GNUnet  0.10.x
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DHT service

Distributed Hash Table. More...

Macros

#define GNUNET_DHT_DEFAULT_REPUBLISH_FREQUENCY   GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 60)
 Default republication frequency for stored data in the DHT. More...
 

Typedefs

typedef void(* GNUNET_DHT_GetIterator) (void *cls, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const struct GNUNET_PeerIdentity *get_path, unsigned int get_path_length, const struct GNUNET_PeerIdentity *put_path, unsigned int put_path_length, enum GNUNET_BLOCK_Type type, size_t size, const void *data)
 Iterator called on each result obtained for a DHT operation that expects a reply. More...
 
typedef void(* GNUNET_DHT_MonitorGetCB) (void *cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, unsigned int path_length, const struct GNUNET_PeerIdentity *path, const struct GNUNET_HashCode *key)
 Callback called on each GET request going through the DHT. More...
 
typedef void(* GNUNET_DHT_MonitorGetRespCB) (void *cls, enum GNUNET_BLOCK_Type type, const struct GNUNET_PeerIdentity *get_path, unsigned int get_path_length, const struct GNUNET_PeerIdentity *put_path, unsigned int put_path_length, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const void *data, size_t size)
 Callback called on each GET reply going through the DHT. More...
 
typedef void(* GNUNET_DHT_MonitorPutCB) (void *cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, unsigned int path_length, const struct GNUNET_PeerIdentity *path, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const void *data, size_t size)
 Callback called on each PUT request going through the DHT. More...
 

Enumerations

enum  GNUNET_DHT_RouteOption {
  GNUNET_DHT_RO_NONE = 0, GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE = 1, GNUNET_DHT_RO_RECORD_ROUTE = 2, GNUNET_DHT_RO_FIND_PEER = 4,
  GNUNET_DHT_RO_BART = 8, GNUNET_DHT_RO_LAST_HOP = 16
}
 Options for routing. More...
 

Functions

struct GNUNET_DHT_HandleGNUNET_DHT_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned int ht_len)
 Initialize the connection with the DHT service. More...
 
void GNUNET_DHT_disconnect (struct GNUNET_DHT_Handle *handle)
 Shutdown connection with the DHT service. More...
 
struct GNUNET_DHT_PutHandleGNUNET_DHT_put (struct GNUNET_DHT_Handle *handle, const struct GNUNET_HashCode *key, uint32_t desired_replication_level, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, size_t size, const void *data, struct GNUNET_TIME_Absolute exp, GNUNET_SCHEDULER_TaskCallback cont, void *cont_cls)
 Perform a PUT operation storing data in the DHT. More...
 
void GNUNET_DHT_put_cancel (struct GNUNET_DHT_PutHandle *ph)
 Cancels a DHT PUT operation. More...
 
struct GNUNET_DHT_GetHandleGNUNET_DHT_get_start (struct GNUNET_DHT_Handle *handle, enum GNUNET_BLOCK_Type type, const struct GNUNET_HashCode *key, uint32_t desired_replication_level, enum GNUNET_DHT_RouteOption options, const void *xquery, size_t xquery_size, GNUNET_DHT_GetIterator iter, void *iter_cls)
 Perform an asynchronous GET operation on the DHT identified. More...
 
void GNUNET_DHT_get_filter_known_results (struct GNUNET_DHT_GetHandle *get_handle, unsigned int num_results, const struct GNUNET_HashCode *results)
 Tell the DHT not to return any of the following known results to this client. More...
 
void GNUNET_DHT_get_stop (struct GNUNET_DHT_GetHandle *get_handle)
 Stop async DHT-get. More...
 
struct GNUNET_DHT_MonitorHandleGNUNET_DHT_monitor_start (struct GNUNET_DHT_Handle *handle, enum GNUNET_BLOCK_Type type, const struct GNUNET_HashCode *key, GNUNET_DHT_MonitorGetCB get_cb, GNUNET_DHT_MonitorGetRespCB get_resp_cb, GNUNET_DHT_MonitorPutCB put_cb, void *cb_cls)
 Start monitoring the local DHT service. More...
 
void GNUNET_DHT_monitor_stop (struct GNUNET_DHT_MonitorHandle *handle)
 Stop monitoring. More...
 

Detailed Description

Distributed Hash Table.

See also
Documentation

Macro Definition Documentation

◆ GNUNET_DHT_DEFAULT_REPUBLISH_FREQUENCY

#define GNUNET_DHT_DEFAULT_REPUBLISH_FREQUENCY   GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 60)

Default republication frequency for stored data in the DHT.

Definition at line 54 of file gnunet_dht_service.h.

Referenced by run(), and schedule_next_put().

Typedef Documentation

◆ GNUNET_DHT_GetIterator

typedef void(* GNUNET_DHT_GetIterator) (void *cls, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const struct GNUNET_PeerIdentity *get_path, unsigned int get_path_length, const struct GNUNET_PeerIdentity *put_path, unsigned int put_path_length, enum GNUNET_BLOCK_Type type, size_t size, const void *data)

Iterator called on each result obtained for a DHT operation that expects a reply.

Parameters
clsclosure
expwhen will this value expire
keykey of the result
get_pathpeers on reply path (or NULL if not recorded) [0] = datastore's first neighbor, [length - 1] = local peer
get_path_lengthnumber of entries in get_path
put_pathpeers on the PUT path (or NULL if not recorded) [0] = origin, [length - 1] = datastore
put_path_lengthnumber of entries in put_path
typetype of the result
sizenumber of bytes in data
datapointer to the result data

Definition at line 207 of file gnunet_dht_service.h.

◆ GNUNET_DHT_MonitorGetCB

typedef void(* GNUNET_DHT_MonitorGetCB) (void *cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, unsigned int path_length, const struct GNUNET_PeerIdentity *path, const struct GNUNET_HashCode *key)

Callback called on each GET request going through the DHT.

Parameters
clsClosure.
optionsOptions, for instance RecordRoute, DemultiplexEverywhere.
typeThe type of data in the request.
hop_countHop count so far.
path_lengthnumber of entries in path (or 0 if not recorded).
pathpeers on the GET path (or NULL if not recorded).
desired_replication_levelDesired replication level.
keyKey of the requested data.

Definition at line 291 of file gnunet_dht_service.h.

◆ GNUNET_DHT_MonitorGetRespCB

typedef void(* GNUNET_DHT_MonitorGetRespCB) (void *cls, enum GNUNET_BLOCK_Type type, const struct GNUNET_PeerIdentity *get_path, unsigned int get_path_length, const struct GNUNET_PeerIdentity *put_path, unsigned int put_path_length, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const void *data, size_t size)

Callback called on each GET reply going through the DHT.

Parameters
clsClosure.
typeThe type of data in the result.
get_pathPeers on GET path (or NULL if not recorded).
get_path_lengthnumber of entries in get_path.
put_pathpeers on the PUT path (or NULL if not recorded).
put_path_lengthnumber of entries in get_path.
expExpiration time of the data.
keyKey of the data.
dataPointer to the result data.
sizeNumber of bytes in data.

Definition at line 316 of file gnunet_dht_service.h.

◆ GNUNET_DHT_MonitorPutCB

typedef void(* GNUNET_DHT_MonitorPutCB) (void *cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, unsigned int path_length, const struct GNUNET_PeerIdentity *path, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode *key, const void *data, size_t size)

Callback called on each PUT request going through the DHT.

Parameters
clsClosure.
optionsOptions, for instance RecordRoute, DemultiplexEverywhere.
typeThe type of data in the request.
hop_countHop count so far.
path_lengthnumber of entries in path (or 0 if not recorded).
pathpeers on the PUT path (or NULL if not recorded).
desired_replication_levelDesired replication level.
expExpiration time of the data.
keyKey under which data is to be stored.
dataPointer to the data carried.
sizeNumber of bytes in data.

Definition at line 344 of file gnunet_dht_service.h.

Enumeration Type Documentation

◆ GNUNET_DHT_RouteOption

Options for routing.

Enumerator
GNUNET_DHT_RO_NONE 

Default.

Do nothing special.

GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE 

Each peer along the way should look at 'enc' (otherwise only the k-peers closest to the key should look at it).

GNUNET_DHT_RO_RECORD_ROUTE 

We should keep track of the route that the message took in the P2P network.

GNUNET_DHT_RO_FIND_PEER 

This is a 'FIND-PEER' request, so approximate results are fine.

GNUNET_DHT_RO_BART 

Possible message option for query key randomization.

GNUNET_DHT_RO_LAST_HOP 

Flag given to monitors if this was the last hop for a GET/PUT.

Definition at line 77 of file gnunet_dht_service.h.

77  {
82 
88 
94 
99 
103  GNUNET_DHT_RO_BART = 8,
104 
109 };
We should keep track of the route that the message took in the P2P network.
Possible message option for query key randomization.
Flag given to monitors if this was the last hop for a GET/PUT.
This is a 'FIND-PEER' request, so approximate results are fine.
Each peer along the way should look at 'enc' (otherwise only the k-peers closest to the key should lo...

Function Documentation

◆ GNUNET_DHT_connect()

struct GNUNET_DHT_Handle* GNUNET_DHT_connect ( const struct GNUNET_CONFIGURATION_Handle cfg,
unsigned int  ht_len 
)

Initialize the connection with the DHT service.

Parameters
cfgconfiguration to use
ht_lensize of the internal hash table to use for processing multiple GET/FIND requests in parallel
Returns
NULL on error
Parameters
cfgconfiguration to use
ht_lensize of the internal hash table to use for processing multiple GET/FIND requests in parallel
Returns
handle to the DHT service, or NULL on error

Definition at line 885 of file dht_api.c.

References GNUNET_DHT_Handle::active_requests, cfg, GNUNET_DHT_Handle::cfg, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CRYPTO_QUALITY_WEAK, GNUNET_CRYPTO_random_u64(), GNUNET_DHT_disconnect(), GNUNET_new, GNUNET_NO, GNUNET_YES, handle, try_connect(), and GNUNET_DHT_Handle::uid_gen.

Referenced by advertise_dns_exit(), dht_ca(), dht_connect(), dht_connect_adapter(), GCD_init(), and run().

887 {
888  struct GNUNET_DHT_Handle *handle;
889 
890  handle = GNUNET_new(struct GNUNET_DHT_Handle);
891  handle->cfg = cfg;
892  handle->uid_gen
894  UINT64_MAX);
895  handle->active_requests
897  GNUNET_YES);
898  if (GNUNET_NO == try_connect(handle))
899  {
900  GNUNET_DHT_disconnect(handle);
901  return NULL;
902  }
903  return handle;
904 }
struct GNUNET_CONTAINER_MultiHashMap * active_requests
Hash map containing the current outstanding unique GET requests (values are of type struct GNUNET_DHT...
Definition: dht_api.c:233
uint64_t GNUNET_CRYPTO_random_u64(enum GNUNET_CRYPTO_Quality mode, uint64_t max)
Random on unsigned 64-bit values.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_new(type)
Allocate a struct or union of the given type.
Connection to the DHT service.
Definition: dht_api.c:198
uint64_t uid_gen
Generator for unique ids.
Definition: dht_api.c:249
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
Definition: dht_api.c:202
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:104
static int try_connect(struct GNUNET_DHT_Handle *h)
Try to (re)connect to the DHT service.
Definition: dht_api.c:837
void GNUNET_DHT_disconnect(struct GNUNET_DHT_Handle *handle)
Shutdown connection with the DHT service.
Definition: dht_api.c:913
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
#define GNUNET_YES
Definition: gnunet_common.h:77
No good quality of the operation is needed (i.e., random numbers can be pseudo-random).
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◆ GNUNET_DHT_disconnect()

void GNUNET_DHT_disconnect ( struct GNUNET_DHT_Handle handle)

Shutdown connection with the DHT service.

Parameters
handleconnection to shut down
handlehandle of the DHT connection to stop

Definition at line 913 of file dht_api.c.

References GNUNET_DHT_Handle::active_requests, GNUNET_DHT_PutHandle::cont, GNUNET_DHT_PutHandle::cont_cls, GNUNET_assert, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_size(), GNUNET_DHT_put_cancel(), GNUNET_free, GNUNET_MQ_destroy(), GNUNET_SCHEDULER_cancel(), GNUNET_DHT_Handle::mq, ph, GNUNET_DHT_Handle::put_head, and GNUNET_DHT_Handle::reconnect_task.

Referenced by cleanup(), cleanup_task(), dht_da(), dht_disconnect(), dht_disconnect_adapter(), GCD_shutdown(), GNUNET_DHT_connect(), and shutdown_task().

914 {
915  struct GNUNET_DHT_PutHandle *ph;
916 
917  GNUNET_assert(0 ==
919  while (NULL != (ph = handle->put_head))
920  {
921  if (NULL != ph->cont)
922  ph->cont(ph->cont_cls);
924  }
925  if (NULL != handle->mq)
926  {
927  GNUNET_MQ_destroy(handle->mq);
928  handle->mq = NULL;
929  }
930  if (NULL != handle->reconnect_task)
931  {
933  handle->reconnect_task = NULL;
934  }
936  GNUNET_free(handle);
937 }
unsigned int GNUNET_CONTAINER_multihashmap_size(const struct GNUNET_CONTAINER_MultiHashMap *map)
Get the number of key-value pairs in the map.
void GNUNET_DHT_put_cancel(struct GNUNET_DHT_PutHandle *ph)
Cancels a DHT PUT operation.
Definition: dht_api.c:1030
struct GNUNET_CONTAINER_MultiHashMap * active_requests
Hash map containing the current outstanding unique GET requests (values are of type struct GNUNET_DHT...
Definition: dht_api.c:233
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_ATS_PerformanceHandle * ph
ATS performance handle used.
Definition: gnunet-ats.c:116
struct GNUNET_SCHEDULER_Task * reconnect_task
Task for trying to reconnect.
Definition: dht_api.c:238
GNUNET_SCHEDULER_TaskCallback cont
Continuation to call when done.
Definition: dht_api.c:57
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
void * cont_cls
Closure for cont.
Definition: dht_api.c:67
struct GNUNET_DHT_PutHandle * put_head
Head of active PUT requests.
Definition: dht_api.c:222
Handle to a PUT request.
Definition: dht_api.c:43
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:821
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ GNUNET_DHT_put()

struct GNUNET_DHT_PutHandle* GNUNET_DHT_put ( struct GNUNET_DHT_Handle handle,
const struct GNUNET_HashCode key,
uint32_t  desired_replication_level,
enum GNUNET_DHT_RouteOption  options,
enum GNUNET_BLOCK_Type  type,
size_t  size,
const void *  data,
struct GNUNET_TIME_Absolute  exp,
GNUNET_SCHEDULER_TaskCallback  cont,
void *  cont_cls 
)

Perform a PUT operation storing data in the DHT.

Parameters
handlehandle to DHT service
keythe key to store under
desired_replication_levelestimate of how many nearest peers this request should reach
optionsrouting options for this message
typetype of the value
sizenumber of bytes in data; must be less than 64k
datathe data to store
expdesired expiration time for the value
contcontinuation to call when done (transmitting request to service) You must not call GNUNET_DHT_disconnect in this continuation
cont_clsclosure for cont
Returns
handle to cancel the "PUT" operation, NULL on error (size too big)

FIXME: we should change the protocol to get a confirmation for the PUT from the DHT and call 'cont' only after getting the confirmation; otherwise, the client has no good way of telling if the 'PUT' message actually got to the DHT service!

Parameters
handlehandle to DHT service
keythe key to store under
desired_replication_levelestimate of how many nearest peers this request should reach
optionsrouting options for this message
typetype of the value
sizenumber of bytes in data; must be less than 64k
datathe data to store
expdesired expiration time for the value
contcontinuation to call when done (transmitting request to service) You must not call GNUNET_DHT_disconnect in this continuation
cont_clsclosure for cont

Definition at line 961 of file dht_api.c.

References GNUNET_DHT_PutHandle::cont, GNUNET_DHT_PutHandle::cont_cls, GNUNET_DHT_ClientPutMessage::desired_replication_level, GNUNET_DHT_PutHandle::dht_handle, GNUNET_DHT_PutHandle::env, GNUNET_DHT_ClientPutMessage::expiration, GNUNET_break, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_MAX_MESSAGE_SIZE, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_DHT_CLIENT_PUT, GNUNET_MQ_msg_extra, GNUNET_MQ_notify_sent(), GNUNET_MQ_send(), GNUNET_new, GNUNET_TIME_absolute_hton(), handle, handle_put_cont(), key, GNUNET_DHT_ClientPutMessage::key, LOG, GNUNET_DHT_Handle::mq, GNUNET_DHT_ClientPutMessage::options, ph, GNUNET_DHT_Handle::put_head, GNUNET_DHT_Handle::put_tail, and GNUNET_DHT_ClientPutMessage::type.

Referenced by announce_id(), delayed_put(), do_dht_put(), message_sent_cont(), perform_dht_put(), process_dht_put_content(), regex_iterator(), and run().

971 {
972  struct GNUNET_MQ_Envelope *env;
973  struct GNUNET_DHT_ClientPutMessage *put_msg;
974  size_t msize;
975  struct GNUNET_DHT_PutHandle *ph;
976 
977  msize = sizeof(struct GNUNET_DHT_ClientPutMessage) + size;
978  if ((msize >= GNUNET_MAX_MESSAGE_SIZE) ||
980  {
981  GNUNET_break(0);
982  return NULL;
983  }
984  if (NULL == handle->mq)
985  return NULL;
987  "Sending PUT for %s to DHT via %p\n",
988  GNUNET_h2s(key),
989  handle);
990  ph = GNUNET_new(struct GNUNET_DHT_PutHandle);
991  ph->dht_handle = handle;
992  ph->cont = cont;
993  ph->cont_cls = cont_cls;
995  handle->put_tail,
996  ph);
997  env = GNUNET_MQ_msg_extra(put_msg,
998  size,
1001  &handle_put_cont,
1002  ph);
1003  ph->env = env;
1004  put_msg->type = htonl((uint32_t)type);
1005  put_msg->options = htonl((uint32_t)options);
1007  put_msg->expiration = GNUNET_TIME_absolute_hton(exp);
1008  put_msg->key = *key;
1009  GNUNET_memcpy(&put_msg[1],
1010  data,
1011  size);
1012  GNUNET_MQ_send(handle->mq,
1013  env);
1014  return ph;
1015 }
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
#define GNUNET_MESSAGE_TYPE_DHT_CLIENT_PUT
Client wants to store item in DHT.
struct GNUNET_MQ_Envelope * env
Envelope from the PUT operation.
Definition: dht_api.c:72
static struct GNUNET_ATS_PerformanceHandle * ph
ATS performance handle used.
Definition: gnunet-ats.c:116
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:62
Message to insert data into the DHT, sent from clients to DHT service.
Definition: dht.h:186
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint32_t desired_replication_level
Replication level for this message.
Definition: dht.h:205
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
uint32_t type
The type of data to insert.
Definition: dht.h:195
void GNUNET_MQ_notify_sent(struct GNUNET_MQ_Envelope *ev, GNUNET_SCHEDULER_TaskCallback cb, void *cb_cls)
Call a callback once the envelope has been sent, that is, sending it can not be canceled anymore...
Definition: mq.c:772
GNUNET_SCHEDULER_TaskCallback cont
Continuation to call when done.
Definition: dht_api.c:57
void * cont_cls
Closure for cont.
Definition: dht_api.c:67
struct GNUNET_DHT_PutHandle * put_head
Head of active PUT requests.
Definition: dht_api.c:222
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_DHT_PutHandle * put_tail
Tail of active PUT requests.
Definition: dht_api.c:227
uint32_t options
Message options, actually an 'enum GNUNET_DHT_RouteOption' value.
Definition: dht.h:200
struct GNUNET_TIME_AbsoluteNBO expiration
How long should this data persist?
Definition: dht.h:210
struct GNUNET_HashCode key
The key used in the DHT.
static unsigned int size
Size of the "table".
Definition: peer.c:66
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
struct GNUNET_HashCode key
The key to store the value under.
Definition: dht.h:215
Handle to a PUT request.
Definition: dht_api.c:43
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
static void handle_put_cont(void *cls)
Process a MQ PUT transmission notification.
Definition: dht_api.c:815
uint32_t data
The data value.
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:655
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
#define LOG(kind,...)
Definition: dht_api.c:37
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◆ GNUNET_DHT_put_cancel()

void GNUNET_DHT_put_cancel ( struct GNUNET_DHT_PutHandle ph)

Cancels a DHT PUT operation.

Note that the PUT request may still go out over the network (we can't stop that); However, if the PUT has not yet been sent to the service, cancelling the PUT will stop this from happening (but there is no way for the user of this API to tell if that is the case). The only use for this API is to prevent a later call to 'cont' from GNUNET_DHT_put (i.e. because the system is shutting down).

Parameters
phput operation to cancel ('cont' will no longer be called)

Definition at line 1030 of file dht_api.c.

References GNUNET_DHT_PutHandle::dht_handle, GNUNET_DHT_PutHandle::env, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_MQ_notify_sent(), handle, GNUNET_DHT_Handle::put_head, and GNUNET_DHT_Handle::put_tail.

Referenced by cleanup(), do_dht_put(), do_disconnect(), do_shutdown(), GNUNET_DHT_disconnect(), GSF_put_done_(), handle_monitor_event(), handle_put_cont(), put_gns_record(), and shutdown_task().

1031 {
1032  struct GNUNET_DHT_Handle *handle = ph->dht_handle;
1033 
1034  if (NULL != ph->env)
1036  NULL,
1037  NULL);
1039  handle->put_tail,
1040  ph);
1041  GNUNET_free(ph);
1042 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_MQ_Envelope * env
Envelope from the PUT operation.
Definition: dht_api.c:72
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:62
Connection to the DHT service.
Definition: dht_api.c:198
void GNUNET_MQ_notify_sent(struct GNUNET_MQ_Envelope *ev, GNUNET_SCHEDULER_TaskCallback cb, void *cb_cls)
Call a callback once the envelope has been sent, that is, sending it can not be canceled anymore...
Definition: mq.c:772
struct GNUNET_DHT_PutHandle * put_head
Head of active PUT requests.
Definition: dht_api.c:222
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_DHT_PutHandle * put_tail
Tail of active PUT requests.
Definition: dht_api.c:227
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_DHT_get_start()

struct GNUNET_DHT_GetHandle* GNUNET_DHT_get_start ( struct GNUNET_DHT_Handle handle,
enum GNUNET_BLOCK_Type  type,
const struct GNUNET_HashCode key,
uint32_t  desired_replication_level,
enum GNUNET_DHT_RouteOption  options,
const void *  xquery,
size_t  xquery_size,
GNUNET_DHT_GetIterator  iter,
void *  iter_cls 
)

Perform an asynchronous GET operation on the DHT identified.

See also GNUNET_BLOCK_evaluate.

Parameters
handlehandle to the DHT service
typeexpected type of the response object
keythe key to look up
desired_replication_levelestimate of how many nearest peers this request should reach
optionsrouting options for this message
xqueryextended query data (can be NULL, depending on type)
xquery_sizenumber of bytes in xquery
iterfunction to call on each result
iter_clsclosure for iter
Returns
handle to stop the async get

Definition at line 1062 of file dht_api.c.

References GNUNET_DHT_Handle::active_requests, GNUNET_DHT_ClientGetMessage::desired_replication_level, GNUNET_DHT_GetHandle::desired_replication_level, GNUNET_DHT_GetHandle::dht_handle, gh, GNUNET_break, GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_malloc, GNUNET_MAX_MESSAGE_SIZE, GNUNET_memcpy, handle, GNUNET_DHT_GetHandle::iter, GNUNET_DHT_GetHandle::iter_cls, key, GNUNET_DHT_GetHandle::key, LOG, GNUNET_DHT_Handle::mq, options, GNUNET_DHT_GetHandle::options, send_get(), GNUNET_DHT_GetHandle::type, type, GNUNET_DHT_Handle::uid_gen, GNUNET_DHT_GetHandle::unique_id, and GNUNET_DHT_GetHandle::xquery_size.

Referenced by delayed_get(), GCD_search(), get_result_iterator(), GSF_dht_lookup_(), regex_find_path(), REGEX_INTERNAL_search(), regex_next_edge(), run(), and start_dht_request().

1071 {
1072  struct GNUNET_DHT_GetHandle *gh;
1073  size_t msize;
1074 
1075  msize = sizeof(struct GNUNET_DHT_ClientGetMessage) + xquery_size;
1076  if ((msize >= GNUNET_MAX_MESSAGE_SIZE) ||
1077  (xquery_size >= GNUNET_MAX_MESSAGE_SIZE))
1078  {
1079  GNUNET_break(0);
1080  return NULL;
1081  }
1083  "Sending query for %s to DHT %p\n",
1084  GNUNET_h2s(key),
1085  handle);
1086  gh = GNUNET_malloc(sizeof(struct GNUNET_DHT_GetHandle) +
1087  xquery_size);
1088  gh->iter = iter;
1089  gh->iter_cls = iter_cls;
1090  gh->dht_handle = handle;
1091  gh->key = *key;
1092  gh->unique_id = ++handle->uid_gen;
1093  gh->xquery_size = xquery_size;
1095  gh->type = type;
1096  gh->options = options;
1097  GNUNET_memcpy(&gh[1],
1098  xquery,
1099  xquery_size);
1101  &gh->key,
1102  gh,
1104  if (NULL != handle->mq)
1105  send_get(gh);
1106  return gh;
1107 }
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
struct GNUNET_CONTAINER_MultiHashMap * active_requests
Hash map containing the current outstanding unique GET requests (values are of type struct GNUNET_DHT...
Definition: dht_api.c:233
enum GNUNET_BLOCK_Type type
Type of the block we are looking for.
Definition: dht_api.c:123
GNUNET_DHT_GetIterator iter
Iterator to call on data receipt.
Definition: dht_api.c:82
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
uint32_t desired_replication_level
Desired replication level.
Definition: dht_api.c:118
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:92
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint64_t uid_gen
Generator for unique ids.
Definition: dht_api.c:249
void * iter_cls
Closure for iter.
Definition: dht_api.c:87
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_HashCode key
The key used in the DHT.
size_t xquery_size
Size of the extended query, allocated at the end of this struct.
Definition: dht_api.c:113
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
Handle to a GET request.
Definition: dht_api.c:78
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
Allow multiple values with the same key.
DHT GET message sent from clients to service.
Definition: dht.h:70
static struct GNUNET_TRANSPORT_HelloGetHandle * gh
Pending GNUNET_TRANSPORT_hello_get() operation.
static void send_get(struct GNUNET_DHT_GetHandle *gh)
Send GET message for a get_handle to DHT.
Definition: dht_api.c:269
enum GNUNET_DHT_RouteOption options
Routing options.
Definition: dht_api.c:128
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
struct GNUNET_HashCode key
Key that this get request is for.
Definition: dht_api.c:103
uint32_t desired_replication_level
Replication level for this message.
Definition: dht.h:84
uint64_t unique_id
Unique identifier for this request (for key collisions).
Definition: dht_api.c:108
#define GNUNET_malloc(size)
Wrapper around malloc.
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
#define LOG(kind,...)
Definition: dht_api.c:37
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◆ GNUNET_DHT_get_filter_known_results()

void GNUNET_DHT_get_filter_known_results ( struct GNUNET_DHT_GetHandle get_handle,
unsigned int  num_results,
const struct GNUNET_HashCode results 
)

Tell the DHT not to return any of the following known results to this client.

Parameters
get_handleget operation for which results should be filtered
num_resultsnumber of results to be blocked that are provided in this call (size of the results array)
resultsarray of hash codes over the data of the results to be blocked
get_handleget operation for which results should be filtered
num_resultsnumber of results to be blocked that are provided in this call (size of the results array)
resultsarray of hash codes over the 'data' of the results to be blocked

Definition at line 1121 of file dht_api.c.

References GNUNET_DHT_GetHandle::dht_handle, GNUNET_array_grow, GNUNET_memcpy, GNUNET_DHT_Handle::mq, GNUNET_DHT_GetHandle::seen_results, GNUNET_DHT_GetHandle::seen_results_end, GNUNET_DHT_GetHandle::seen_results_size, and send_get_known_results().

Referenced by GSF_dht_lookup_(), and GSF_pending_request_update_().

1124 {
1125  unsigned int needed;
1126  unsigned int had;
1127 
1128  had = get_handle->seen_results_end;
1129  needed = had + num_results;
1130  if (needed > get_handle->seen_results_size)
1131  GNUNET_array_grow(get_handle->seen_results,
1132  get_handle->seen_results_size,
1133  needed);
1134  GNUNET_memcpy(&get_handle->seen_results[get_handle->seen_results_end],
1135  results,
1136  num_results * sizeof(struct GNUNET_HashCode));
1137  get_handle->seen_results_end += num_results;
1138  if (NULL != get_handle->dht_handle->mq)
1139  send_get_known_results(get_handle,
1140  had);
1141 }
unsigned int seen_results_size
Size of the seen_results array.
Definition: dht_api.c:134
unsigned int seen_results_end
Offset into the seen_results array marking the end of the positions that are actually used...
Definition: dht_api.c:140
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:92
static void send_get_known_results(struct GNUNET_DHT_GetHandle *gh, unsigned int transmission_offset_start)
Send GET message(s) for indicating which results are already known for a get_handle to DHT...
Definition: dht_api.c:301
#define GNUNET_array_grow(arr, size, tsize)
Grow a well-typed (!) array.
A 512-bit hashcode.
struct GNUNET_HashCode * seen_results
Array of hash codes over the results that we have already seen.
Definition: dht_api.c:98
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
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◆ GNUNET_DHT_get_stop()

void GNUNET_DHT_get_stop ( struct GNUNET_DHT_GetHandle get_handle)

Stop async DHT-get.

Frees associated resources.

Parameters
get_handleGET operation to stop.
get_handlehandle to the GET operation to stop

Definition at line 1150 of file dht_api.c.

References GNUNET_DHT_Handle::active_requests, GNUNET_DHT_GetHandle::dht_handle, GNUNET_DHT_PutHandle::env, GNUNET_array_grow, GNUNET_assert, GNUNET_CONTAINER_multihashmap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET_STOP, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_YES, handle, GNUNET_DHT_ClientGetStopMessage::key, GNUNET_DHT_GetHandle::key, LOG, GNUNET_DHT_Handle::mq, GNUNET_DHT_ClientGetStopMessage::reserved, GNUNET_DHT_GetHandle::seen_results, GNUNET_DHT_GetHandle::seen_results_end, GNUNET_DHT_ClientGetStopMessage::unique_id, and GNUNET_DHT_GetHandle::unique_id.

Referenced by cancel_get(), clean_request(), cleanup(), cleanup_task(), do_shutdown(), GCD_search_stop(), get_iter(), get_result_iterator(), GNS_resolver_lookup_cancel(), GSF_dht_lookup_(), GSF_pending_request_cancel_(), handle_dht_response(), and regex_cancel_dht_get().

1151 {
1152  struct GNUNET_DHT_Handle *handle = get_handle->dht_handle;
1153 
1155  "Sending STOP for %s to DHT via %p\n",
1156  GNUNET_h2s(&get_handle->key),
1157  handle);
1158  if (NULL != handle->mq)
1159  {
1160  struct GNUNET_MQ_Envelope *env;
1161  struct GNUNET_DHT_ClientGetStopMessage *stop_msg;
1162 
1163  env = GNUNET_MQ_msg(stop_msg,
1165  stop_msg->reserved = htonl(0);
1166  stop_msg->unique_id = get_handle->unique_id;
1167  stop_msg->key = get_handle->key;
1168  GNUNET_MQ_send(handle->mq,
1169  env);
1170  }
1173  &get_handle->key,
1174  get_handle));
1175  GNUNET_array_grow(get_handle->seen_results,
1176  get_handle->seen_results_end,
1177  0);
1178  GNUNET_free(get_handle);
1179 }
struct GNUNET_CONTAINER_MultiHashMap * active_requests
Hash map containing the current outstanding unique GET requests (values are of type struct GNUNET_DHT...
Definition: dht_api.c:233
unsigned int seen_results_end
Offset into the seen_results array marking the end of the positions that are actually used...
Definition: dht_api.c:140
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:92
Connection to the DHT service.
Definition: dht_api.c:198
uint64_t unique_id
Unique ID identifying this request.
Definition: dht.h:57
#define GNUNET_array_grow(arr, size, tsize)
Grow a well-typed (!) array.
uint32_t reserved
Always zero.
Definition: dht.h:52
int GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_HashCode * seen_results
Array of hash codes over the results that we have already seen.
Definition: dht_api.c:98
#define GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET_STOP
Client wants to stop search in DHT.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
struct GNUNET_HashCode key
Key of this request.
Definition: dht.h:62
Message which indicates the DHT should cancel outstanding requests and discard any state...
Definition: dht.h:43
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_HashCode key
Key that this get request is for.
Definition: dht_api.c:103
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
uint64_t unique_id
Unique identifier for this request (for key collisions).
Definition: dht_api.c:108
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
#define GNUNET_free(ptr)
Wrapper around free.
#define LOG(kind,...)
Definition: dht_api.c:37
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◆ GNUNET_DHT_monitor_start()

struct GNUNET_DHT_MonitorHandle* GNUNET_DHT_monitor_start ( struct GNUNET_DHT_Handle handle,
enum GNUNET_BLOCK_Type  type,
const struct GNUNET_HashCode key,
GNUNET_DHT_MonitorGetCB  get_cb,
GNUNET_DHT_MonitorGetRespCB  get_resp_cb,
GNUNET_DHT_MonitorPutCB  put_cb,
void *  cb_cls 
)

Start monitoring the local DHT service.

Parameters
handleHandle to the DHT service.
typeType of blocks that are of interest.
keyKey of data of interest, NULL for all.
get_cbCallback to process monitored get messages.
get_resp_cbCallback to process monitored get response messages.
put_cbCallback to process monitored put messages.
cb_clsClosure for callbacks
Returns
Handle to stop monitoring.
Parameters
handleHandle to the DHT service.
typeType of blocks that are of interest.
keyKey of data of interest, NULL for all.
get_cbCallback to process monitored get messages.
get_resp_cbCallback to process monitored get response messages.
put_cbCallback to process monitored put messages.
cb_clsClosure for callbacks.
Returns
Handle to stop monitoring.

Definition at line 1195 of file dht_api.c.

References GNUNET_DHT_MonitorHandle::cb_cls, GNUNET_DHT_MonitorHandle::dht_handle, GNUNET_DHT_MonitorHandle::get_cb, get_cb(), GNUNET_DHT_MonitorHandle::get_resp_cb, GNUNET_CONTAINER_DLL_insert, GNUNET_new, handle, key, GNUNET_DHT_MonitorHandle::key, mh, GNUNET_DHT_Handle::monitor_head, GNUNET_DHT_Handle::monitor_tail, GNUNET_DHT_Handle::mq, put_cb(), GNUNET_DHT_MonitorHandle::put_cb, send_monitor_start(), type, and GNUNET_DHT_MonitorHandle::type.

Referenced by run().

1202 {
1203  struct GNUNET_DHT_MonitorHandle *mh;
1204 
1205  mh = GNUNET_new(struct GNUNET_DHT_MonitorHandle);
1206  mh->get_cb = get_cb;
1207  mh->get_resp_cb = get_resp_cb;
1208  mh->put_cb = put_cb;
1209  mh->cb_cls = cb_cls;
1210  mh->type = type;
1211  mh->dht_handle = handle;
1212  if (NULL != key)
1213  {
1214  mh->key = GNUNET_new(struct GNUNET_HashCode);
1215  *mh->key = *key;
1216  }
1218  handle->monitor_tail,
1219  mh);
1220  if (NULL != handle->mq)
1221  send_monitor_start(mh);
1222  return mh;
1223 }
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
static struct GNUNET_CADET_Handle * mh
Cadet handle.
Definition: gnunet-cadet.c:92
GNUNET_DHT_MonitorGetRespCB get_resp_cb
Callback for each received message of type get response.
Definition: dht_api.c:181
static int get_cb(void *cls, const struct GNUNET_HashCode *key, void *value)
Function called during GET to find matching blocks.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
GNUNET_DHT_MonitorPutCB put_cb
Callback for each received message of type put.
Definition: dht_api.c:186
GNUNET_DHT_MonitorGetCB get_cb
Callback for each received message of type get.
Definition: dht_api.c:176
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_HashCode * key
Key being looked for, NULL == all.
Definition: dht_api.c:171
A 512-bit hashcode.
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:161
struct GNUNET_DHT_MonitorHandle * monitor_head
Head of linked list of messages we would like to monitor.
Definition: dht_api.c:212
struct GNUNET_DHT_MonitorHandle * monitor_tail
Tail of linked list of messages we would like to monitor.
Definition: dht_api.c:217
struct GNUNET_HashCode key
The key used in the DHT.
static void send_monitor_start(struct GNUNET_DHT_MonitorHandle *mh)
Send GNUNET_MESSAGE_TYPE_DHT_MONITOR_START message.
Definition: dht_api.c:367
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
enum GNUNET_BLOCK_Type type
Type of block looked for.
Definition: dht_api.c:166
static int put_cb(void *cls, const struct GNUNET_HashCode *key, void *value)
Function called during PUT to detect if an equivalent block already exists.
Handle to a monitoring request.
Definition: dht_api.c:147
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
void * cb_cls
Closure for get_cb, put_cb and get_resp_cb.
Definition: dht_api.c:191
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◆ GNUNET_DHT_monitor_stop()

void GNUNET_DHT_monitor_stop ( struct GNUNET_DHT_MonitorHandle mh)

Stop monitoring.

On return handle will no longer be valid, caller must not use it anymore.

Parameters
handleThe handle to the monitor request returned by GNUNET_DHT_monitor_start().
mhThe handle to the monitor request returned by monitor_start.

On return get_handle will no longer be valid, caller must not use again!!!

Definition at line 1234 of file dht_api.c.

References GNUNET_DHT_MonitorHandle::dht_handle, GNUNET_DHT_PutHandle::env, GNUNET_DHT_MonitorStartStopMessage::filter_key, GNUNET_DHT_MonitorStartStopMessage::get, GNUNET_DHT_MonitorHandle::get_cb, GNUNET_DHT_MonitorStartStopMessage::get_resp, GNUNET_DHT_MonitorHandle::get_resp_cb, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_free_non_null, GNUNET_MESSAGE_TYPE_DHT_MONITOR_STOP, GNUNET_MQ_msg, GNUNET_MQ_send(), handle, GNUNET_DHT_MonitorHandle::key, GNUNET_DHT_MonitorStartStopMessage::key, m, GNUNET_DHT_Handle::monitor_head, GNUNET_DHT_Handle::monitor_tail, GNUNET_DHT_Handle::mq, GNUNET_DHT_MonitorStartStopMessage::put, GNUNET_DHT_MonitorHandle::put_cb, GNUNET_DHT_MonitorHandle::type, and GNUNET_DHT_MonitorStartStopMessage::type.

Referenced by cleanup_task().

1235 {
1236  struct GNUNET_DHT_Handle *handle = mh->dht_handle;
1238  struct GNUNET_MQ_Envelope *env;
1239 
1241  handle->monitor_tail,
1242  mh);
1243  env = GNUNET_MQ_msg(m,
1245  m->type = htonl(mh->type);
1246  m->get = htons(NULL != mh->get_cb);
1247  m->get_resp = htons(NULL != mh->get_resp_cb);
1248  m->put = htons(NULL != mh->put_cb);
1249  if (NULL != mh->key)
1250  {
1251  m->filter_key = htons(1);
1252  m->key = *mh->key;
1253  }
1254  GNUNET_MQ_send(handle->mq,
1255  env);
1257  GNUNET_free(mh);
1258 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
uint32_t type
The type of data desired, GNUNET_BLOCK_TYPE_ANY for all.
Definition: dht.h:285
GNUNET_DHT_MonitorGetRespCB get_resp_cb
Callback for each received message of type get response.
Definition: dht_api.c:181
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
int16_t get_resp
Flag whether to notify about GET_REPONSE messages.
Definition: dht.h:295
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
#define GNUNET_MESSAGE_TYPE_DHT_MONITOR_STOP
Stop information about transiting messages.
GNUNET_DHT_MonitorPutCB put_cb
Callback for each received message of type put.
Definition: dht_api.c:186
Connection to the DHT service.
Definition: dht_api.c:198
static struct GNUNET_ARM_MonitorHandle * m
Monitor connection with ARM.
Definition: gnunet-arm.c:99
int16_t filter_key
Flag whether to use the provided key to filter messages.
Definition: dht.h:305
int16_t put
Flag whether to notify about PUT messages.
Definition: dht.h:300
Message to request monitoring messages, clients -> DHT service.
Definition: dht.h:275
GNUNET_DHT_MonitorGetCB get_cb
Callback for each received message of type get.
Definition: dht_api.c:176
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_HashCode * key
Key being looked for, NULL == all.
Definition: dht_api.c:171
struct GNUNET_DHT_Handle * dht_handle
Main handle to this DHT api.
Definition: dht_api.c:161
struct GNUNET_DHT_MonitorHandle * monitor_head
Head of linked list of messages we would like to monitor.
Definition: dht_api.c:212
struct GNUNET_DHT_MonitorHandle * monitor_tail
Tail of linked list of messages we would like to monitor.
Definition: dht_api.c:217
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
int16_t get
Flag whether to notify about GET messages.
Definition: dht.h:290
struct GNUNET_HashCode key
The key to filter messages by.
Definition: dht.h:310
enum GNUNET_BLOCK_Type type
Type of block looked for.
Definition: dht_api.c:166
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct GNUNET_MQ_Handle * mq
Connection to DHT service.
Definition: dht_api.c:207
#define GNUNET_free(ptr)
Wrapper around free.
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