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13 General Public License for more details.
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22 * @file include/gnunet_gns_service.h
23 * @brief API to the GNS service
24 * @author Martin Schanzenbach
27 #ifndef GNUNET_GNS_SERVICE_H
28 #define GNUNET_GNS_SERVICE_H
30 #include "gnunet_util_lib.h"
35 #if 0 /* keep Emacsens' auto-indent happy */
42 * Connection to the GNS service.
44 struct GNUNET_GNS_Handle;
47 * Handle to control a get operation.
49 struct GNUNET_GNS_LookupHandle;
52 * A single GNS record.
54 struct GNUNET_GNS_Record;
59 enum GNUNET_GNS_RecordType
62 GNUNET_GNS_RECORD_AAAA,
64 GNUNET_GNS_RECORD_PKEY
68 * Initialize the connection with the GNS service.
70 * @param cfg configuration to use
71 * @param ht_len size of the internal hash table to use for parallel lookups
72 * @return NULL on error
74 struct GNUNET_GNS_Handle *
75 GNUNET_GNS_connect (const struct GNUNET_CONFIGURATION_Handle *cfg
80 * Shutdown connection with the GNS service.
82 * @param handle connection to shut down
85 GNUNET_GNS_disconnect (struct GNUNET_GNS_Handle *handle);
88 /* *************** Standard API: add and lookup ******************* */
91 * Perform an add operation storing records in the GNS.
93 * @param handle handle to GNS service
94 * @param key the key to store under
95 * @param desired_replication_level estimate of how many
96 * nearest peers this request should reach
97 * @param options routing options for this message
98 * @param type type of the value
99 * @param size number of bytes in data; must be less than 64k
100 * @param data the data to store
101 * @param exp desired expiration time for the value
102 * @param timeout how long to wait for transmission of this request
103 * @param cont continuation to call when done (transmitting request to service)
104 * @param cont_cls closure for cont
107 GNUNET_GNS_add_record (struct GNUNET_GNS_Handle *handle,
109 enum GNUNET_GNS_RecordType type,
110 size_t size, const char *data,
111 struct GNUNET_TIME_Absolute exp,
112 struct GNUNET_TIME_Relative timeout);
116 * Iterator called on each result obtained for a GNS
117 * operation that expects a reply TODO: eh?
120 * @param exp when will this value expire
121 * @param key key of the result
122 * @param records the records in reply
123 * @param num_records the number of records in reply
124 * @param type type of the result
126 typedef void (*GNUNET_GNS_LookupIterator) (void *cls,
127 const GNUNET_HashCode * key,
128 const struct GNUNET_GNS_Record *record,
129 unsigned int num_records);
134 * Perform an asynchronous lookup operation on the GNS.
136 * @param handle handle to the GNS service
137 * @param timeout how long to wait for transmission of this request to the service
138 * @param type expected type of the response object
139 * @param key the key to look up
140 * @param desired_replication_level estimate of how many
141 nearest peers this request should reach
142 * @param options routing options for this message
143 * @param xquery extended query data (can be NULL, depending on type)
144 * @param xquery_size number of bytes in xquery
145 * @param iter function to call on each result
146 * @param iter_cls closure for iter
148 * @return handle to stop the async get
150 struct GNUNET_GNS_LookupHandle *
151 GNUNET_GNS_lookup_start (struct GNUNET_GNS_Handle *handle,
152 struct GNUNET_TIME_Relative timeout,
154 enum GNUNET_GNS_RecordType type,
155 GNUNET_GNS_LookupIterator iter,
160 * Stop async GNS lookup. Frees associated resources.
162 * @param lookup_handle lookup operation to stop.
164 * On return lookup_handle will no longer be valid, caller
165 * must not use again!!!
168 GNUNET_GNS_lookup_stop (struct GNUNET_GNS_LookupHandle *lookup_handle);
171 #if 0 /* keep Emacsens' auto-indent happy */
180 /* gnunet_gns_service.h */