS_cfg;
60 * Handle to our server.
62 struct GNUNET_SERVER_Handle *GDS_server;
67 struct GNUNET_MessageHeader *GDS_my_hello;
70 * Handle to get our current HELLO.
72 static struct GNUNET_TRANSPORT_HelloGetHandle *ghh;
75 * Hello address expiration
77 struct GNUNET_TIME_Relative hello_expiration;
81 * Receive the HELLO from transport service, free current and replace
85 * @param message HELLO message of peer
88 process_hello (void *cls,
89 const struct GNUNET_MessageHeader *message)
91 GNUNET_free_non_null (GDS_my_hello);
92 GDS_my_hello = GNUNET_malloc (ntohs (message->size));
93 GNUNET_memcpy (GDS_my_hello, message, ntohs (message->size));
98 * Task run during shutdown.
103 shutdown_task (void *cls)
107 GNUNET_TRANSPORT_hello_get_cancel (ghh);
110 GDS_NEIGHBOURS_done ();
111 GDS_DATACACHE_done ();
115 if (NULL != GDS_block_context)
117 GNUNET_BLOCK_context_destroy (GDS_block_context);
118 GDS_block_context = NULL;
120 if (NULL != GDS_stats)
122 GNUNET_STATISTICS_destroy (GDS_stats,
126 GNUNET_free_non_null (GDS_my_hello);
132 * Process dht requests.
135 * @param server the initialized server
136 * @param c configuration to use
140 struct GNUNET_SERVER_Handle *server,
141 const struct GNUNET_CONFIGURATION_Handle *c)
145 GNUNET_SERVER_suspend (server);
147 GNUNET_CONFIGURATION_get_value_time (c,
152 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
154 GDS_block_context = GNUNET_BLOCK_context_create (GDS_cfg);
155 GDS_stats = GNUNET_STATISTICS_create ("dht", GDS_cfg);
158 GDS_DATACACHE_init ();
160 if (GNUNET_OK != GDS_NEIGHBOURS_init ())
162 shutdown_task (NULL);
165 GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
167 ghh = GNUNET_TRANSPORT_hello_get (GDS_cfg,
168 GNUNET_TRANSPORT_AC_GLOBAL,
175 * The main function for the dht service.
177 * @param argc number of arguments from the command line
178 * @param argv command line arguments
179 * @return 0 ok, 1 on error
188 GNUNET_SERVICE_run (argc,
191 GNUNET_SERVICE_OPTION_NONE,
198 /* end of gnunet-service-dht.c */