1package eu.siacs.conversations.xmpp.jingle;
2
3import android.os.SystemClock;
4import android.util.Log;
5
6import com.google.common.base.Optional;
7import com.google.common.base.Preconditions;
8import com.google.common.base.Strings;
9import com.google.common.base.Throwables;
10import com.google.common.collect.Collections2;
11import com.google.common.collect.ImmutableList;
12import com.google.common.collect.ImmutableMap;
13import com.google.common.collect.Sets;
14import com.google.common.primitives.Ints;
15import com.google.common.util.concurrent.ListenableFuture;
16
17import org.webrtc.EglBase;
18import org.webrtc.IceCandidate;
19import org.webrtc.PeerConnection;
20import org.webrtc.VideoTrack;
21
22import java.util.ArrayDeque;
23import java.util.Arrays;
24import java.util.Collection;
25import java.util.Collections;
26import java.util.List;
27import java.util.Map;
28import java.util.Set;
29import java.util.concurrent.ScheduledFuture;
30import java.util.concurrent.TimeUnit;
31
32import eu.siacs.conversations.Config;
33import eu.siacs.conversations.entities.Account;
34import eu.siacs.conversations.entities.Conversation;
35import eu.siacs.conversations.entities.Conversational;
36import eu.siacs.conversations.entities.Message;
37import eu.siacs.conversations.entities.RtpSessionStatus;
38import eu.siacs.conversations.services.AppRTCAudioManager;
39import eu.siacs.conversations.utils.IP;
40import eu.siacs.conversations.xml.Element;
41import eu.siacs.conversations.xml.Namespace;
42import eu.siacs.conversations.xmpp.jingle.stanzas.Group;
43import eu.siacs.conversations.xmpp.jingle.stanzas.IceUdpTransportInfo;
44import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
45import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
46import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
47import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
48import eu.siacs.conversations.xmpp.stanzas.IqPacket;
49import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
50import rocks.xmpp.addr.Jid;
51
52public class JingleRtpConnection extends AbstractJingleConnection implements WebRTCWrapper.EventCallback {
53
54 public static final List<State> STATES_SHOWING_ONGOING_CALL = Arrays.asList(
55 State.PROCEED,
56 State.SESSION_INITIALIZED_PRE_APPROVED,
57 State.SESSION_ACCEPTED
58 );
59 private static final long BUSY_TIME_OUT = 30;
60 private static final List<State> TERMINATED = Arrays.asList(
61 State.TERMINATED_SUCCESS,
62 State.TERMINATED_DECLINED_OR_BUSY,
63 State.TERMINATED_CONNECTIVITY_ERROR,
64 State.TERMINATED_CANCEL_OR_TIMEOUT,
65 State.TERMINATED_APPLICATION_FAILURE
66 );
67
68 private static final Map<State, Collection<State>> VALID_TRANSITIONS;
69
70 static {
71 final ImmutableMap.Builder<State, Collection<State>> transitionBuilder = new ImmutableMap.Builder<>();
72 transitionBuilder.put(State.NULL, ImmutableList.of(
73 State.PROPOSED,
74 State.SESSION_INITIALIZED,
75 State.TERMINATED_APPLICATION_FAILURE
76 ));
77 transitionBuilder.put(State.PROPOSED, ImmutableList.of(
78 State.ACCEPTED,
79 State.PROCEED,
80 State.REJECTED,
81 State.RETRACTED,
82 State.TERMINATED_APPLICATION_FAILURE,
83 State.TERMINATED_CONNECTIVITY_ERROR //only used when the xmpp connection rebinds
84 ));
85 transitionBuilder.put(State.PROCEED, ImmutableList.of(
86 State.SESSION_INITIALIZED_PRE_APPROVED,
87 State.TERMINATED_SUCCESS,
88 State.TERMINATED_APPLICATION_FAILURE,
89 State.TERMINATED_CONNECTIVITY_ERROR //at this state used for error bounces of the proceed message
90 ));
91 transitionBuilder.put(State.SESSION_INITIALIZED, ImmutableList.of(
92 State.SESSION_ACCEPTED,
93 State.TERMINATED_SUCCESS,
94 State.TERMINATED_DECLINED_OR_BUSY,
95 State.TERMINATED_CONNECTIVITY_ERROR, //at this state used for IQ errors and IQ timeouts
96 State.TERMINATED_CANCEL_OR_TIMEOUT,
97 State.TERMINATED_APPLICATION_FAILURE
98 ));
99 transitionBuilder.put(State.SESSION_INITIALIZED_PRE_APPROVED, ImmutableList.of(
100 State.SESSION_ACCEPTED,
101 State.TERMINATED_SUCCESS,
102 State.TERMINATED_DECLINED_OR_BUSY,
103 State.TERMINATED_CONNECTIVITY_ERROR, //at this state used for IQ errors and IQ timeouts
104 State.TERMINATED_CANCEL_OR_TIMEOUT,
105 State.TERMINATED_APPLICATION_FAILURE
106 ));
107 transitionBuilder.put(State.SESSION_ACCEPTED, ImmutableList.of(
108 State.TERMINATED_SUCCESS,
109 State.TERMINATED_DECLINED_OR_BUSY,
110 State.TERMINATED_CONNECTIVITY_ERROR,
111 State.TERMINATED_CANCEL_OR_TIMEOUT,
112 State.TERMINATED_APPLICATION_FAILURE
113 ));
114 VALID_TRANSITIONS = transitionBuilder.build();
115 }
116
117 private final WebRTCWrapper webRTCWrapper = new WebRTCWrapper(this);
118 private final ArrayDeque<IceCandidate> pendingIceCandidates = new ArrayDeque<>();
119 private final Message message;
120 private State state = State.NULL;
121 private Set<Media> proposedMedia;
122 private RtpContentMap initiatorRtpContentMap;
123 private RtpContentMap responderRtpContentMap;
124 private long rtpConnectionStarted = 0; //time of 'connected'
125 private ScheduledFuture<?> ringingTimeoutFuture;
126
127 JingleRtpConnection(JingleConnectionManager jingleConnectionManager, Id id, Jid initiator) {
128 super(jingleConnectionManager, id, initiator);
129 final Conversation conversation = jingleConnectionManager.getXmppConnectionService().findOrCreateConversation(
130 id.account,
131 id.with.asBareJid(),
132 false,
133 false
134 );
135 this.message = new Message(
136 conversation,
137 isInitiator() ? Message.STATUS_SEND : Message.STATUS_RECEIVED,
138 Message.TYPE_RTP_SESSION,
139 id.sessionId
140 );
141 }
142
143 private static State reasonToState(Reason reason) {
144 switch (reason) {
145 case SUCCESS:
146 return State.TERMINATED_SUCCESS;
147 case DECLINE:
148 case BUSY:
149 return State.TERMINATED_DECLINED_OR_BUSY;
150 case CANCEL:
151 case TIMEOUT:
152 return State.TERMINATED_CANCEL_OR_TIMEOUT;
153 case FAILED_APPLICATION:
154 case SECURITY_ERROR:
155 case UNSUPPORTED_TRANSPORTS:
156 case UNSUPPORTED_APPLICATIONS:
157 return State.TERMINATED_APPLICATION_FAILURE;
158 default:
159 return State.TERMINATED_CONNECTIVITY_ERROR;
160 }
161 }
162
163 @Override
164 synchronized void deliverPacket(final JinglePacket jinglePacket) {
165 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": packet delivered to JingleRtpConnection");
166 switch (jinglePacket.getAction()) {
167 case SESSION_INITIATE:
168 receiveSessionInitiate(jinglePacket);
169 break;
170 case TRANSPORT_INFO:
171 receiveTransportInfo(jinglePacket);
172 break;
173 case SESSION_ACCEPT:
174 receiveSessionAccept(jinglePacket);
175 break;
176 case SESSION_TERMINATE:
177 receiveSessionTerminate(jinglePacket);
178 break;
179 default:
180 respondOk(jinglePacket);
181 Log.d(Config.LOGTAG, String.format("%s: received unhandled jingle action %s", id.account.getJid().asBareJid(), jinglePacket.getAction()));
182 break;
183 }
184 }
185
186 @Override
187 synchronized void notifyRebound() {
188 if (isTerminated()) {
189 return;
190 }
191 webRTCWrapper.close();
192 if (!isInitiator() && isInState(State.PROPOSED, State.SESSION_INITIALIZED)) {
193 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
194 }
195 if (isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
196 //we might have already changed resources (full jid) at this point; so this might not even reach the other party
197 sendSessionTerminate(Reason.CONNECTIVITY_ERROR);
198 } else {
199 transitionOrThrow(State.TERMINATED_CONNECTIVITY_ERROR);
200 finish();
201 }
202 }
203
204 private void receiveSessionTerminate(final JinglePacket jinglePacket) {
205 respondOk(jinglePacket);
206 final JinglePacket.ReasonWrapper wrapper = jinglePacket.getReason();
207 final State previous = this.state;
208 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received session terminate reason=" + wrapper.reason + "(" + Strings.nullToEmpty(wrapper.text) + ") while in state " + previous);
209 if (TERMINATED.contains(previous)) {
210 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring session terminate because already in " + previous);
211 return;
212 }
213 webRTCWrapper.close();
214 final State target = reasonToState(wrapper.reason);
215 transitionOrThrow(target);
216 writeLogMessage(target);
217 if (previous == State.PROPOSED || previous == State.SESSION_INITIALIZED) {
218 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
219 }
220 finish();
221 }
222
223 private void receiveTransportInfo(final JinglePacket jinglePacket) {
224 if (isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
225 respondOk(jinglePacket);
226 final RtpContentMap contentMap;
227 try {
228 contentMap = RtpContentMap.of(jinglePacket);
229 } catch (IllegalArgumentException | NullPointerException e) {
230 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents; ignoring", e);
231 return;
232 }
233 final RtpContentMap rtpContentMap = isInitiator() ? this.responderRtpContentMap : this.initiatorRtpContentMap;
234 final Group originalGroup = rtpContentMap != null ? rtpContentMap.group : null;
235 final List<String> identificationTags = originalGroup == null ? Collections.emptyList() : originalGroup.getIdentificationTags();
236 if (identificationTags.size() == 0) {
237 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": no identification tags found in initial offer. we won't be able to calculate mLineIndices");
238 }
239 receiveCandidates(identificationTags, contentMap.contents.entrySet());
240 } else {
241 if (isTerminated()) {
242 respondOk(jinglePacket);
243 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring out-of-order transport info; we where already terminated");
244 } else {
245 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received transport info while in state=" + this.state);
246 terminateWithOutOfOrder(jinglePacket);
247 }
248 }
249 }
250
251 private void receiveCandidates(final List<String> identificationTags, final Set<Map.Entry<String, RtpContentMap.DescriptionTransport>> contents) {
252 for (final Map.Entry<String, RtpContentMap.DescriptionTransport> content : contents) {
253 final String ufrag = content.getValue().transport.getAttribute("ufrag");
254 for (final IceUdpTransportInfo.Candidate candidate : content.getValue().transport.getCandidates()) {
255 final String sdp;
256 try {
257 sdp = candidate.toSdpAttribute(ufrag);
258 } catch (IllegalArgumentException e) {
259 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring invalid ICE candidate " + e.getMessage());
260 continue;
261 }
262 final String sdpMid = content.getKey();
263 final int mLineIndex = identificationTags.indexOf(sdpMid);
264 final IceCandidate iceCandidate = new IceCandidate(sdpMid, mLineIndex, sdp);
265 if (isInState(State.SESSION_ACCEPTED)) {
266 Log.d(Config.LOGTAG, "received candidate: " + iceCandidate);
267 this.webRTCWrapper.addIceCandidate(iceCandidate);
268 } else {
269 this.pendingIceCandidates.offer(iceCandidate);
270 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": put ICE candidate on backlog");
271 }
272 }
273 }
274 }
275
276 private void receiveSessionInitiate(final JinglePacket jinglePacket) {
277 if (isInitiator()) {
278 Log.d(Config.LOGTAG, String.format("%s: received session-initiate even though we were initiating", id.account.getJid().asBareJid()));
279 terminateWithOutOfOrder(jinglePacket);
280 return;
281 }
282 final RtpContentMap contentMap;
283 try {
284 contentMap = RtpContentMap.of(jinglePacket);
285 contentMap.requireContentDescriptions();
286 contentMap.requireDTLSFingerprint();
287 } catch (final RuntimeException e) {
288 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents", Throwables.getRootCause(e));
289 respondOk(jinglePacket);
290 sendSessionTerminate(Reason.of(e), e.getMessage());
291 return;
292 }
293 Log.d(Config.LOGTAG, "processing session-init with " + contentMap.contents.size() + " contents");
294 final State target;
295 if (this.state == State.PROCEED) {
296 Preconditions.checkState(
297 proposedMedia != null && proposedMedia.size() > 0,
298 "proposed media must be set when processing pre-approved session-initiate"
299 );
300 if (!this.proposedMedia.equals(contentMap.getMedia())) {
301 sendSessionTerminate(Reason.SECURITY_ERROR, String.format(
302 "Your session proposal (Jingle Message Initiation) included media %s but your session-initiate was %s",
303 this.proposedMedia,
304 contentMap.getMedia()
305 ));
306 return;
307 }
308 target = State.SESSION_INITIALIZED_PRE_APPROVED;
309 } else {
310 target = State.SESSION_INITIALIZED;
311 }
312 if (transition(target, () -> this.initiatorRtpContentMap = contentMap)) {
313 respondOk(jinglePacket);
314 final List<String> identificationTags = contentMap.group == null ? Collections.emptyList() : contentMap.group.getIdentificationTags();
315 receiveCandidates(identificationTags, contentMap.contents.entrySet());
316 if (target == State.SESSION_INITIALIZED_PRE_APPROVED) {
317 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": automatically accepting session-initiate");
318 sendSessionAccept();
319 } else {
320 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received not pre-approved session-initiate. start ringing");
321 startRinging();
322 }
323 } else {
324 Log.d(Config.LOGTAG, String.format("%s: received session-initiate while in state %s", id.account.getJid().asBareJid(), state));
325 terminateWithOutOfOrder(jinglePacket);
326 }
327 }
328
329 private void receiveSessionAccept(final JinglePacket jinglePacket) {
330 if (!isInitiator()) {
331 Log.d(Config.LOGTAG, String.format("%s: received session-accept even though we were responding", id.account.getJid().asBareJid()));
332 terminateWithOutOfOrder(jinglePacket);
333 return;
334 }
335 final RtpContentMap contentMap;
336 try {
337 contentMap = RtpContentMap.of(jinglePacket);
338 contentMap.requireContentDescriptions();
339 contentMap.requireDTLSFingerprint();
340 } catch (final RuntimeException e) {
341 respondOk(jinglePacket);
342 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents in session-accept", e);
343 webRTCWrapper.close();
344 sendSessionTerminate(Reason.of(e), e.getMessage());
345 return;
346 }
347 final Set<Media> initiatorMedia = this.initiatorRtpContentMap.getMedia();
348 if (!initiatorMedia.equals(contentMap.getMedia())) {
349 sendSessionTerminate(Reason.SECURITY_ERROR, String.format(
350 "Your session-included included media %s but our session-initiate was %s",
351 this.proposedMedia,
352 contentMap.getMedia()
353 ));
354 return;
355 }
356 Log.d(Config.LOGTAG, "processing session-accept with " + contentMap.contents.size() + " contents");
357 if (transition(State.SESSION_ACCEPTED)) {
358 respondOk(jinglePacket);
359 receiveSessionAccept(contentMap);
360 final List<String> identificationTags = contentMap.group == null ? Collections.emptyList() : contentMap.group.getIdentificationTags();
361 receiveCandidates(identificationTags, contentMap.contents.entrySet());
362 } else {
363 Log.d(Config.LOGTAG, String.format("%s: received session-accept while in state %s", id.account.getJid().asBareJid(), state));
364 respondOk(jinglePacket);
365 }
366 }
367
368 private void receiveSessionAccept(final RtpContentMap contentMap) {
369 this.responderRtpContentMap = contentMap;
370 final SessionDescription sessionDescription;
371 try {
372 sessionDescription = SessionDescription.of(contentMap);
373 } catch (final IllegalArgumentException | NullPointerException e) {
374 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable convert offer from session-accept to SDP", e);
375 webRTCWrapper.close();
376 sendSessionTerminate(Reason.FAILED_APPLICATION, e.getMessage());
377 return;
378 }
379 org.webrtc.SessionDescription answer = new org.webrtc.SessionDescription(
380 org.webrtc.SessionDescription.Type.ANSWER,
381 sessionDescription.toString()
382 );
383 try {
384 this.webRTCWrapper.setRemoteDescription(answer).get();
385 } catch (final Exception e) {
386 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to set remote description after receiving session-accept", Throwables.getRootCause(e));
387 webRTCWrapper.close();
388 sendSessionTerminate(Reason.FAILED_APPLICATION);
389 }
390 }
391
392 private void sendSessionAccept() {
393 final RtpContentMap rtpContentMap = this.initiatorRtpContentMap;
394 if (rtpContentMap == null) {
395 throw new IllegalStateException("initiator RTP Content Map has not been set");
396 }
397 final SessionDescription offer;
398 try {
399 offer = SessionDescription.of(rtpContentMap);
400 } catch (final IllegalArgumentException | NullPointerException e) {
401 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable convert offer from session-initiate to SDP", e);
402 webRTCWrapper.close();
403 sendSessionTerminate(Reason.FAILED_APPLICATION, e.getMessage());
404 return;
405 }
406 sendSessionAccept(rtpContentMap.getMedia(), offer);
407 }
408
409 private void sendSessionAccept(final Set<Media> media, final SessionDescription offer) {
410 discoverIceServers(iceServers -> sendSessionAccept(media, offer, iceServers));
411 }
412
413 private synchronized void sendSessionAccept(final Set<Media> media, final SessionDescription offer, final List<PeerConnection.IceServer> iceServers) {
414 if (isTerminated()) {
415 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": ICE servers got discovered when session was already terminated. nothing to do.");
416 return;
417 }
418 try {
419 setupWebRTC(media, iceServers);
420 } catch (final WebRTCWrapper.InitializationException e) {
421 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to initialize WebRTC");
422 webRTCWrapper.close();
423 sendSessionTerminate(Reason.FAILED_APPLICATION);
424 return;
425 }
426 final org.webrtc.SessionDescription sdp = new org.webrtc.SessionDescription(
427 org.webrtc.SessionDescription.Type.OFFER,
428 offer.toString()
429 );
430 try {
431 this.webRTCWrapper.setRemoteDescription(sdp).get();
432 addIceCandidatesFromBlackLog();
433 org.webrtc.SessionDescription webRTCSessionDescription = this.webRTCWrapper.createAnswer().get();
434 final SessionDescription sessionDescription = SessionDescription.parse(webRTCSessionDescription.description);
435 final RtpContentMap respondingRtpContentMap = RtpContentMap.of(sessionDescription);
436 sendSessionAccept(respondingRtpContentMap);
437 this.webRTCWrapper.setLocalDescription(webRTCSessionDescription).get();
438 } catch (final Exception e) {
439 Log.d(Config.LOGTAG, "unable to send session accept", Throwables.getRootCause(e));
440 webRTCWrapper.close();
441 sendSessionTerminate(Reason.FAILED_APPLICATION);
442 }
443 }
444
445 private void addIceCandidatesFromBlackLog() {
446 while (!this.pendingIceCandidates.isEmpty()) {
447 final IceCandidate iceCandidate = this.pendingIceCandidates.poll();
448 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": added ICE candidate from back log " + iceCandidate);
449 this.webRTCWrapper.addIceCandidate(iceCandidate);
450 }
451 }
452
453 private void sendSessionAccept(final RtpContentMap rtpContentMap) {
454 this.responderRtpContentMap = rtpContentMap;
455 this.transitionOrThrow(State.SESSION_ACCEPTED);
456 final JinglePacket sessionAccept = rtpContentMap.toJinglePacket(JinglePacket.Action.SESSION_ACCEPT, id.sessionId);
457 Log.d(Config.LOGTAG, sessionAccept.toString());
458 send(sessionAccept);
459 }
460
461 synchronized void deliveryMessage(final Jid from, final Element message, final String serverMessageId, final long timestamp) {
462 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": delivered message to JingleRtpConnection " + message);
463 switch (message.getName()) {
464 case "propose":
465 receivePropose(from, Propose.upgrade(message), serverMessageId, timestamp);
466 break;
467 case "proceed":
468 receiveProceed(from, serverMessageId, timestamp);
469 break;
470 case "retract":
471 receiveRetract(from, serverMessageId, timestamp);
472 break;
473 case "reject":
474 receiveReject(from, serverMessageId, timestamp);
475 break;
476 case "accept":
477 receiveAccept(from, serverMessageId, timestamp);
478 break;
479 default:
480 break;
481 }
482 }
483
484 void deliverFailedProceed() {
485 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": receive message error for proceed message");
486 if (transition(State.TERMINATED_CONNECTIVITY_ERROR)) {
487 webRTCWrapper.close();
488 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": transitioned into connectivity error");
489 this.finish();
490 }
491 }
492
493 private void receiveAccept(final Jid from, final String serverMsgId, final long timestamp) {
494 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
495 if (originatedFromMyself) {
496 if (transition(State.ACCEPTED)) {
497 if (serverMsgId != null) {
498 this.message.setServerMsgId(serverMsgId);
499 }
500 this.message.setTime(timestamp);
501 this.message.setCarbon(true); //indicate that call was accepted on other device
502 this.writeLogMessageSuccess(0);
503 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
504 this.finish();
505 } else {
506 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to transition to accept because already in state=" + this.state);
507 }
508 } else {
509 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring 'accept' from " + from);
510 }
511 }
512
513 private void receiveReject(Jid from, String serverMsgId, long timestamp) {
514 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
515 //reject from another one of my clients
516 if (originatedFromMyself) {
517 if (transition(State.REJECTED)) {
518 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
519 this.finish();
520 if (serverMsgId != null) {
521 this.message.setServerMsgId(serverMsgId);
522 }
523 this.message.setTime(timestamp);
524 this.message.setCarbon(true); //indicate that call was rejected on other device
525 writeLogMessageMissed();
526 } else {
527 Log.d(Config.LOGTAG, "not able to transition into REJECTED because already in " + this.state);
528 }
529 } else {
530 Log.d(Config.LOGTAG, id.account.getJid() + ": ignoring reject from " + from + " for session with " + id.with);
531 }
532 }
533
534 private void receivePropose(final Jid from, final Propose propose, final String serverMsgId, final long timestamp) {
535 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
536 if (originatedFromMyself) {
537 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": saw proposal from mysql. ignoring");
538 } else if (transition(State.PROPOSED, () -> {
539 final Collection<RtpDescription> descriptions = Collections2.transform(
540 Collections2.filter(propose.getDescriptions(), d -> d instanceof RtpDescription),
541 input -> (RtpDescription) input
542 );
543 final Collection<Media> media = Collections2.transform(descriptions, RtpDescription::getMedia);
544 Preconditions.checkState(!media.contains(Media.UNKNOWN), "RTP descriptions contain unknown media");
545 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received session proposal from " + from + " for " + media);
546 this.proposedMedia = Sets.newHashSet(media);
547 })) {
548 if (serverMsgId != null) {
549 this.message.setServerMsgId(serverMsgId);
550 }
551 this.message.setTime(timestamp);
552 startRinging();
553 } else {
554 Log.d(Config.LOGTAG, id.account.getJid() + ": ignoring session proposal because already in " + state);
555 }
556 }
557
558 private void startRinging() {
559 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received call from " + id.with + ". start ringing");
560 ringingTimeoutFuture = jingleConnectionManager.schedule(this::ringingTimeout, BUSY_TIME_OUT, TimeUnit.SECONDS);
561 xmppConnectionService.getNotificationService().showIncomingCallNotification(id, getMedia());
562 }
563
564 private synchronized void ringingTimeout() {
565 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": timeout reached for ringing");
566 switch (this.state) {
567 case PROPOSED:
568 message.markUnread();
569 rejectCallFromProposed();
570 break;
571 case SESSION_INITIALIZED:
572 message.markUnread();
573 rejectCallFromSessionInitiate();
574 break;
575 }
576 }
577
578 private void cancelRingingTimeout() {
579 final ScheduledFuture<?> future = this.ringingTimeoutFuture;
580 if (future != null && !future.isCancelled()) {
581 future.cancel(false);
582 }
583 }
584
585 private void receiveProceed(final Jid from, final String serverMsgId, final long timestamp) {
586 final Set<Media> media = Preconditions.checkNotNull(this.proposedMedia, "Proposed media has to be set before handling proceed");
587 Preconditions.checkState(media.size() > 0, "Proposed media should not be empty");
588 if (from.equals(id.with)) {
589 if (isInitiator()) {
590 if (transition(State.PROCEED)) {
591 if (serverMsgId != null) {
592 this.message.setServerMsgId(serverMsgId);
593 }
594 this.message.setTime(timestamp);
595 this.sendSessionInitiate(media, State.SESSION_INITIALIZED_PRE_APPROVED);
596 } else {
597 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because already in %s", id.account.getJid().asBareJid(), this.state));
598 }
599 } else {
600 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because we were not initializing", id.account.getJid().asBareJid()));
601 }
602 } else if (from.asBareJid().equals(id.account.getJid().asBareJid())) {
603 if (transition(State.ACCEPTED)) {
604 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": moved session with " + id.with + " into state accepted after received carbon copied procced");
605 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
606 this.finish();
607 }
608 } else {
609 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed from %s. was expected from %s", id.account.getJid().asBareJid(), from, id.with));
610 }
611 }
612
613 private void receiveRetract(final Jid from, final String serverMsgId, final long timestamp) {
614 if (from.equals(id.with)) {
615 if (transition(State.RETRACTED)) {
616 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
617 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": session with " + id.with + " has been retracted (serverMsgId=" + serverMsgId + ")");
618 if (serverMsgId != null) {
619 this.message.setServerMsgId(serverMsgId);
620 }
621 this.message.setTime(timestamp);
622 this.message.markUnread();
623 writeLogMessageMissed();
624 finish();
625 } else {
626 Log.d(Config.LOGTAG, "ignoring retract because already in " + this.state);
627 }
628 } else {
629 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received retract from " + from + ". expected retract from" + id.with + ". ignoring");
630 }
631 }
632
633 private void sendSessionInitiate(final Set<Media> media, final State targetState) {
634 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": prepare session-initiate");
635 discoverIceServers(iceServers -> sendSessionInitiate(media, targetState, iceServers));
636 }
637
638 private synchronized void sendSessionInitiate(final Set<Media> media, final State targetState, final List<PeerConnection.IceServer> iceServers) {
639 if (isTerminated()) {
640 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": ICE servers got discovered when session was already terminated. nothing to do.");
641 return;
642 }
643 try {
644 setupWebRTC(media, iceServers);
645 } catch (WebRTCWrapper.InitializationException e) {
646 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to initialize WebRTC");
647 webRTCWrapper.close();
648 //todo we haven’t actually initiated the session yet; so sending sessionTerminate makes no sense
649 //todo either we don’t ring ever at all or maybe we should send a retract or something
650 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
651 this.finish();;
652 return;
653 }
654 try {
655 org.webrtc.SessionDescription webRTCSessionDescription = this.webRTCWrapper.createOffer().get();
656 final SessionDescription sessionDescription = SessionDescription.parse(webRTCSessionDescription.description);
657 final RtpContentMap rtpContentMap = RtpContentMap.of(sessionDescription);
658 sendSessionInitiate(rtpContentMap, targetState);
659 this.webRTCWrapper.setLocalDescription(webRTCSessionDescription).get();
660 } catch (final Exception e) {
661 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to sendSessionInitiate", Throwables.getRootCause(e));
662 webRTCWrapper.close();
663 if (isInState(targetState)) {
664 sendSessionTerminate(Reason.FAILED_APPLICATION);
665 } else {
666 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
667 this.finish();
668 }
669 }
670 }
671
672 private void sendSessionInitiate(RtpContentMap rtpContentMap, final State targetState) {
673 this.initiatorRtpContentMap = rtpContentMap;
674 this.transitionOrThrow(targetState);
675 final JinglePacket sessionInitiate = rtpContentMap.toJinglePacket(JinglePacket.Action.SESSION_INITIATE, id.sessionId);
676 send(sessionInitiate);
677 }
678
679 private void sendSessionTerminate(final Reason reason) {
680 sendSessionTerminate(reason, null);
681 }
682
683 private void sendSessionTerminate(final Reason reason, final String text) {
684 final State previous = this.state;
685 final State target = reasonToState(reason);
686 transitionOrThrow(target);
687 if (previous != State.NULL) {
688 writeLogMessage(target);
689 }
690 final JinglePacket jinglePacket = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
691 jinglePacket.setReason(reason, text);
692 Log.d(Config.LOGTAG, jinglePacket.toString());
693 send(jinglePacket);
694 finish();
695 }
696
697 private void sendTransportInfo(final String contentName, IceUdpTransportInfo.Candidate candidate) {
698 final RtpContentMap transportInfo;
699 try {
700 final RtpContentMap rtpContentMap = isInitiator() ? this.initiatorRtpContentMap : this.responderRtpContentMap;
701 transportInfo = rtpContentMap.transportInfo(contentName, candidate);
702 } catch (final Exception e) {
703 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to prepare transport-info from candidate for content=" + contentName);
704 return;
705 }
706 final JinglePacket jinglePacket = transportInfo.toJinglePacket(JinglePacket.Action.TRANSPORT_INFO, id.sessionId);
707 send(jinglePacket);
708 }
709
710 private void send(final JinglePacket jinglePacket) {
711 jinglePacket.setTo(id.with);
712 xmppConnectionService.sendIqPacket(id.account, jinglePacket, this::handleIqResponse);
713 }
714
715 private synchronized void handleIqResponse(final Account account, final IqPacket response) {
716 if (response.getType() == IqPacket.TYPE.ERROR) {
717 final String errorCondition = response.getErrorCondition();
718 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received IQ-error from " + response.getFrom() + " in RTP session. " + errorCondition);
719 if (isTerminated()) {
720 Log.i(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring error because session was already terminated");
721 return;
722 }
723 this.webRTCWrapper.close();
724 final State target;
725 if (Arrays.asList(
726 "service-unavailable",
727 "recipient-unavailable",
728 "remote-server-not-found",
729 "remote-server-timeout"
730 ).contains(errorCondition)) {
731 target = State.TERMINATED_CONNECTIVITY_ERROR;
732 } else {
733 target = State.TERMINATED_APPLICATION_FAILURE;
734 }
735 transitionOrThrow(target);
736 this.finish();
737 } else if (response.getType() == IqPacket.TYPE.TIMEOUT) {
738 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received IQ timeout in RTP session with " + id.with + ". terminating with connectivity error");
739 if (isTerminated()) {
740 Log.i(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring error because session was already terminated");
741 return;
742 }
743 this.webRTCWrapper.close();
744 transitionOrThrow(State.TERMINATED_CONNECTIVITY_ERROR);
745 this.finish();
746 }
747 }
748
749 private void terminateWithOutOfOrder(final JinglePacket jinglePacket) {
750 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": terminating session with out-of-order");
751 this.webRTCWrapper.close();
752 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
753 respondWithOutOfOrder(jinglePacket);
754 this.finish();
755 }
756
757 private void respondWithOutOfOrder(final JinglePacket jinglePacket) {
758 jingleConnectionManager.respondWithJingleError(id.account, jinglePacket, "out-of-order", "unexpected-request", "wait");
759 }
760
761 private void respondOk(final JinglePacket jinglePacket) {
762 xmppConnectionService.sendIqPacket(id.account, jinglePacket.generateResponse(IqPacket.TYPE.RESULT), null);
763 }
764
765 public RtpEndUserState getEndUserState() {
766 switch (this.state) {
767 case PROPOSED:
768 case SESSION_INITIALIZED:
769 if (isInitiator()) {
770 return RtpEndUserState.RINGING;
771 } else {
772 return RtpEndUserState.INCOMING_CALL;
773 }
774 case PROCEED:
775 if (isInitiator()) {
776 return RtpEndUserState.RINGING;
777 } else {
778 return RtpEndUserState.ACCEPTING_CALL;
779 }
780 case SESSION_INITIALIZED_PRE_APPROVED:
781 if (isInitiator()) {
782 return RtpEndUserState.RINGING;
783 } else {
784 return RtpEndUserState.CONNECTING;
785 }
786 case SESSION_ACCEPTED:
787 final PeerConnection.PeerConnectionState state = webRTCWrapper.getState();
788 if (state == PeerConnection.PeerConnectionState.CONNECTED) {
789 return RtpEndUserState.CONNECTED;
790 } else if (state == PeerConnection.PeerConnectionState.NEW || state == PeerConnection.PeerConnectionState.CONNECTING) {
791 return RtpEndUserState.CONNECTING;
792 } else if (state == PeerConnection.PeerConnectionState.CLOSED) {
793 return RtpEndUserState.ENDING_CALL;
794 } else {
795 return RtpEndUserState.CONNECTIVITY_ERROR;
796 }
797 case REJECTED:
798 case TERMINATED_DECLINED_OR_BUSY:
799 if (isInitiator()) {
800 return RtpEndUserState.DECLINED_OR_BUSY;
801 } else {
802 return RtpEndUserState.ENDED;
803 }
804 case TERMINATED_SUCCESS:
805 case ACCEPTED:
806 case RETRACTED:
807 case TERMINATED_CANCEL_OR_TIMEOUT:
808 return RtpEndUserState.ENDED;
809 case TERMINATED_CONNECTIVITY_ERROR:
810 return RtpEndUserState.CONNECTIVITY_ERROR;
811 case TERMINATED_APPLICATION_FAILURE:
812 return RtpEndUserState.APPLICATION_ERROR;
813 }
814 throw new IllegalStateException(String.format("%s has no equivalent EndUserState", this.state));
815 }
816
817 public Set<Media> getMedia() {
818 final State current = getState();
819 if (current == State.NULL) {
820 throw new IllegalStateException("RTP connection has not been initialized yet");
821 }
822 if (Arrays.asList(State.PROPOSED, State.PROCEED).contains(current)) {
823 return Preconditions.checkNotNull(this.proposedMedia, "RTP connection has not been initialized properly");
824 }
825 final RtpContentMap initiatorContentMap = initiatorRtpContentMap;
826 if (initiatorContentMap != null) {
827 return initiatorContentMap.getMedia();
828 } else if (isTerminated()) {
829 return Collections.emptySet(); //we might fail before we ever got a chance to set media
830 } else {
831 return Preconditions.checkNotNull(this.proposedMedia, "RTP connection has not been initialized properly");
832 }
833 }
834
835
836 public synchronized void acceptCall() {
837 switch (this.state) {
838 case PROPOSED:
839 cancelRingingTimeout();
840 acceptCallFromProposed();
841 break;
842 case SESSION_INITIALIZED:
843 cancelRingingTimeout();
844 acceptCallFromSessionInitialized();
845 break;
846 case ACCEPTED:
847 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": the call has already been accepted with another client. UI was just lagging behind");
848 break;
849 case PROCEED:
850 case SESSION_ACCEPTED:
851 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": the call has already been accepted. user probably double tapped the UI");
852 break;
853 default:
854 throw new IllegalStateException("Can not accept call from " + this.state);
855 }
856 }
857
858 public synchronized void rejectCall() {
859 switch (this.state) {
860 case PROPOSED:
861 rejectCallFromProposed();
862 break;
863 case SESSION_INITIALIZED:
864 rejectCallFromSessionInitiate();
865 break;
866 default:
867 throw new IllegalStateException("Can not reject call from " + this.state);
868 }
869 }
870
871 public synchronized void endCall() {
872 if (isTerminated()) {
873 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": received endCall() when session has already been terminated. nothing to do");
874 return;
875 }
876 if (isInState(State.PROPOSED) && !isInitiator()) {
877 rejectCallFromProposed();
878 return;
879 }
880 if (isInState(State.PROCEED)) {
881 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ending call while in state PROCEED just means ending the connection");
882 this.jingleConnectionManager.endSession(id, State.TERMINATED_SUCCESS);
883 this.webRTCWrapper.close();
884 transitionOrThrow(State.TERMINATED_SUCCESS); //arguably this wasn't success; but not a real failure either
885 this.finish();
886 return;
887 }
888 if (isInitiator() && isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED)) {
889 this.webRTCWrapper.close();
890 sendSessionTerminate(Reason.CANCEL);
891 return;
892 }
893 if (isInState(State.SESSION_INITIALIZED)) {
894 rejectCallFromSessionInitiate();
895 return;
896 }
897 if (isInState(State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
898 this.webRTCWrapper.close();
899 sendSessionTerminate(Reason.SUCCESS);
900 return;
901 }
902 if (isInState(State.TERMINATED_APPLICATION_FAILURE, State.TERMINATED_CONNECTIVITY_ERROR, State.TERMINATED_DECLINED_OR_BUSY)) {
903 Log.d(Config.LOGTAG, "ignoring request to end call because already in state " + this.state);
904 return;
905 }
906 throw new IllegalStateException("called 'endCall' while in state " + this.state + ". isInitiator=" + isInitiator());
907 }
908
909 private void setupWebRTC(final Set<Media> media, final List<PeerConnection.IceServer> iceServers) throws WebRTCWrapper.InitializationException {
910 this.jingleConnectionManager.ensureConnectionIsRegistered(this);
911 final AppRTCAudioManager.SpeakerPhonePreference speakerPhonePreference;
912 if (media.contains(Media.VIDEO)) {
913 speakerPhonePreference = AppRTCAudioManager.SpeakerPhonePreference.SPEAKER;
914 } else {
915 speakerPhonePreference = AppRTCAudioManager.SpeakerPhonePreference.EARPIECE;
916 }
917 this.webRTCWrapper.setup(this.xmppConnectionService, speakerPhonePreference);
918 this.webRTCWrapper.initializePeerConnection(media, iceServers);
919 }
920
921 private void acceptCallFromProposed() {
922 transitionOrThrow(State.PROCEED);
923 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
924 this.sendJingleMessage("accept", id.account.getJid().asBareJid());
925 this.sendJingleMessage("proceed");
926 }
927
928 private void rejectCallFromProposed() {
929 transitionOrThrow(State.REJECTED);
930 writeLogMessageMissed();
931 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
932 this.sendJingleMessage("reject");
933 finish();
934 }
935
936 private void rejectCallFromSessionInitiate() {
937 webRTCWrapper.close();
938 sendSessionTerminate(Reason.DECLINE);
939 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
940 }
941
942 private void sendJingleMessage(final String action) {
943 sendJingleMessage(action, id.with);
944 }
945
946 private void sendJingleMessage(final String action, final Jid to) {
947 final MessagePacket messagePacket = new MessagePacket();
948 if ("proceed".equals(action)) {
949 messagePacket.setId(JINGLE_MESSAGE_PROCEED_ID_PREFIX + id.sessionId);
950 }
951 messagePacket.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
952 messagePacket.setTo(to);
953 messagePacket.addChild(action, Namespace.JINGLE_MESSAGE).setAttribute("id", id.sessionId);
954 messagePacket.addChild("store", "urn:xmpp:hints");
955 xmppConnectionService.sendMessagePacket(id.account, messagePacket);
956 }
957
958 private void acceptCallFromSessionInitialized() {
959 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
960 sendSessionAccept();
961 }
962
963 private synchronized boolean isInState(State... state) {
964 return Arrays.asList(state).contains(this.state);
965 }
966
967 private boolean transition(final State target) {
968 return transition(target, null);
969 }
970
971 private synchronized boolean transition(final State target, final Runnable runnable) {
972 final Collection<State> validTransitions = VALID_TRANSITIONS.get(this.state);
973 if (validTransitions != null && validTransitions.contains(target)) {
974 this.state = target;
975 if (runnable != null) {
976 runnable.run();
977 }
978 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": transitioned into " + target);
979 updateEndUserState();
980 updateOngoingCallNotification();
981 return true;
982 } else {
983 return false;
984 }
985 }
986
987 void transitionOrThrow(final State target) {
988 if (!transition(target)) {
989 throw new IllegalStateException(String.format("Unable to transition from %s to %s", this.state, target));
990 }
991 }
992
993 @Override
994 public void onIceCandidate(final IceCandidate iceCandidate) {
995 final IceUdpTransportInfo.Candidate candidate = IceUdpTransportInfo.Candidate.fromSdpAttribute(iceCandidate.sdp);
996 Log.d(Config.LOGTAG, "sending candidate: " + iceCandidate.toString());
997 sendTransportInfo(iceCandidate.sdpMid, candidate);
998 }
999
1000 @Override
1001 public void onConnectionChange(final PeerConnection.PeerConnectionState newState) {
1002 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": PeerConnectionState changed to " + newState);
1003 if (newState == PeerConnection.PeerConnectionState.CONNECTED && this.rtpConnectionStarted == 0) {
1004 this.rtpConnectionStarted = SystemClock.elapsedRealtime();
1005 }
1006 //TODO 'DISCONNECTED' might be an opportunity to renew the offer and send a transport-replace
1007 //TODO exact syntax is yet to be determined but transport-replace sounds like the most reasonable
1008 //as there is no content-replace
1009 if (Arrays.asList(PeerConnection.PeerConnectionState.FAILED, PeerConnection.PeerConnectionState.DISCONNECTED).contains(newState)) {
1010 if (isTerminated()) {
1011 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": not sending session-terminate after connectivity error because session is already in state " + this.state);
1012 return;
1013 }
1014 new Thread(this::closeWebRTCSessionAfterFailedConnection).start();
1015 } else {
1016 updateEndUserState();
1017 }
1018 }
1019
1020 private void closeWebRTCSessionAfterFailedConnection() {
1021 this.webRTCWrapper.close();
1022 synchronized (this) {
1023 if (isTerminated()) {
1024 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": no need to send session-terminate after failed connection. Other party already did");
1025 return;
1026 }
1027 sendSessionTerminate(Reason.CONNECTIVITY_ERROR);
1028 }
1029 }
1030
1031 public AppRTCAudioManager getAudioManager() {
1032 return webRTCWrapper.getAudioManager();
1033 }
1034
1035 public boolean isMicrophoneEnabled() {
1036 return webRTCWrapper.isMicrophoneEnabled();
1037 }
1038
1039 public void setMicrophoneEnabled(final boolean enabled) {
1040 webRTCWrapper.setMicrophoneEnabled(enabled);
1041 }
1042
1043 public boolean isVideoEnabled() {
1044 return webRTCWrapper.isVideoEnabled();
1045 }
1046
1047
1048 public boolean isCameraSwitchable() {
1049 return webRTCWrapper.isCameraSwitchable();
1050 }
1051
1052 public boolean isFrontCamera() {
1053 return webRTCWrapper.isFrontCamera();
1054 }
1055
1056 public ListenableFuture<Boolean> switchCamera() {
1057 return webRTCWrapper.switchCamera();
1058 }
1059
1060 public void setVideoEnabled(final boolean enabled) {
1061 webRTCWrapper.setVideoEnabled(enabled);
1062 }
1063
1064 @Override
1065 public void onAudioDeviceChanged(AppRTCAudioManager.AudioDevice selectedAudioDevice, Set<AppRTCAudioManager.AudioDevice> availableAudioDevices) {
1066 xmppConnectionService.notifyJingleRtpConnectionUpdate(selectedAudioDevice, availableAudioDevices);
1067 }
1068
1069 private void updateEndUserState() {
1070 final RtpEndUserState endUserState = getEndUserState();
1071 jingleConnectionManager.toneManager.transition(isInitiator(), endUserState, getMedia());
1072 xmppConnectionService.notifyJingleRtpConnectionUpdate(id.account, id.with, id.sessionId, endUserState);
1073 }
1074
1075 private void updateOngoingCallNotification() {
1076 if (STATES_SHOWING_ONGOING_CALL.contains(this.state)) {
1077 xmppConnectionService.setOngoingCall(id, getMedia());
1078 } else {
1079 xmppConnectionService.removeOngoingCall();
1080 }
1081 }
1082
1083 private void discoverIceServers(final OnIceServersDiscovered onIceServersDiscovered) {
1084 if (id.account.getXmppConnection().getFeatures().externalServiceDiscovery()) {
1085 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1086 request.setTo(Jid.of(id.account.getJid().getDomain()));
1087 request.addChild("services", Namespace.EXTERNAL_SERVICE_DISCOVERY);
1088 xmppConnectionService.sendIqPacket(id.account, request, (account, response) -> {
1089 ImmutableList.Builder<PeerConnection.IceServer> listBuilder = new ImmutableList.Builder<>();
1090 if (response.getType() == IqPacket.TYPE.RESULT) {
1091 final Element services = response.findChild("services", Namespace.EXTERNAL_SERVICE_DISCOVERY);
1092 final List<Element> children = services == null ? Collections.emptyList() : services.getChildren();
1093 for (final Element child : children) {
1094 if ("service".equals(child.getName())) {
1095 final String type = child.getAttribute("type");
1096 final String host = child.getAttribute("host");
1097 final String sport = child.getAttribute("port");
1098 final Integer port = sport == null ? null : Ints.tryParse(sport);
1099 final String transport = child.getAttribute("transport");
1100 final String username = child.getAttribute("username");
1101 final String password = child.getAttribute("password");
1102 if (Strings.isNullOrEmpty(host) || port == null) {
1103 continue;
1104 }
1105 if (port < 0 || port > 65535) {
1106 continue;
1107 }
1108 if (Arrays.asList("stun", "stuns", "turn", "turns").contains(type) && Arrays.asList("udp", "tcp").contains(transport)) {
1109 if (Arrays.asList("stuns", "turns").contains(type) && "udp".equals(transport)) {
1110 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": skipping invalid combination of udp/tls in external services");
1111 continue;
1112 }
1113 final PeerConnection.IceServer.Builder iceServerBuilder = PeerConnection.IceServer
1114 .builder(String.format("%s:%s:%s?transport=%s", type, IP.wrapIPv6(host), port, transport));
1115 iceServerBuilder.setTlsCertPolicy(PeerConnection.TlsCertPolicy.TLS_CERT_POLICY_INSECURE_NO_CHECK);
1116 if (username != null && password != null) {
1117 iceServerBuilder.setUsername(username);
1118 iceServerBuilder.setPassword(password);
1119 } else if (Arrays.asList("turn", "turns").contains(type)) {
1120 //The WebRTC spec requires throwing an InvalidAccessError when username (from libwebrtc source coder)
1121 //https://chromium.googlesource.com/external/webrtc/+/master/pc/ice_server_parsing.cc
1122 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": skipping " + type + "/" + transport + " without username and password");
1123 continue;
1124 }
1125 final PeerConnection.IceServer iceServer = iceServerBuilder.createIceServer();
1126 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": discovered ICE Server: " + iceServer);
1127 listBuilder.add(iceServer);
1128 }
1129 }
1130 }
1131 }
1132 List<PeerConnection.IceServer> iceServers = listBuilder.build();
1133 if (iceServers.size() == 0) {
1134 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": no ICE server found " + response);
1135 }
1136 onIceServersDiscovered.onIceServersDiscovered(iceServers);
1137 });
1138 } else {
1139 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": has no external service discovery");
1140 onIceServersDiscovered.onIceServersDiscovered(Collections.emptyList());
1141 }
1142 }
1143
1144 private void finish() {
1145 this.cancelRingingTimeout();
1146 this.webRTCWrapper.verifyClosed();
1147 this.jingleConnectionManager.finishConnection(this);
1148 }
1149
1150 private void writeLogMessage(final State state) {
1151 final long started = this.rtpConnectionStarted;
1152 long duration = started <= 0 ? 0 : SystemClock.elapsedRealtime() - started;
1153 if (state == State.TERMINATED_SUCCESS || (state == State.TERMINATED_CONNECTIVITY_ERROR && duration > 0)) {
1154 writeLogMessageSuccess(duration);
1155 } else {
1156 writeLogMessageMissed();
1157 }
1158 }
1159
1160 private void writeLogMessageSuccess(final long duration) {
1161 this.message.setBody(new RtpSessionStatus(true, duration).toString());
1162 this.writeMessage();
1163 }
1164
1165 private void writeLogMessageMissed() {
1166 this.message.setBody(new RtpSessionStatus(false, 0).toString());
1167 this.writeMessage();
1168 }
1169
1170 private void writeMessage() {
1171 final Conversational conversational = message.getConversation();
1172 if (conversational instanceof Conversation) {
1173 ((Conversation) conversational).add(this.message);
1174 xmppConnectionService.databaseBackend.createMessage(message);
1175 xmppConnectionService.updateConversationUi();
1176 } else {
1177 throw new IllegalStateException("Somehow the conversation in a message was a stub");
1178 }
1179 }
1180
1181 public State getState() {
1182 return this.state;
1183 }
1184
1185 boolean isTerminated() {
1186 return TERMINATED.contains(this.state);
1187 }
1188
1189 public Optional<VideoTrack> getLocalVideoTrack() {
1190 return webRTCWrapper.getLocalVideoTrack();
1191 }
1192
1193 public Optional<VideoTrack> getRemoteVideoTrack() {
1194 return webRTCWrapper.getRemoteVideoTrack();
1195 }
1196
1197
1198 public EglBase.Context getEglBaseContext() {
1199 return webRTCWrapper.getEglBaseContext();
1200 }
1201
1202 void setProposedMedia(final Set<Media> media) {
1203 this.proposedMedia = media;
1204 }
1205
1206 private interface OnIceServersDiscovered {
1207 void onIceServersDiscovered(List<PeerConnection.IceServer> iceServers);
1208 }
1209}