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source: source/ariba/communication/BaseCommunication.cpp@ 5630

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1// [License]
2// The Ariba-Underlay Copyright
3//
4// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
5//
6// Institute of Telematics
7// UniversitÀt Karlsruhe (TH)
8// Zirkel 2, 76128 Karlsruhe
9// Germany
10//
11// Redistribution and use in source and binary forms, with or without
12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
22// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33// The views and conclusions contained in the software and documentation
34// are those of the authors and should not be interpreted as representing
35// official policies, either expressed or implied, of the Institute of
36// Telematics.
37// [License]
38
39#include "BaseCommunication.h"
40
41#ifdef UNDERLAY_OMNET
42 #include "ariba/communication/modules/transport/omnet/AribaOmnetModule.h"
43 #include "ariba/communication/modules/network/omnet/OmnetNetworkProtocol.h"
44 #include "ariba/utility/system/StartupWrapper.h"
45
46 using ariba::communication::AribaOmnetModule;
47 using ariba::communication::OmnetNetworkProtocol;
48 using ariba::utility::StartupWrapper;
49#endif
50
51namespace ariba {
52namespace communication {
53
54#include "networkinfo/AddressDiscovery.hpp"
55
56use_logging_cpp(BaseCommunication);
57
58/// adds an endpoint to the list
59void BaseCommunication::add_endpoint( const address_v* endpoint ) {
60 if (endpoint==NULL) return;
61 BOOST_FOREACH( endpoint_reference& ref, remote_endpoints ) {
62 if (*ref.endpoint == *endpoint) {
63 ref.count++;
64 return;
65 }
66 }
67 endpoint_reference ref;
68 ref.endpoint = endpoint->clone();
69 ref.count = 1;
70 remote_endpoints.push_back(ref);
71}
72
73/// removes an endpoint from the list
74void BaseCommunication::remove_endpoint( const address_v* endpoint ) {
75 if (endpoint==NULL) return;
76 for (vector<endpoint_reference>::iterator i = remote_endpoints.begin();
77 i != remote_endpoints.end(); i++) {
78 if (*i->endpoint == *endpoint) {
79 i->count--;
80 if (i->count==0) {
81 logging_info("No more links to " << i->endpoint->to_string() << ": terminating transports!");
82 transport->terminate(i->endpoint);
83 delete i->endpoint;
84 remote_endpoints.erase(i);
85 }
86 return;
87 }
88 }
89}
90
91BaseCommunication::BaseCommunication() {
92 this->transport = NULL;
93 this->started = false;
94}
95
96BaseCommunication::~BaseCommunication(){
97}
98
99void BaseCommunication::start() {
100 logging_info( "Starting up ..." );
101 currentSeqnum = 0;
102
103 // creating transports
104 logging_info( "Creating transports ..." );
105
106#ifdef UNDERLAY_OMNET
107 AribaOmnetModule* module = StartupWrapper::getCurrentModule();
108 module->setServerPort( listenport );
109
110 transport = module;
111 network = new OmnetNetworkProtocol( module );
112#else
113 transport = new transport_peer( localDescriptor.getEndpoints() );
114#endif
115
116 logging_info( "Searching for local locators ..." );
117 discover_endpoints(localDescriptor.getEndpoints());
118 logging_info( "Done. Local endpoints = " << localDescriptor.toString() );
119
120 transport->register_listener( this );
121 transport->start();
122
123#ifndef UNDERLAY_OMNET
124 // bind to the network change detection
125 networkMonitor.registerNotification( this );
126#endif
127
128 // base comm startup done
129 started = true;
130 logging_info( "Started up." );
131}
132
133void BaseCommunication::stop() {
134 logging_info( "Stopping transports ..." );
135
136 transport->stop();
137 delete transport;
138 started = false;
139
140 logging_info( "Stopped." );
141}
142
143bool BaseCommunication::isStarted(){
144 return started;
145}
146
147/// Sets the endpoints
148void BaseCommunication::setEndpoints( string& _endpoints ) {
149 localDescriptor.getEndpoints().assign(_endpoints);
150 logging_info("Setting local end-points: "
151 << localDescriptor.getEndpoints().to_string());
152}
153
154const LinkID BaseCommunication::establishLink(
155 const EndpointDescriptor& descriptor,
156 const LinkID& link_id,
157 const QoSParameterSet& qos,
158 const SecurityParameterSet& sec) {
159
160 // copy link id
161 LinkID linkid = link_id;
162
163 // debug
164 logging_debug( "Request to establish link" );
165
166 // create link identifier
167 if (linkid.isUnspecified()) linkid = LinkID::create();
168
169 // create link descriptor
170 logging_debug( "Creating new descriptor entry with local link id=" << linkid.toString() );
171 LinkDescriptor* ld = new LinkDescriptor();
172 ld->localLink = linkid;
173 addLink( ld );
174
175 // send a message to request new link to remote
176 logging_debug( "Send messages with request to open link to " << descriptor.toString() );
177 AribaBaseMsg baseMsg( AribaBaseMsg::typeLinkRequest, linkid );
178 baseMsg.getLocalDescriptor() = localDescriptor;
179
180 // serialize and send message
181 send( &baseMsg, descriptor );
182
183 return linkid;
184}
185
186void BaseCommunication::dropLink(const LinkID link) {
187
188 logging_debug( "Starting to drop link " + link.toString() );
189
190 // see if we have the link
191 LinkDescriptor& ld = queryLocalLink( link );
192 if( ld.isUnspecified() ) {
193 logging_error( "Don't know the link you want to drop "+ link.toString() );
194 return;
195 }
196
197 // tell the registered listeners
198 BOOST_FOREACH( CommunicationEvents* i, eventListener ) {
199 i->onLinkDown( link, ld.localLocator, ld.remoteLocator );
200 }
201
202 // create message to drop the link
203 logging_debug( "Sending out link close request. for us, the link is closed now" );
204 AribaBaseMsg msg( AribaBaseMsg::typeLinkClose, ld.localLink, ld.remoteLink );
205
206 // send message to drop the link
207 send( &msg, ld );
208
209 // remove from map
210 removeLink(link);
211}
212
213seqnum_t BaseCommunication::sendMessage( const LinkID lid, const Message* message) {
214
215 logging_debug( "Sending out message to link " << lid.toString() );
216
217 // query local link info
218 LinkDescriptor& ld = queryLocalLink(lid);
219 if( ld.isUnspecified() ){
220 logging_error( "Don't know the link with id " << lid.toString() );
221 return -1;
222 }
223
224 // link not up-> error
225 if( !ld.up ) {
226 logging_error("Can not send on link " << lid.toString() << ": link not up");
227 return -1;
228 }
229
230 // create message
231 AribaBaseMsg msg( AribaBaseMsg::typeData, ld.localLink, ld.remoteLink );
232
233 // encapsulate the payload message
234 msg.encapsulate( const_cast<Message*>(message) );
235
236 // send message
237 send( &msg, ld );
238
239 // return sequence number
240 return ++currentSeqnum;
241}
242
243const EndpointDescriptor& BaseCommunication::getEndpointDescriptor(const LinkID link) const {
244 if( link == LinkID::UNSPECIFIED){
245 return localDescriptor;
246 } else {
247 LinkDescriptor& linkDesc = queryLocalLink(link);
248 if (linkDesc.isUnspecified()) return EndpointDescriptor::UNSPECIFIED();
249 return linkDesc.remoteEndpoint;
250 }
251}
252
253void BaseCommunication::registerEventListener(CommunicationEvents* _events){
254 if( eventListener.find( _events ) == eventListener.end() )
255 eventListener.insert( _events );
256}
257
258void BaseCommunication::unregisterEventListener(CommunicationEvents* _events){
259 EventListenerSet::iterator i = eventListener.find( _events );
260 if( i != eventListener.end() )
261 eventListener.erase( i );
262}
263
264SystemEventType TransportEvent("Transport");
265SystemEventType MessageDispatchEvent("MessageDispatchEvent", TransportEvent );
266
267class DispatchMsg {
268public:
269 address_v* local;
270 address_v* remote;
271 Message* message;
272};
273
274/// called when a system event is emitted by system queue
275void BaseCommunication::handleSystemEvent(const SystemEvent& event) {
276
277 // dispatch received messages
278 if ( event.getType() == MessageDispatchEvent ){
279 logging_debug( "Forwarding message receiver" );
280 DispatchMsg* dmsg = event.getData<DispatchMsg>();
281 Message* msg = dmsg->message;
282 receiveMessage(msg, dmsg->local, dmsg->remote);
283 msg->dropPayload();
284 delete dmsg;
285 delete msg;
286 }
287}
288
289/// called when a message is received from transport_peer
290void BaseCommunication::receive_message(transport_protocol* transport,
291 const address_vf local, const address_vf remote, const uint8_t* data,
292 size_t size) {
293
294// logging_debug( "Dispatching message" );
295
296 // convert data
297 Data data_( const_cast<uint8_t*>(data), size * 8 );
298 DispatchMsg* dmsg = new DispatchMsg();
299
300 Message* msg = new Message(data_);
301 dmsg->local = local->clone();
302 dmsg->remote = remote->clone();
303 dmsg->message = msg;
304
305 SystemQueue::instance().scheduleEvent(
306 SystemEvent( this, MessageDispatchEvent, dmsg )
307 );
308}
309
310/// handles a message from the underlay transport
311void BaseCommunication::receiveMessage(const Message* message,
312 const address_v* local, const address_v* remote ){
313
314 /// decapsulate message
315 AribaBaseMsg* msg = ((Message*)message)->decapsulate<AribaBaseMsg>();
316 logging_debug( "Receiving message of type " << msg->getTypeString() );
317
318 // handle message
319 switch (msg->getType()) {
320
321 // ---------------------------------------------------------------------
322 // data message
323 // ---------------------------------------------------------------------
324 case AribaBaseMsg::typeData: {
325 logging_debug( "Received data message, forwarding to overlay" );
326 if( messageReceiver != NULL ) {
327 messageReceiver->receiveMessage(
328 msg, msg->getRemoteLink(), NodeID::UNSPECIFIED
329 );
330 }
331 break;
332 }
333
334 // ---------------------------------------------------------------------
335 // handle link request from remote
336 // ---------------------------------------------------------------------
337 case AribaBaseMsg::typeLinkRequest: {
338 logging_debug( "Received link open request" );
339
340 /// only answer the first request
341 if (!queryRemoteLink(msg->getLocalLink()).isUnspecified()) {
342 logging_debug("Link request already received. Ignore!");
343 break;
344 }
345
346 /// create link ids
347 LinkID localLink = LinkID::create();
348 LinkID remoteLink = msg->getLocalLink();
349 logging_debug( "local=" << local->to_string()
350 << " remote=" << remote->to_string()
351 );
352
353 // check if link creation is allowed by ALL listeners
354 bool allowlink = true;
355 BOOST_FOREACH( CommunicationEvents* i, eventListener ){
356 allowlink &= i->onLinkRequest( localLink, local, remote );
357 }
358
359 // not allowed-> warn
360 if( !allowlink ){
361 logging_warn( "Overlay denied creation of link" );
362 return;
363 }
364
365 // create descriptor
366 LinkDescriptor* ld = new LinkDescriptor();
367 ld->localLink = localLink;
368 ld->remoteLink = remoteLink;
369 ld->localLocator = local->clone();
370 ld->remoteLocator = remote->clone();
371 ld->remoteEndpoint = msg->getLocalDescriptor();
372 add_endpoint(ld->remoteLocator);
373
374 // add layer 1-3 addresses
375 ld->remoteEndpoint.getEndpoints().add(
376 ld->remoteLocator, endpoint_set::Layer1_3);
377 localDescriptor.getEndpoints().add(
378 local, endpoint_set::Layer1_3
379 );
380
381 // link is now up-> add it
382 ld->up = true;
383 addLink(ld);
384
385 // link is up!
386 logging_debug( "Link (initiated from remote) is up with "
387 << "local(id=" << ld->localLink.toString() << ","
388 << "locator=" << ld->localLocator->to_string() << ") "
389 << "remote(id=" << ld->remoteLink.toString() << ", "
390 << "locator=" << ld->remoteLocator->to_string() << ")"
391 );
392
393 // sending link request reply
394 logging_debug( "Sending link request reply with ids "
395 << "local=" << localLink.toString() << ", "
396 << "remote=" << remoteLink.toString() );
397 AribaBaseMsg reply( AribaBaseMsg::typeLinkReply, localLink, remoteLink );
398 reply.getLocalDescriptor() = localDescriptor;
399 reply.getRemoteDescriptor() = ld->remoteEndpoint;
400
401 send( &reply, *ld );
402
403 // inform listeners about new open link
404 BOOST_FOREACH( CommunicationEvents* i, eventListener ) {
405 i->onLinkUp( localLink, ld->localLocator, ld->remoteLocator);
406 }
407
408 // done
409 break;
410 }
411
412 // ---------------------------------------------------------------------
413 // handle link request reply
414 // ---------------------------------------------------------------------
415 case AribaBaseMsg::typeLinkReply: {
416 logging_debug( "Received link open reply for a link we initiated" );
417
418 // this is a reply to a link open request, so we have already
419 // a link mapping and can now set the remote link to valid
420 LinkDescriptor& ld = queryLocalLink( msg->getRemoteLink() );
421
422 // no link found-> warn!
423 if (ld.isUnspecified()) {
424 logging_warn("Failed to find local link " << msg->getRemoteLink().toString());
425 return;
426 }
427
428 // set remote locator and link id
429 ld.remoteLink = msg->getLocalLink();
430 ld.remoteLocator = remote->clone();
431 localDescriptor.getEndpoints().add(
432 msg->getRemoteDescriptor().getEndpoints(),
433 endpoint_set::Layer1_3
434 );
435 ld.up = true;
436 add_endpoint(ld.remoteLocator);
437
438 logging_debug( "Link is now up with local id "
439 << ld.localLink.toString() << " and remote id "
440 << ld.remoteLink.toString() );
441
442
443 // inform lisneters about link up event
444 BOOST_FOREACH( CommunicationEvents* i, eventListener ){
445 i->onLinkUp( ld.localLink, ld.localLocator, ld.remoteLocator );
446 }
447
448 // done
449 break;
450 }
451
452 // ---------------------------------------------------------------------
453 // handle link close requests
454 // ---------------------------------------------------------------------
455 case AribaBaseMsg::typeLinkClose: {
456 // get remote link
457 const LinkID& localLink = msg->getRemoteLink();
458 logging_debug( "Received link close request for link " << localLink.toString() );
459
460 // searching for link, not found-> warn
461 LinkDescriptor& linkDesc = queryLocalLink( localLink );
462 if (linkDesc.isUnspecified()) {
463 logging_warn("Failed to find local link " << localLink.toString());
464 return;
465 }
466
467 // inform listeners
468 BOOST_FOREACH( CommunicationEvents* i, eventListener ){
469 i->onLinkDown( linkDesc.localLink,
470 linkDesc.localLocator, linkDesc.remoteLocator );
471 }
472
473 // remove the link descriptor
474 removeLink( localLink );
475
476 // done
477 break;
478 }
479
480 // ---------------------------------------------------------------------
481 // handle link locator changes
482 // ---------------------------------------------------------------------
483 case AribaBaseMsg::typeLinkUpdate: {
484 const LinkID& localLink = msg->getRemoteLink();
485 logging_debug( "Received link update for link "
486 << localLink.toString() );
487
488 // find the link description
489 LinkDescriptor& linkDesc = queryLocalLink( localLink );
490 if (linkDesc.isUnspecified()) {
491 logging_warn("Failed to update local link "
492 << localLink.toString());
493 return;
494 }
495
496 // update the remote locator
497 const address_v* oldremote = linkDesc.remoteLocator;
498 linkDesc.remoteLocator = remote->clone();
499
500 // inform the listeners (local link has _not_ changed!)
501 BOOST_FOREACH( CommunicationEvents* i, eventListener ){
502 i->onLinkChanged(
503 linkDesc.localLink, // linkid
504 linkDesc.localLocator, // old local
505 linkDesc.localLocator, // new local
506 oldremote, // old remote
507 linkDesc.remoteLocator // new remote
508 );
509 }
510
511 // done
512 break;
513 }
514 }
515}
516
517/// add a newly allocated link to the set of links
518void BaseCommunication::addLink( LinkDescriptor* link ) {
519 linkSet.push_back( link );
520}
521
522/// remove a link from set
523void BaseCommunication::removeLink( const LinkID& localLink ) {
524 for(LinkSet::iterator i=linkSet.begin(); i != linkSet.end(); i++){
525 if( (*i)->localLink != localLink) continue;
526 remove_endpoint((*i)->remoteLocator);
527 delete *i;
528 linkSet.erase( i );
529 break;
530 }
531}
532
533/// query a descriptor by local link id
534BaseCommunication::LinkDescriptor& BaseCommunication::queryLocalLink( const LinkID& link ) const {
535 for (int i=0; i<linkSet.size();i++)
536 if (linkSet[i]->localLink == link) return (LinkDescriptor&)*linkSet[i];
537
538 return LinkDescriptor::UNSPECIFIED();
539}
540
541/// query a descriptor by remote link id
542BaseCommunication::LinkDescriptor& BaseCommunication::queryRemoteLink( const LinkID& link ) const {
543 for (int i=0; i<linkSet.size();i++)
544 if (linkSet[i]->remoteLink == link) return (LinkDescriptor&)*linkSet[i];
545
546 return LinkDescriptor::UNSPECIFIED();
547}
548
549LinkIDs BaseCommunication::getLocalLinks( const address_v* addr ) const {
550 LinkIDs ids;
551 for (int i=0; i<linkSet.size(); i++){
552 if( addr == NULL ){
553 ids.push_back( linkSet[i]->localLink );
554 } else {
555 if ( *linkSet[i]->remoteLocator == *addr )
556 ids.push_back( linkSet[i]->localLink );
557 }
558 }
559 return ids;
560}
561
562void BaseCommunication::onNetworkChange(const NetworkChangeInterface::NetworkChangeInfo& info){
563
564#ifdef UNDERLAY_OMNET
565
566 // we have no mobility support for simulations
567 return
568
569#endif // UNDERLAY_OMNET
570
571/*- disabled!
572
573 // we only care about address changes, not about interface changes
574 // as address changes are triggered by interface changes, we are safe here
575 if( info.type != NetworkChangeInterface::EventTypeAddressNew &&
576 info.type != NetworkChangeInterface::EventTypeAddressDelete ) return;
577
578 logging_info( "base communication is handling network address changes" );
579
580 // get all now available addresses
581 NetworkInformation networkInformation;
582 AddressInformation addressInformation;
583
584 NetworkInterfaceList interfaces = networkInformation.getInterfaces();
585 AddressList addresses;
586
587 for( NetworkInterfaceList::iterator i = interfaces.begin(); i != interfaces.end(); i++ ){
588 AddressList newaddr = addressInformation.getAddresses(*i);
589 addresses.insert( addresses.end(), newaddr.begin(), newaddr.end() );
590 }
591
592 //
593 // get current locators for the local endpoint
594 // TODO: this code is dublicate of the ctor code!!! cleanup!
595 //
596
597 NetworkProtocol::NetworkLocatorSet locators = network->getAddresses();
598 NetworkProtocol::NetworkLocatorSet::iterator i = locators.begin();
599 NetworkProtocol::NetworkLocatorSet::iterator iend = locators.end();
600
601 //
602 // remember the old local endpoint, in case it changes
603 //
604
605 EndpointDescriptor oldLocalDescriptor( localDescriptor );
606
607 //
608 // look for local locators that we can use in communication
609 //
610 // choose the first locator that is not localhost
611 //
612
613 bool foundLocator = false;
614 bool changedLocator = false;
615
616 for( ; i != iend; i++){
617 logging_debug( "local locator found " << (*i)->toString() );
618 IPv4Locator* ipv4locator = dynamic_cast<IPv4Locator*>(*i);
619
620 if( *ipv4locator != IPv4Locator::LOCALHOST &&
621 *ipv4locator != IPv4Locator::ANY &&
622 *ipv4locator != IPv4Locator::BROADCAST ){
623
624 ipv4locator->setPort( listenport );
625 changedLocator = *localDescriptor.locator != *ipv4locator;
626 localDescriptor.locator = ipv4locator;
627 logging_info( "binding to addr = " << ipv4locator->toString() );
628 foundLocator = true;
629 break;
630 }
631 } // for( ; i != iend; i++)
632
633 //
634 // if we found no locator, bind to localhost
635 //
636
637 if( !foundLocator ){
638 changedLocator = *localDescriptor.locator != IPv4Locator::LOCALHOST;
639 localDescriptor.locator = new IPv4Locator( IPv4Locator::LOCALHOST );
640 ((IPv4Locator*)(localDescriptor.locator))->setPort( listenport );
641 logging_info( "found no good local lcoator, binding to addr = " <<
642 localDescriptor.locator->toString() );
643 }
644
645 //
646 // if we have connections that have no more longer endpoints
647 // close these. they will be automatically built up again.
648 // also update the local locator in the linkset mapping
649 //
650
651 if( changedLocator ){
652
653 logging_debug( "local endp locator has changed to " << localDescriptor.toString() <<
654 ", resettings connections that end at old locator " <<
655 oldLocalDescriptor.toString());
656
657 LinkSet::iterator i = linkSet.begin();
658 LinkSet::iterator iend = linkSet.end();
659
660 for( ; i != iend; i++ ){
661
662 logging_debug( "checking connection for locator change: " <<
663 " local " << (*i).localLocator->toString() <<
664 " old " << oldLocalDescriptor.locator->toString() );
665
666 if( *((*i).localLocator) == *(oldLocalDescriptor.locator) ){
667
668 logging_debug("terminating connection to " << (*i).remoteLocator->toString() );
669 transport->terminate( oldLocalDescriptor.locator, (*i).remoteLocator );
670
671 (*i).localLocator = localDescriptor.locator;
672 }
673 } // for( ; i != iend; i++ )
674
675 // wait 500ms to give the sockets time to shut down
676 usleep( 500000 );
677
678 } else {
679
680 logging_debug( "locator has not changed, not resetting connections" );
681
682 }
683
684 //
685 // handle the connections that have no longer any
686 // valid locator. send update messages with the new
687 // locator, so the remote node updates its locator/link mapping
688 //
689
690 LinkSet::iterator iAffected = linkSet.begin();
691 LinkSet::iterator endAffected = linkSet.end();
692
693 for( ; iAffected != endAffected; iAffected++ ){
694 LinkDescriptor descr = *iAffected;
695 logging_debug( "sending out link locator update to " << descr.remoteLocator->toString() );
696
697 AribaBaseMsg updateMsg( descr.remoteLocator,
698 AribaBaseMsg::LINK_STATE_UPDATE,
699 descr.localLink, descr.remoteLink );
700
701 transport->sendMessage( &updateMsg );
702 }
703*/
704}
705
706/// sends a message to all end-points in the end-point descriptor
707void BaseCommunication::send(Message* message, const EndpointDescriptor& endpoint) {
708 Data data = data_serialize( message, DEFAULT_V );
709 transport->send( endpoint.getEndpoints(), data.getBuffer(), data.getLength() / 8);
710}
711
712/// sends a message to the remote locator inside the link descriptor
713void BaseCommunication::send(Message* message, const LinkDescriptor& desc) {
714 Data data = data_serialize( message, DEFAULT_V );
715 transport->send( desc.remoteLocator, data.getBuffer(), data.getLength() / 8);
716}
717
718}} // namespace ariba, communication
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