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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_ats_service.h"
29 #include "gnunet-service-ats.h"
30 #include "gnunet-service-ats_addresses.h"
31 #include "gnunet-service-ats_normalization.h"
32 #include "gnunet-service-ats_performance.h"
33 #include "gnunet-service-ats_plugins.h"
34 #include "gnunet-service-ats_scheduling.h"
35 #include "gnunet-service-ats_reservations.h"
39 * NOTE: Do not change this documentation. This documentation is based on
40 * gnunet.org:/vcs/fsnsg/2014-p2p-ats.git/tech-doku/ats-tech-guide.tex
41 * use build_txt.sh to generate plaintext output
43 * 1 ATS addresses : ATS address management
45 * This ATS addresses ("addresses") component manages the addresses known to
46 * ATS service and suggests addresses to transport service when it is
47 * interested in address suggestion for a peer. ATS addresses also
48 * instantiates the bandwidth assignment mechanism (solver), notifies it
49 * about changes to addresses and forwards changes to bandwidth assignments
50 * to transport, depending if transport is interested in this change.
56 * Addresses are added by specifying peer ID, plugin, address, address length
57 * and session, if available. ATS information can be specified if available.
61 * ATS specifies a fix set of networks an address can belong to. For each
62 * network an inbound and outbound quota will be specified. The available
63 * networks and addtional helper varaibles are defined in
64 * gnunet_ats_service.h. At the moment 5 networks are defined:
65 * * GNUNET_ATS_NET_UNSPECIFIED
66 * * GNUNET_ATS_NET_LOOPBACK
67 * * GNUNET_ATS_NET_LAN
68 * * GNUNET_ATS_NET_WAN
69 * * GNUNET_ATS_NET_WLAN
71 * The total number of networks defined is stored in
72 * GNUNET_ATS_NetworkTypeCount GNUNET_ATS_NetworkType can be used array
73 * initializer for an int array, while GNUNET_ATS_NetworkType is an
74 * initializer for a char array containing a string description of all
79 * An inbound and outbound quota for each of the networks mentioned in 1.1.2
80 * is loaded from ats configuration during initialization. This quota defines
81 * to total amount of inbound and outbound traffic allowed for a specific
82 * network. The configuration values used are in section ats:
83 * * "NETWORK"_QUOTA_IN = <value>
84 * * "NETWORK"_QUOTA_IN = <value>
86 * You can specify quotas by setting the <value> to a:
87 * * unrestricted: unlimited
88 * * number of bytes: e.g. 10240
89 * * fancy value: e.g. 64 Kib
91 * unlimited is defined as GNUNET_ATS_MaxBandwidthString and equivalent to
92 * the value GNUNET_ATS_MaxBandwidth Important predefined values for quotas
94 * * GNUNET_ATS_DefaultBandwidth: 65536
95 * * GNUNET_ATS_MaxBandwidth: UINT32_MAX
96 * * GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT: 1024
98 * Details of loading quotas and default values will be described on
100 * 1.1.4 Preference values
102 * 1.2 Data structures used
104 * Addresse uses struct ATS_Address for each address. The structs are stored
105 * in a linked list and provides a pointer void *solver_information for the
106 * solver to store address specific information. It provides the int values
107 * active which is set to GNUNET_YES if the address is select for transport
108 * use and used, representing that transport service is actively using this
109 * address. Address information are stored in peer, addr, addr_len, plugin.
113 * During initialization a hashmap to store addresses is created. The quotas
114 * for all networks defined for ATS are loaded from configuration. For each
115 * network first the logic will check if the string
116 * GNUNET_ATS_MaxBandwidthString is configured, if not it will try to convert
117 * the configured value as a fancy size and if this fails it will try to use
118 * it as a value_number. If no configuration value is found it will assign
119 * GNUNET_ATS_DefaultBandwidth. The most important step is to load the
120 * configured solver using configuration "[ats]:MODE". Current solvers are
121 * MODE_PROPORTIONAL, MODE_MLP. Interaction is done using a solver API
126 * * s_init: init the solver with required information
127 * * s_add: add a new address
128 * * s_update: update ATS values or session for an address
129 * * s_get: get prefered address for a peer
130 * * s_del: delete an address
131 * * s_pref: change preference value for a peer
132 * * s_done: shutdown solver
134 * Callbacks: addresses provides a bandwidth_changed_cb callback to the
135 * solver which is called when bandwidth assigned to peer has changed
139 * During shutdown all addresses are freed and the solver told to shutdown
141 * 1.6 Addresses and sessions
143 * Addresses consist of the address itself and a numerical session. When a
144 * new address without a session is added it has no session, so it gets
145 * session 0 assigned. When an address with a session is added and an address
146 * object with session 0 is found, this object is updated with the session
147 * otherwise a new address object with this session assigned is created.
151 * Addresses a1,a2 with session s1, s2 are "exact" if:
152 * (a1 == a2)&&(s1 == s2)
153 * Addresses a1,a2 with session s1, s2 are "equivalent" if:
154 * (a1 == a2)&&((s1 == s2)||(s1 == 0)||(s2 == 0)
156 * 1.7 Address management
158 * Transport service notifies ATS about changes to the addresses known to
161 * 1.7.1 Adding an address
163 * When transport learns a new address it tells ATS and ATS is telling
164 * addresses about it using GAS_address_add. If not known to addresses it
165 * creates a new address object and calls solver's s_add. ATS information are
166 * deserialized and solver is notified about the session and ATS information
169 * 1.7.2 Updating an address
171 * Addresses does an lookup up for the existing address with the given
172 * session. If disassembles included ATS information and notifies the solver
173 * using s_update about the update.
175 * 1.7.3 Deleting an address
177 * Addresses does an lookup for the exact address and session and if removes
178 * this address. If session != 0 the session is set to 0 and the address is
179 * kept. If session == 0, the addresses is removed.
181 * 1.7.4 Requesting an address suggestion
183 * The address client issues a request address message to be notified about
184 * address suggestions for a specific peer. Addresses asks the solver with
185 * s_get. If no address is available, it will not send a response, otherwise
186 * it will respond with the choosen address.
188 * 1.7.5 Address suggestions
190 * Addresses will notify the client automatically on any bandwidth_changed_cb
191 * by the solver if a address suggestion request is pending. If no address is
192 * available it will not respond at all If the client is not interested
193 * anymore, it has to cancel the address suggestion request.
195 * 1.7.6 Address lifecycle
198 * * (updated address)
201 * 1.8 Bandwidth assignment
203 * The addresses are used to perform resource allocation operations. ATS
204 * addresses takes care of instantiating the solver configured and notifies
205 * the respective solver about address changes and receives changes to the
206 * bandwidth assignment from the solver. The current bandwidth assignment is
207 * sent to transport. The specific solvers will be described in the specific
210 * 1.9 Changing peer preferences
212 * The bandwidth assigned to a peer can be influenced by setting a preference
213 * for a peer. The prefernce will be given to to the solver with s_pref which
214 * has to take care of the preference value
219 * A multihashmap to store all addresses
221 struct GNUNET_CONTAINER_MultiPeerMap *GSA_addresses;
224 * Context for sending messages to performance clients without PIC.
226 static struct GNUNET_SERVER_NotificationContext *nc;
230 * Update statistic on number of addresses.
233 update_addresses_stat ()
235 GNUNET_STATISTICS_set (GSA_stats,
237 GNUNET_CONTAINER_multipeermap_size (GSA_addresses),
243 * Disassemble ATS information and update performance information in address
245 * Updates existing information and adds new information
247 * @param dest destination address
248 * @param update source ATS information
249 * @param update_count number of ATS information in @a update
250 * @param delta_dest ats performance information which were updated
251 * including previous value
252 * @param delta_count number of ATS information in the @a delta_dest
253 * @return #GNUNET_YES if address was address updated, GNUNET_NO otherwise
256 disassemble_ats_information (struct ATS_Address *dest,
257 const struct GNUNET_ATS_Information *update,
258 uint32_t update_count,
259 struct GNUNET_ATS_Information **delta_dest,
260 uint32_t *delta_count)
266 struct GNUNET_ATS_Information add_atsi[update_count];
267 struct GNUNET_ATS_Information delta_atsi[update_count];
268 struct GNUNET_ATS_Information *tmp_atsi;
269 uint32_t add_atsi_count;
270 uint32_t delta_atsi_count;
274 delta_atsi_count = 0;
276 if (0 == update_count)
279 if (NULL == dest->atsi)
281 /* Create performance information */
283 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
284 dest->atsi_count = update_count;
287 update_count * sizeof(struct GNUNET_ATS_Information));
289 GNUNET_malloc (update_count * sizeof (struct GNUNET_ATS_Information));
290 for (c1 = 0; c1 < update_count; c1++)
292 (*delta_dest)[c1].type = update[c1].type;
293 (*delta_dest)[c1].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
295 (*delta_count) = update_count;
299 for (c1 = 0; c1 < update_count; c1++)
301 /* Update existing performance information */
303 for (c2 = 0; c2 < dest->atsi_count; c2++)
305 if (update[c1].type == dest->atsi[c2].type)
307 if (update[c1].value != dest->atsi[c2].value)
309 /* Save previous value in delta */
310 delta_atsi[delta_atsi_count] = dest->atsi[c2];
313 dest->atsi[c2].value = update[c1].value;
320 if (GNUNET_NO == found)
322 add_atsi[add_atsi_count] = update[c1];
324 delta_atsi[delta_atsi_count].type = update[c1].type;
325 delta_atsi[delta_atsi_count].value = htonl (GNUNET_ATS_VALUE_UNDEFINED);
330 if (add_atsi_count > 0)
332 /* Extend ats performance information */
334 tmp_atsi = GNUNET_malloc ((dest->atsi_count + add_atsi_count) *
335 (sizeof (struct GNUNET_ATS_Information)));
336 memcpy (tmp_atsi, dest->atsi,
337 dest->atsi_count * sizeof(struct GNUNET_ATS_Information));
338 memcpy (&tmp_atsi[dest->atsi_count], add_atsi,
339 add_atsi_count * sizeof(struct GNUNET_ATS_Information));
340 GNUNET_free (dest->atsi);
341 dest->atsi = tmp_atsi;
342 dest->atsi_count = dest->atsi_count + add_atsi_count;
346 if (delta_atsi_count > 0)
350 GNUNET_malloc (delta_atsi_count * sizeof (struct GNUNET_ATS_Information));
351 memcpy ((*delta_dest), delta_atsi,
352 delta_atsi_count * sizeof(struct GNUNET_ATS_Information));
353 (*delta_count) = delta_atsi_count;
361 * Free the given address
363 * @param addr address to destroy
366 free_address (struct ATS_Address *addr)
368 GNUNET_CONTAINER_multipeermap_remove (GSA_addresses,
371 update_addresses_stat ();
372 GAS_plugin_delete_address (addr);
373 GAS_performance_notify_all_clients (&addr->peer,
379 GNUNET_BANDWIDTH_ZERO,
380 GNUNET_BANDWIDTH_ZERO);
381 GNUNET_free (addr->plugin);
382 GNUNET_free_non_null (addr->atsi);
388 * Create a ATS_address with the given information
391 * @param plugin_name plugin
392 * @param plugin_addr address
393 * @param plugin_addr_len address length
394 * @param local_address_info additional local info for the address
395 * @param session_id session identifier, can never be 0
396 * @return the ATS_Address
398 static struct ATS_Address *
399 create_address (const struct GNUNET_PeerIdentity *peer,
400 const char *plugin_name,
401 const void *plugin_addr,
402 size_t plugin_addr_len,
403 uint32_t local_address_info,
406 struct ATS_Address *aa;
410 aa = GNUNET_malloc (sizeof (struct ATS_Address) + plugin_addr_len);
412 aa->addr_len = plugin_addr_len;
417 aa->plugin = GNUNET_strdup (plugin_name);
418 aa->session_id = session_id;
419 aa->local_address_info = local_address_info;
421 for (c1 = 0; c1 < GNUNET_ATS_QualityPropertiesCount; c1++)
423 aa->atsin[c1].avg_queue_index = 0;
424 for (c2 = 0; c2 < GAS_normalization_queue_length; c2++)
425 aa->atsin[c1].atsi_abs[c2] = GNUNET_ATS_VALUE_UNDEFINED;
432 * Closure for #find_address_cb()
434 struct FindAddressContext
437 * Session Id to look for.
442 * Where to store matching address result.
444 struct ATS_Address *exact_address;
450 * Find session matching given session ID.
452 * @param cls a `struct FindAddressContext`
454 * @param value the address to compare with
455 * @return #GNUNET_YES to continue, #GNUNET_NO if address is found
458 find_address_cb (void *cls,
459 const struct GNUNET_PeerIdentity *key,
462 struct FindAddressContext *fac = cls;
463 struct ATS_Address *aa = value;
465 if (aa->session_id == fac->session_id)
467 fac->exact_address = aa;
475 * Find the exact address
478 * @param session_id session id, can never be 0
479 * @return an ATS_address or NULL
481 static struct ATS_Address *
482 find_exact_address (const struct GNUNET_PeerIdentity *peer,
485 struct FindAddressContext fac;
487 fac.exact_address = NULL;
488 fac.session_id = session_id;
489 GNUNET_CONTAINER_multipeermap_get_multiple (GSA_addresses,
491 &find_address_cb, &fac);
492 return fac.exact_address;
497 * Extract an ATS performance info from an address
499 * @param address the address
500 * @param type the type to extract in HBO
501 * @return the value in HBO or #GNUNET_ATS_VALUE_UNDEFINED in HBO if value does not exist
504 get_performance_info (struct ATS_Address *address,
509 if ((NULL == address->atsi) || (0 == address->atsi_count))
510 return GNUNET_ATS_VALUE_UNDEFINED;
512 for (c1 = 0; c1 < address->atsi_count; c1++)
514 if (ntohl (address->atsi[c1].type) == type)
515 return ntohl (address->atsi[c1].value);
517 return GNUNET_ATS_VALUE_UNDEFINED;
522 * Add a new address for a peer.
525 * @param plugin_name transport plugin name
526 * @param plugin_addr plugin address
527 * @param plugin_addr_len length of the plugin address in @a plugin_addr
528 * @param local_address_info the local address for the address
529 * @param session_id session id, can be 0
530 * @param atsi performance information for this address
531 * @param atsi_count number of performance information contained in @a atsi
534 GAS_addresses_add (const struct GNUNET_PeerIdentity *peer,
535 const char *plugin_name,
536 const void *plugin_addr,
537 size_t plugin_addr_len,
538 uint32_t local_address_info,
540 const struct GNUNET_ATS_Information *atsi,
543 struct ATS_Address *new_address;
544 struct GNUNET_ATS_Information *atsi_delta;
545 uint32_t atsi_delta_count;
548 if (NULL != find_exact_address (peer, session_id))
553 new_address = create_address (peer,
560 disassemble_ats_information (new_address,
564 GNUNET_free_non_null (atsi_delta);
565 addr_net = get_performance_info (new_address, GNUNET_ATS_NETWORK_TYPE);
566 if (GNUNET_ATS_VALUE_UNDEFINED == addr_net)
567 addr_net = GNUNET_ATS_NET_UNSPECIFIED;
569 /* Add a new address */
570 new_address->t_added = GNUNET_TIME_absolute_get();
571 new_address->t_last_activity = GNUNET_TIME_absolute_get();
572 GNUNET_assert(GNUNET_OK ==
573 GNUNET_CONTAINER_multipeermap_put (GSA_addresses,
576 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
577 update_addresses_stat ();
578 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
579 "Adding new address for peer `%s' slot %u\n",
582 /* Tell solver about new address */
583 GAS_plugin_new_address (new_address,
587 /* Notify performance clients about new address */
588 GAS_performance_notify_all_clients (&new_address->peer,
591 new_address->addr_len,
594 new_address->atsi_count,
595 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_out),
596 GNUNET_BANDWIDTH_value_init (new_address->assigned_bw_in));
601 * Update an address with new performance information for a peer.
604 * @param session_id session id, never 0
605 * @param atsi performance information for this address
606 * @param atsi_count number of performance information contained in @a atsi
609 GAS_addresses_update (const struct GNUNET_PeerIdentity *peer,
611 const struct GNUNET_ATS_Information *atsi,
614 struct ATS_Address *aa;
615 struct GNUNET_ATS_Information *atsi_delta;
616 uint32_t atsi_delta_count;
618 /* Get existing address */
619 aa = find_exact_address (peer,
626 if (NULL == aa->solver_information)
631 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
632 "Received ADDRESS_UPDATE for peer `%s' slot %u\n",
634 (unsigned int) session_id);
637 aa->t_last_activity = GNUNET_TIME_absolute_get();
639 atsi_delta_count = 0;
641 disassemble_ats_information (aa, atsi,
646 /* Notify performance clients about updated address */
647 GAS_performance_notify_all_clients (&aa->peer,
654 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_out),
655 GNUNET_BANDWIDTH_value_init (aa->assigned_bw_in));
657 GAS_plugin_update_address (aa,
661 GNUNET_free_non_null (atsi_delta);
666 * Remove an address for a peer.
669 * @param session_id session id, can never be 0
672 GAS_addresses_destroy (const struct GNUNET_PeerIdentity *peer,
675 struct ATS_Address *ea;
677 /* Get existing address */
678 ea = find_exact_address (peer,
685 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
686 "Received ADDRESS_DESTROYED for peer `%s' session %u\n",
694 * Initialize address subsystem. The addresses subsystem manages the addresses
695 * known and current performance information. It has a solver component
696 * responsible for the resource allocation. It tells the solver about changes
697 * and receives updates when the solver changes the resource allocation.
699 * @param server handle to our server
702 GAS_addresses_init (struct GNUNET_SERVER_Handle *server)
704 GSA_addresses = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
705 update_addresses_stat ();
706 nc = GNUNET_SERVER_notification_context_create (server, 32);
711 * Destroy all addresses iterator
714 * @param key peer identity (unused)
715 * @param value the 'struct ATS_Address' to free
716 * @return #GNUNET_OK (continue to iterate)
719 destroy_all_address_it (void *cls,
720 const struct GNUNET_PeerIdentity *key,
723 struct ATS_Address *aa = value;
731 * Remove all addresses
734 GAS_addresses_destroy_all ()
736 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
737 "Destroying all addresses\n");
738 GAS_plugin_solver_lock ();
739 GNUNET_CONTAINER_multipeermap_iterate (GSA_addresses,
740 &destroy_all_address_it,
742 GAS_plugin_solver_unlock ();
747 * Shutdown address subsystem.
750 GAS_addresses_done ()
752 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
753 "Shutting down addresses\n");
754 GAS_addresses_destroy_all ();
755 GNUNET_CONTAINER_multipeermap_destroy (GSA_addresses);
756 GSA_addresses = NULL;
757 GNUNET_SERVER_notification_context_destroy (nc);
763 * Closure for #peerinfo_it().
765 struct PeerInfoIteratorContext
768 * Function to call for each address.
770 GNUNET_ATS_PeerInfo_Iterator it;
780 * Iterator to iterate over a peer's addresses
782 * @param cls a `struct PeerInfoIteratorContext`
783 * @param key the peer id
784 * @param value the `struct ATS_address`
785 * @return #GNUNET_OK to continue
788 peerinfo_it (void *cls,
789 const struct GNUNET_PeerIdentity *key,
792 struct PeerInfoIteratorContext *pi_ctx = cls;
793 struct ATS_Address *addr = value;
795 pi_ctx->it (pi_ctx->it_cls,
801 addr->atsi, addr->atsi_count,
802 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_out),
803 GNUNET_BANDWIDTH_value_init (addr->assigned_bw_in));
809 * Return information all peers currently known to ATS
811 * @param peer the respective peer, NULL for 'all' peers
812 * @param pi_it the iterator to call for every peer
813 * @param pi_it_cls the closure for @a pi_it
816 GAS_addresses_get_peer_info (const struct GNUNET_PeerIdentity *peer,
817 GNUNET_ATS_PeerInfo_Iterator pi_it,
820 struct PeerInfoIteratorContext pi_ctx;
824 /* does not make sense without callback */
828 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
829 "Returning information for %s from a total of %u known addresses\n",
833 (unsigned int) GNUNET_CONTAINER_multipeermap_size (GSA_addresses));
835 pi_ctx.it_cls = pi_it_cls;
837 GNUNET_CONTAINER_multipeermap_iterate (GSA_addresses,
841 GNUNET_CONTAINER_multipeermap_get_multiple (GSA_addresses,
843 &peerinfo_it, &pi_ctx);
848 GNUNET_BANDWIDTH_ZERO,
849 GNUNET_BANDWIDTH_ZERO);
854 * Information we need for the callbacks to return a list of addresses
855 * back to the client.
857 struct AddressIteration
860 * Actual handle to the client.
862 struct GNUNET_SERVER_Client *client;
865 * Are we sending all addresses, or only those that are active?
870 * Which ID should be included in the response?
878 * Send a #GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE with the
879 * given address details to the client identified in @a ai.
881 * @param ai our address information context (identifies the client)
882 * @param id the peer id this address is for
883 * @param plugin_name name of the plugin that supports this address
884 * @param plugin_addr address
885 * @param plugin_addr_len length of @a plugin_addr
886 * @param active #GNUNET_YES if this address is actively used
887 * @param atsi ats performance information
888 * @param atsi_count number of ats performance elements in @a atsi
889 * @param bandwidth_out current outbound bandwidth assigned to address
890 * @param bandwidth_in current inbound bandwidth assigned to address
893 transmit_req_addr (struct AddressIteration *ai,
894 const struct GNUNET_PeerIdentity *id,
895 const char *plugin_name,
896 const void *plugin_addr,
897 size_t plugin_addr_len,
899 const struct GNUNET_ATS_Information *atsi,
901 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
902 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
905 struct GNUNET_ATS_Information *atsp;
906 struct PeerInformationMessage *msg;
908 size_t plugin_name_length;
911 if (NULL != plugin_name)
912 plugin_name_length = strlen (plugin_name) + 1;
914 plugin_name_length = 0;
915 msize = sizeof (struct PeerInformationMessage) +
916 atsi_count * sizeof (struct GNUNET_ATS_Information) +
917 plugin_addr_len + plugin_name_length;
918 char buf[msize] GNUNET_ALIGN;
920 GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
921 GNUNET_assert (atsi_count <
922 GNUNET_SERVER_MAX_MESSAGE_SIZE /
923 sizeof (struct GNUNET_ATS_Information));
924 msg = (struct PeerInformationMessage *) buf;
925 msg->header.size = htons (msize);
926 msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE);
927 msg->ats_count = htonl (atsi_count);
928 msg->id = htonl (ai->id);
932 memset (&msg->peer, '\0', sizeof (struct GNUNET_PeerIdentity));
933 msg->address_length = htons (plugin_addr_len);
934 msg->address_active = ntohl (active);
935 msg->plugin_name_length = htons (plugin_name_length);
936 msg->bandwidth_out = bandwidth_out;
937 msg->bandwidth_in = bandwidth_in;
938 atsp = (struct GNUNET_ATS_Information *) &msg[1];
939 memcpy (atsp, atsi, sizeof (struct GNUNET_ATS_Information) * atsi_count);
940 addrp = (char *) &atsp[atsi_count];
941 if (NULL != plugin_addr)
942 memcpy (addrp, plugin_addr, plugin_addr_len);
943 if (NULL != plugin_name)
944 strcpy (&addrp[plugin_addr_len], plugin_name);
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_SERVER_notification_context_add (nc,
1031 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1032 "Received ADDRESSLIST_REQUEST message\n");
1033 alrm = (const struct AddressListRequestMessage *) message;
1034 ai.all = ntohl (alrm->all);
1035 ai.id = ntohl (alrm->id);
1040 sizeof (struct GNUNET_PeerIdentity));
1041 if (0 == memcmp (&alrm->peer,
1043 sizeof (struct GNUNET_PeerIdentity)))
1045 /* Return addresses for all peers */
1046 GAS_addresses_get_peer_info (NULL,
1047 &req_addr_peerinfo_it,
1052 /* Return addresses for a specific peer */
1053 GAS_addresses_get_peer_info (&alrm->peer,
1054 &req_addr_peerinfo_it,
1057 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1058 "Finished handling `%s' message\n",
1059 "ADDRESSLIST_REQUEST");
1060 transmit_req_addr (&ai,
1064 GNUNET_BANDWIDTH_ZERO,
1065 GNUNET_BANDWIDTH_ZERO);
1066 GNUNET_SERVER_receive_done (client,
1072 /* end of gnunet-service-ats_addresses.c */