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22 * @file ats/gnunet-service-ats_addresses.c
23 * @brief ats service address management
24 * @author Matthias Wachs
25 * @author Christian Grothoff
28 #include "gnunet-service-ats_addresses.h"
29 #include "gnunet-service-ats_performance.h"
30 #include "gnunet-service-ats_normalization.h"
31 #include "gnunet-service-ats_plugins.h"
35 * NOTE: Do not change this documentation. This documentation is based on
36 * gnunet.org:/vcs/fsnsg/2014-p2p-ats.git/tech-doku/ats-tech-guide.tex
37 * use build_txt.sh to generate plaintext output
39 * 1 ATS addresses : ATS address management
41 * This ATS addresses ("addresses") component manages the addresses known to
42 * ATS service and suggests addresses to transport service when it is
43 * interested in address suggestion for a peer. ATS addresses also
44 * instantiates the bandwidth assignment mechanism (solver), notifies it
45 * about changes to addresses and forwards changes to bandwidth assignments
46 * to transport, depending if transport is interested in this change.
52 * Addresses are added by specifying peer ID, plugin, address, address length
53 * and session, if available. ATS information can be specified if available.
57 * ATS specifies a fix set of networks an address can belong to. For each
58 * network an inbound and outbound quota will be specified. The available
59 * networks and addtional helper varaibles are defined in
60 * gnunet_ats_service.h. At the moment 5 networks are defined:
61 * * GNUNET_ATS_NET_UNSPECIFIED
62 * * GNUNET_ATS_NET_LOOPBACK
63 * * GNUNET_ATS_NET_LAN
64 * * GNUNET_ATS_NET_WAN
65 * * GNUNET_ATS_NET_WLAN
67 * The total number of networks defined is stored in
68 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
69 * initializer for an int array, while GNUNET_ATS_NetworkType is an
70 * initializer for a char array containing a string description of all
75 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
76 * is loaded from ats configuration during initialization. This quota defines
77 * to total amount of inbound and outbound traffic allowed for a specific
78 * network. The configuration values used are in section ats:
79 * * "NETWORK"_QUOTA_IN = <value>
80 * * "NETWORK"_QUOTA_IN = <value>
82 * You can specify quotas by setting the <value> to a:
83 * * unrestricted: unlimited
84 * * number of bytes: e.g. 10240
85 * * fancy value: e.g. 64 Kib
87 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
88 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
90 * * GNUNET_ATS_DefaultBandwidth: 65536
91 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
92 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
94 * Details of loading quotas and default values will be described on
96 * 1.1.4 Preference values
98 * 1.2 Data structures used
100 * Addresse uses struct ATS_Address for each address. The structs are stored
101 * in a linked list and provides a pointer void *solver_information for the
102 * solver to store address specific information. It provides the int values
103 * active which is set to GNUNET_YES if the address is select for transport
104 * use and used, representing that transport service is actively using this
105 * address. Address information are stored in peer, addr, addr_len, plugin.
109 * During initialization a hashmap to store addresses is created. The quotas
110 * for all networks defined for ATS are loaded from configuration. For each
111 * network first the logic will check if the string
112 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
113 * the configured value as a fancy size and if this fails it will try to use
114 * it as a value_number. If no configuration value is found it will assign
115 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
116 * configured solver using configuration "[ats]:MODE". Current solvers are
117 * MODE_PROPORTIONAL, MODE_MLP. Interaction is done using a solver API
122 * * s_init: init the solver with required information
123 * * s_add: add a new address
124 * * s_update: update ATS values or session for an address
125 * * s_get: get prefered address for a peer
126 * * s_del: delete an address
127 * * s_pref: change preference value for a peer
128 * * s_done: shutdown solver
130 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
131 * solver which is called when bandwidth assigned to peer has changed
135 * During shutdown all addresses are freed and the solver told to shutdown
137 * 1.6 Addresses and sessions
139 * Addresses consist of the address itself and a numerical session. When a
140 * new address without a session is added it has no session, so it gets
141 * session 0 assigned. When an address with a session is added and an address
142 * object with session 0 is found, this object is updated with the session
143 * otherwise a new address object with this session assigned is created.
147 * Addresses a1,a2 with session s1, s2 are "exact" if:
148 * (a1 == a2)&&(s1 == s2)
149 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
150 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
152 * 1.7 Address management
154 * Transport service notifies ATS about changes to the addresses known to
157 * 1.7.1 Adding an address
159 * When transport learns a new address it tells ATS and ATS is telling
160 * addresses about it using GAS_address_add. If not known to addresses it
161 * creates a new address object and calls solver's s_add. ATS information are
162 * deserialized and solver is notified about the session and ATS information
165 * 1.7.2 Updating an address
167 * Addresses does an lookup up for the existing address with the given
168 * session. If disassembles included ATS information and notifies the solver
169 * using s_update about the update.
171 * 1.7.3 Deleting an address
173 * Addresses does an lookup for the exact address and session and if removes
174 * this address. If session != 0 the session is set to 0 and the address is
175 * kept. If session == 0, the addresses is removed.
177 * 1.7.4 Requesting an address suggestion
179 * The address client issues a request address message to be notified about
180 * address suggestions for a specific peer. Addresses asks the solver with
181 * s_get. If no address is available, it will not send a response, otherwise
182 * it will respond with the choosen address.
184 * 1.7.5 Address suggestions
186 * Addresses will notify the client automatically on any bandwidth_changed_cb
187 * by the solver if a address suggestion request is pending. If no address is
188 * available it will not respond at all If the client is not interested
189 * anymore, it has to cancel the address suggestion request.
191 * 1.7.6 Address lifecycle
194 * * (updated address)
197 * 1.8 Bandwidth assignment
199 * The addresses are used to perform resource allocation operations. ATS
200 * addresses takes care of instantiating the solver configured and notifies
201 * the respective solver about address changes and receives changes to the
202 * bandwidth assignment from the solver. The current bandwidth assignment is
203 * sent to transport. The specific solvers will be described in the specific
206 * 1.9 Changing peer preferences
208 * The bandwidth assigned to a peer can be influenced by setting a preference
209 * for a peer. The prefernce will be given to to the solver with s_pref which
210 * has to take care of the preference value
215 * A multihashmap to store all addresses
217 struct GNUNET_CONTAINER_MultiPeerMap *GSA_addresses;
221 * Update statistic on number of addresses.
224 update_addresses_stat ()
226 GNUNET_STATISTICS_set (GSA_stats,
228 GNUNET_CONTAINER_multipeermap_size (GSA_addresses),
234 * Disassemble ATS information and update performance information in address
236 * Updates existing information and adds new information
238 * @param dest destination address
239 * @param update source ATS information
240 * @param update_count number of ATS information in @a update
241 * @param delta_dest ats performance information which were updated
242 * including previous value
243 * @param delta_count number of ATS information in the @a delta_dest
244 * @return #GNUNET_YES if address was address updated, GNUNET_NO otherwise
247 disassemble_ats_information (struct ATS_Address *dest,
248 const struct GNUNET_ATS_Information *update,
249 uint32_t update_count,
250 struct GNUNET_ATS_Information **delta_dest,
251 uint32_t *delta_count)
257 struct GNUNET_ATS_Information add_atsi[update_count];
258 struct GNUNET_ATS_Information delta_atsi[update_count];
259 struct GNUNET_ATS_Information *tmp_atsi;
260 uint32_t add_atsi_count;
261 uint32_t delta_atsi_count;
265 delta_atsi_count = 0;
267 if (0 == update_count)
270 if (NULL == dest->atsi)
272 /* Create performance information */
274 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
275 dest->atsi_count = update_count;
278 update_count * sizeof(struct GNUNET_ATS_Information));
280 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
281 for (c1 = 0; c1 < update_count; c1++)
283 (*delta_dest)[c1].type = update[c1].type;
284 (*delta_dest)[c1].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
286 (*delta_count) = update_count;
290 for (c1 = 0; c1 < update_count; c1++)
292 /* Update existing performance information */
294 for (c2 = 0; c2 < dest->atsi_count; c2++)
296 if (update[c1].type == dest->atsi[c2].type)
298 if (update[c1].value != dest->atsi[c2].value)
300 /* Save previous value in delta */
301 delta_atsi[delta_atsi_count] = dest->atsi[c2];
304 dest->atsi[c2].value = update[c1].value;
311 if (GNUNET_NO == found)
313 add_atsi[add_atsi_count] = update[c1];
315 delta_atsi[delta_atsi_count].type = update[c1].type;
316 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
321 if (add_atsi_count > 0)
323 /* Extend ats performance information */
325 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
326 (sizeof (struct GNUNET_ATS_Information)));
327 memcpy (tmp_atsi, dest->atsi,
328 dest->atsi_count * sizeof(struct GNUNET_ATS_Information));
329 memcpy (&tmp_atsi[dest->atsi_count], add_atsi,
330 add_atsi_count * sizeof(struct GNUNET_ATS_Information));
331 GNUNET_free (dest->atsi);
332 dest->atsi = tmp_atsi;
333 dest->atsi_count = dest->atsi_count + add_atsi_count;
337 if (delta_atsi_count > 0)
341 GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
342 memcpy ((*delta_dest), delta_atsi,
343 delta_atsi_count * sizeof(struct GNUNET_ATS_Information));
344 (*delta_count) = delta_atsi_count;
352 * Free the given address
354 * @param addr address to destroy
357 free_address (struct ATS_Address *addr)
359 GNUNET_CONTAINER_multipeermap_remove (GSA_addresses,
362 update_addresses_stat ();
363 GAS_plugin_delete_address (addr);
364 GAS_performance_notify_all_clients (&addr->peer,
370 GNUNET_BANDWIDTH_ZERO,
371 GNUNET_BANDWIDTH_ZERO);
372 GNUNET_free (addr->plugin);
373 GNUNET_free_non_null (addr->atsi);
379 * Create a ATS_address with the given information
382 * @param plugin_name plugin
383 * @param plugin_addr address
384 * @param plugin_addr_len address length
385 * @param local_address_info additional local info for the address
386 * @param session_id session identifier, can never be 0
387 * @return the ATS_Address
389 static struct ATS_Address *
390 create_address (const struct GNUNET_PeerIdentity *peer,
391 const char *plugin_name,
392 const void *plugin_addr,
393 size_t plugin_addr_len,
394 uint32_t local_address_info,
397 struct ATS_Address *aa;
401 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
403 aa->addr_len = plugin_addr_len;
408 aa->plugin = GNUNET_strdup (plugin_name);
409 aa->session_id = session_id;
410 aa->local_address_info = local_address_info;
412 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1++)
414 aa->atsin[c1].avg_queue_index = 0;
415 aa->atsin[c1].norm = DEFAULT_REL_QUALITY;
416 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
417 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
424 * Closure for #find_address_cb()
426 struct FindAddressContext
429 * Session Id to look for.
434 * Where to store matching address result.
436 struct ATS_Address *exact_address;
442 * Find session matching given session ID.
444 * @param cls a `struct FindAddressContext`
446 * @param value the address to compare with
447 * @return #GNUNET_YES to continue, #GNUNET_NO if address is found
450 find_address_cb (void *cls,
451 const struct GNUNET_PeerIdentity *key,
454 struct FindAddressContext *fac = cls;
455 struct ATS_Address *aa = value;
457 if (aa->session_id == fac->session_id)
459 fac->exact_address = aa;
467 * Find the exact address
470 * @param session_id session id, can never be 0
471 * @return an ATS_address or NULL
473 static struct ATS_Address *
474 find_exact_address (const struct GNUNET_PeerIdentity *peer,
477 struct FindAddressContext fac;
479 fac.exact_address = NULL;
480 fac.session_id = session_id;
481 GNUNET_CONTAINER_multipeermap_get_multiple (GSA_addresses,
483 &find_address_cb, &fac);
484 return fac.exact_address;
489 * Extract an ATS performance info from an address
491 * @param address the address
492 * @param type the type to extract in HBO
493 * @return the value in HBO or #GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
496 get_performance_info (struct ATS_Address *address,
501 if ((NULL == address->atsi) || (0 == address->atsi_count))
502 return GNUNET_ATS_VALUE_UNDEFINED;
504 for (c1 = 0; c1 < address->atsi_count; c1++)
506 if (ntohl (address->atsi[c1].type) == type)
507 return ntohl (address->atsi[c1].value);
509 return GNUNET_ATS_VALUE_UNDEFINED;
514 * Add a new address for a peer.
517 * @param plugin_name transport plugin name
518 * @param plugin_addr plugin address
519 * @param plugin_addr_len length of the plugin address in @a plugin_addr
520 * @param local_address_info the local address for the address
521 * @param session_id session id, can be 0
522 * @param atsi performance information for this address
523 * @param atsi_count number of performance information contained in @a atsi
526 GAS_addresses_add (const struct GNUNET_PeerIdentity *peer,
527 const char *plugin_name,
528 const void *plugin_addr,
529 size_t plugin_addr_len,
530 uint32_t local_address_info,
532 const struct GNUNET_ATS_Information *atsi,
535 struct ATS_Address *new_address;
536 struct GNUNET_ATS_Information *atsi_delta;
537 uint32_t atsi_delta_count;
540 if (NULL != find_exact_address (peer, session_id))
545 new_address = create_address (peer,
552 disassemble_ats_information (new_address,
556 GNUNET_free_non_null (atsi_delta);
557 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
558 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
559 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
561 /* Add a new address */
562 new_address->t_added = GNUNET_TIME_absolute_get();
563 new_address->t_last_activity = GNUNET_TIME_absolute_get();
564 GNUNET_assert(GNUNET_OK ==
565 GNUNET_CONTAINER_multipeermap_put (GSA_addresses,
568 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
569 update_addresses_stat ();
570 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
571 "Adding new address for peer `%s' slot %u\n",
574 /* Tell solver about new address */
575 GAS_plugin_new_address (new_address,
579 /* Notify performance clients about new address */
580 GAS_performance_notify_all_clients (&new_address->peer,
583 new_address->addr_len,
586 new_address->atsi_count,
587 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_out),
588 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_in));
593 * Update an address with new performance information for a peer.
596 * @param session_id session id, never 0
597 * @param atsi performance information for this address
598 * @param atsi_count number of performance information contained in @a atsi
601 GAS_addresses_update (const struct GNUNET_PeerIdentity *peer,
603 const struct GNUNET_ATS_Information *atsi,
606 struct ATS_Address *aa;
607 struct GNUNET_ATS_Information *atsi_delta;
608 uint32_t atsi_delta_count;
610 /* Get existing address */
611 aa = find_exact_address (peer,
618 if (NULL == aa->solver_information)
623 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
624 "Received ADDRESS_UPDATE for peer `%s' slot %u\n",
626 (unsigned int) session_id);
629 aa->t_last_activity = GNUNET_TIME_absolute_get();
631 atsi_delta_count = 0;
633 disassemble_ats_information (aa, atsi,
638 /* Notify performance clients about updated address */
639 GAS_performance_notify_all_clients (&aa->peer,
646 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
647 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
649 GAS_normalization_update_property (aa,
653 GNUNET_free_non_null (atsi_delta);
658 * Remove an address for a peer.
661 * @param session_id session id, can never be 0
664 GAS_addresses_destroy (const struct GNUNET_PeerIdentity *peer,
667 struct ATS_Address *ea;
669 /* Get existing address */
670 ea = find_exact_address (peer,
677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
678 "Received ADDRESS_DESTROYED for peer `%s' session %u\n",
686 * Initialize address subsystem. The addresses subsystem manages the addresses
687 * known and current performance information. It has a solver component
688 * responsible for the resource allocation. It tells the solver about changes
689 * and receives updates when the solver changes the resource allocation.
691 * @param server handle to our server
694 GAS_addresses_init (struct GNUNET_SERVER_Handle *server)
696 GSA_addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
697 update_addresses_stat ();
702 * Destroy all addresses iterator
705 * @param key peer identity (unused)
706 * @param value the 'struct ATS_Address' to free
707 * @return #GNUNET_OK (continue to iterate)
710 destroy_all_address_it (void *cls,
711 const struct GNUNET_PeerIdentity *key,
714 struct ATS_Address *aa = value;
722 * Remove all addresses
725 GAS_addresses_destroy_all ()
727 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
728 "Destroying all addresses\n");
730 GNUNET_CONTAINER_multipeermap_size (GSA_addresses))
732 GAS_plugin_solver_lock ();
733 GNUNET_CONTAINER_multipeermap_iterate (GSA_addresses,
734 &destroy_all_address_it,
736 GAS_plugin_solver_unlock ();
741 * Shutdown address subsystem.
744 GAS_addresses_done ()
746 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
747 "Shutting down addresses\n");
748 GAS_addresses_destroy_all ();
749 GNUNET_CONTAINER_multipeermap_destroy (GSA_addresses);
750 GSA_addresses = NULL;
755 * Closure for #peerinfo_it().
757 struct PeerInfoIteratorContext
760 * Function to call for each address.
762 GNUNET_ATS_PeerInfo_Iterator it;
772 * Iterator to iterate over a peer's addresses
774 * @param cls a `struct PeerInfoIteratorContext`
775 * @param key the peer id
776 * @param value the `struct ATS_address`
777 * @return #GNUNET_OK to continue
780 peerinfo_it (void *cls,
781 const struct GNUNET_PeerIdentity *key,
784 struct PeerInfoIteratorContext *pi_ctx = cls;
785 struct ATS_Address *addr = value;
787 pi_ctx->it (pi_ctx->it_cls,
793 addr->atsi, addr->atsi_count,
794 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_out),
795 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_in));
801 * Return information all peers currently known to ATS
803 * @param peer the respective peer, NULL for 'all' peers
804 * @param pi_it the iterator to call for every peer
805 * @param pi_it_cls the closure for @a pi_it
808 GAS_addresses_get_peer_info (const struct GNUNET_PeerIdentity *peer,
809 GNUNET_ATS_PeerInfo_Iterator pi_it,
812 struct PeerInfoIteratorContext pi_ctx;
816 /* does not make sense without callback */
820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
821 "Returning information for %s from a total of %u known addresses\n",
825 (unsigned int) GNUNET_CONTAINER_multipeermap_size (GSA_addresses));
827 pi_ctx.it_cls = pi_it_cls;
829 GNUNET_CONTAINER_multipeermap_iterate (GSA_addresses,
833 GNUNET_CONTAINER_multipeermap_get_multiple (GSA_addresses,
835 &peerinfo_it, &pi_ctx);
840 GNUNET_BANDWIDTH_ZERO,
841 GNUNET_BANDWIDTH_ZERO);
846 * Information we need for the callbacks to return a list of addresses
847 * back to the client.
849 struct AddressIteration
852 * Actual handle to the client.
854 struct GNUNET_SERVER_Client *client;
857 * Are we sending all addresses, or only those that are active?
862 * Which ID should be included in the response?
870 * Send a #GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE with the
871 * given address details to the client identified in @a ai.
873 * @param ai our address information context (identifies the client)
874 * @param id the peer id this address is for
875 * @param plugin_name name of the plugin that supports this address
876 * @param plugin_addr address
877 * @param plugin_addr_len length of @a plugin_addr
878 * @param active #GNUNET_YES if this address is actively used
879 * @param atsi ats performance information
880 * @param atsi_count number of ats performance elements in @a atsi
881 * @param bandwidth_out current outbound bandwidth assigned to address
882 * @param bandwidth_in current inbound bandwidth assigned to address
885 transmit_req_addr (struct AddressIteration *ai,
886 const struct GNUNET_PeerIdentity *id,
887 const char *plugin_name,
888 const void *plugin_addr,
889 size_t plugin_addr_len,
891 const struct GNUNET_ATS_Information *atsi,
893 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
894 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
897 struct GNUNET_ATS_Information *atsp;
898 struct PeerInformationMessage *msg;
900 size_t plugin_name_length;
902 struct GNUNET_SERVER_NotificationContext *nc;
904 if (NULL != plugin_name)
905 plugin_name_length = strlen (plugin_name) + 1;
907 plugin_name_length = 0;
908 msize = sizeof (struct PeerInformationMessage) +
909 atsi_count * sizeof (struct GNUNET_ATS_Information) +
910 plugin_addr_len + plugin_name_length;
911 char buf[msize] GNUNET_ALIGN;
913 GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
914 GNUNET_assert (atsi_count <
915 GNUNET_SERVER_MAX_MESSAGE_SIZE /
916 sizeof (struct GNUNET_ATS_Information));
917 msg = (struct PeerInformationMessage *) buf;
918 msg->header.size = htons (msize);
919 msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE);
920 msg->ats_count = htonl (atsi_count);
921 msg->id = htonl (ai->id);
925 memset (&msg->peer, '\0', sizeof (struct GNUNET_PeerIdentity));
926 msg->address_length = htons (plugin_addr_len);
927 msg->address_active = ntohl (active);
928 msg->plugin_name_length = htons (plugin_name_length);
929 msg->bandwidth_out = bandwidth_out;
930 msg->bandwidth_in = bandwidth_in;
931 atsp = (struct GNUNET_ATS_Information *) &msg[1];
932 memcpy (atsp, atsi, sizeof (struct GNUNET_ATS_Information) * atsi_count);
933 addrp = (char *) &atsp[atsi_count];
934 if (NULL != plugin_addr)
935 memcpy (addrp, plugin_addr, plugin_addr_len);
936 if (NULL != plugin_name)
937 strcpy (&addrp[plugin_addr_len], plugin_name);
938 nc = *GNUNET_SERVER_client_get_user_context (ai->client,
939 struct GNUNET_SERVER_NotificationContext *);
945 GNUNET_SERVER_notification_context_unicast (nc,
953 * Iterator for #GAS_addresses_get_peer_info(), called with peer-specific
954 * information to be passed back to the client.
956 * @param cls closure with our `struct AddressIteration *`
957 * @param id the peer id
958 * @param plugin_name plugin name
959 * @param plugin_addr address
960 * @param plugin_addr_len length of @a plugin_addr
961 * @param active is address actively used
962 * @param atsi ats performance information
963 * @param atsi_count number of ats performance elements in @a atsi
964 * @param bandwidth_out current outbound bandwidth assigned to address
965 * @param bandwidth_in current inbound bandwidth assigned to address
968 req_addr_peerinfo_it (void *cls,
969 const struct GNUNET_PeerIdentity *id,
970 const char *plugin_name,
971 const void *plugin_addr,
972 size_t plugin_addr_len,
974 const struct GNUNET_ATS_Information *atsi,
976 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
977 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
979 struct AddressIteration *ai = cls;
982 (NULL == plugin_name) &&
983 (NULL == plugin_addr) )
985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
986 "Address iteration done for one peer\n");
989 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
990 "Callback for %s peer `%s' plugin `%s' BW out %u, BW in %u\n",
991 (active == GNUNET_YES) ? "ACTIVE" : "INACTIVE",
994 (unsigned int) ntohl (bandwidth_out.value__),
995 (unsigned int) ntohl (bandwidth_in.value__));
996 /* Transmit result (either if address is active, or if
997 client wanted all addresses) */
998 if ( (GNUNET_YES != ai->all) &&
999 (GNUNET_YES != active))
1001 transmit_req_addr (ai,
1004 plugin_addr, plugin_addr_len,
1014 * Handle 'address list request' messages from clients.
1016 * @param cls unused, NULL
1017 * @param client client that sent the request
1018 * @param message the request message
1021 GAS_handle_request_address_list (void *cls,
1022 struct GNUNET_SERVER_Client *client,
1023 const struct GNUNET_MessageHeader *message)
1025 struct AddressIteration ai;
1026 const struct AddressListRequestMessage *alrm;
1027 struct GNUNET_PeerIdentity allzeros;
1029 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1030 "Received ADDRESSLIST_REQUEST message\n");
1031 alrm = (const struct AddressListRequestMessage *) message;
1032 ai.all = ntohl (alrm->all);
1033 ai.id = ntohl (alrm->id);
1038 sizeof (struct GNUNET_PeerIdentity));
1039 if (0 == memcmp (&alrm->peer,
1041 sizeof (struct GNUNET_PeerIdentity)))
1043 /* Return addresses for all peers */
1044 GAS_addresses_get_peer_info (NULL,
1045 &req_addr_peerinfo_it,
1050 /* Return addresses for a specific peer */
1051 GAS_addresses_get_peer_info (&alrm->peer,
1052 &req_addr_peerinfo_it,
1055 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1056 "Finished handling `%s' message\n",
1057 "ADDRESSLIST_REQUEST");
1058 transmit_req_addr (&ai,
1062 GNUNET_BANDWIDTH_ZERO,
1063 GNUNET_BANDWIDTH_ZERO);
1064 GNUNET_SERVER_receive_done (client,
1070 /* end of gnunet-service-ats_addresses.c */