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.ACCEPTED,
62 State.REJECTED,
63 State.RETRACTED,
64 State.TERMINATED_SUCCESS,
65 State.TERMINATED_DECLINED_OR_BUSY,
66 State.TERMINATED_CONNECTIVITY_ERROR,
67 State.TERMINATED_CANCEL_OR_TIMEOUT,
68 State.TERMINATED_APPLICATION_FAILURE
69 );
70
71 private static final Map<State, Collection<State>> VALID_TRANSITIONS;
72
73 static {
74 final ImmutableMap.Builder<State, Collection<State>> transitionBuilder = new ImmutableMap.Builder<>();
75 transitionBuilder.put(State.NULL, ImmutableList.of(
76 State.PROPOSED,
77 State.SESSION_INITIALIZED,
78 State.TERMINATED_APPLICATION_FAILURE
79 ));
80 transitionBuilder.put(State.PROPOSED, ImmutableList.of(
81 State.ACCEPTED,
82 State.PROCEED,
83 State.REJECTED,
84 State.RETRACTED,
85 State.TERMINATED_APPLICATION_FAILURE,
86 State.TERMINATED_CONNECTIVITY_ERROR //only used when the xmpp connection rebinds
87 ));
88 transitionBuilder.put(State.PROCEED, ImmutableList.of(
89 State.SESSION_INITIALIZED_PRE_APPROVED,
90 State.TERMINATED_SUCCESS,
91 State.TERMINATED_APPLICATION_FAILURE,
92 State.TERMINATED_CONNECTIVITY_ERROR //at this state used for error bounces of the proceed message
93 ));
94 transitionBuilder.put(State.SESSION_INITIALIZED, ImmutableList.of(
95 State.SESSION_ACCEPTED,
96 State.TERMINATED_SUCCESS,
97 State.TERMINATED_DECLINED_OR_BUSY,
98 State.TERMINATED_CONNECTIVITY_ERROR, //at this state used for IQ errors and IQ timeouts
99 State.TERMINATED_CANCEL_OR_TIMEOUT,
100 State.TERMINATED_APPLICATION_FAILURE
101 ));
102 transitionBuilder.put(State.SESSION_INITIALIZED_PRE_APPROVED, ImmutableList.of(
103 State.SESSION_ACCEPTED,
104 State.TERMINATED_SUCCESS,
105 State.TERMINATED_DECLINED_OR_BUSY,
106 State.TERMINATED_CONNECTIVITY_ERROR, //at this state used for IQ errors and IQ timeouts
107 State.TERMINATED_CANCEL_OR_TIMEOUT,
108 State.TERMINATED_APPLICATION_FAILURE
109 ));
110 transitionBuilder.put(State.SESSION_ACCEPTED, ImmutableList.of(
111 State.TERMINATED_SUCCESS,
112 State.TERMINATED_DECLINED_OR_BUSY,
113 State.TERMINATED_CONNECTIVITY_ERROR,
114 State.TERMINATED_CANCEL_OR_TIMEOUT,
115 State.TERMINATED_APPLICATION_FAILURE
116 ));
117 VALID_TRANSITIONS = transitionBuilder.build();
118 }
119
120 private final WebRTCWrapper webRTCWrapper = new WebRTCWrapper(this);
121 private final ArrayDeque<IceCandidate> pendingIceCandidates = new ArrayDeque<>();
122 private final Message message;
123 private State state = State.NULL;
124 private Set<Media> proposedMedia;
125 private RtpContentMap initiatorRtpContentMap;
126 private RtpContentMap responderRtpContentMap;
127 private long rtpConnectionStarted = 0; //time of 'connected'
128 private long rtpConnectionEnded = 0;
129 private ScheduledFuture<?> ringingTimeoutFuture;
130
131 JingleRtpConnection(JingleConnectionManager jingleConnectionManager, Id id, Jid initiator) {
132 super(jingleConnectionManager, id, initiator);
133 final Conversation conversation = jingleConnectionManager.getXmppConnectionService().findOrCreateConversation(
134 id.account,
135 id.with.asBareJid(),
136 false,
137 false
138 );
139 this.message = new Message(
140 conversation,
141 isInitiator() ? Message.STATUS_SEND : Message.STATUS_RECEIVED,
142 Message.TYPE_RTP_SESSION,
143 id.sessionId
144 );
145 }
146
147 private static State reasonToState(Reason reason) {
148 switch (reason) {
149 case SUCCESS:
150 return State.TERMINATED_SUCCESS;
151 case DECLINE:
152 case BUSY:
153 return State.TERMINATED_DECLINED_OR_BUSY;
154 case CANCEL:
155 case TIMEOUT:
156 return State.TERMINATED_CANCEL_OR_TIMEOUT;
157 case FAILED_APPLICATION:
158 case SECURITY_ERROR:
159 case UNSUPPORTED_TRANSPORTS:
160 case UNSUPPORTED_APPLICATIONS:
161 return State.TERMINATED_APPLICATION_FAILURE;
162 default:
163 return State.TERMINATED_CONNECTIVITY_ERROR;
164 }
165 }
166
167 @Override
168 synchronized void deliverPacket(final JinglePacket jinglePacket) {
169 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": packet delivered to JingleRtpConnection");
170 switch (jinglePacket.getAction()) {
171 case SESSION_INITIATE:
172 receiveSessionInitiate(jinglePacket);
173 break;
174 case TRANSPORT_INFO:
175 receiveTransportInfo(jinglePacket);
176 break;
177 case SESSION_ACCEPT:
178 receiveSessionAccept(jinglePacket);
179 break;
180 case SESSION_TERMINATE:
181 receiveSessionTerminate(jinglePacket);
182 break;
183 default:
184 respondOk(jinglePacket);
185 Log.d(Config.LOGTAG, String.format("%s: received unhandled jingle action %s", id.account.getJid().asBareJid(), jinglePacket.getAction()));
186 break;
187 }
188 }
189
190 @Override
191 synchronized void notifyRebound() {
192 if (isTerminated()) {
193 return;
194 }
195 webRTCWrapper.close();
196 if (!isInitiator() && isInState(State.PROPOSED, State.SESSION_INITIALIZED)) {
197 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
198 }
199 if (isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
200 //we might have already changed resources (full jid) at this point; so this might not even reach the other party
201 sendSessionTerminate(Reason.CONNECTIVITY_ERROR);
202 } else {
203 transitionOrThrow(State.TERMINATED_CONNECTIVITY_ERROR);
204 finish();
205 }
206 }
207
208 private void receiveSessionTerminate(final JinglePacket jinglePacket) {
209 respondOk(jinglePacket);
210 final JinglePacket.ReasonWrapper wrapper = jinglePacket.getReason();
211 final State previous = this.state;
212 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received session terminate reason=" + wrapper.reason + "(" + Strings.nullToEmpty(wrapper.text) + ") while in state " + previous);
213 if (TERMINATED.contains(previous)) {
214 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring session terminate because already in " + previous);
215 return;
216 }
217 webRTCWrapper.close();
218 final State target = reasonToState(wrapper.reason);
219 transitionOrThrow(target);
220 writeLogMessage(target);
221 if (previous == State.PROPOSED || previous == State.SESSION_INITIALIZED) {
222 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
223 }
224 finish();
225 }
226
227 private void receiveTransportInfo(final JinglePacket jinglePacket) {
228 if (isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
229 respondOk(jinglePacket);
230 final RtpContentMap contentMap;
231 try {
232 contentMap = RtpContentMap.of(jinglePacket);
233 } catch (IllegalArgumentException | NullPointerException e) {
234 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents; ignoring", e);
235 return;
236 }
237 final RtpContentMap rtpContentMap = isInitiator() ? this.responderRtpContentMap : this.initiatorRtpContentMap;
238 final Group originalGroup = rtpContentMap != null ? rtpContentMap.group : null;
239 final List<String> identificationTags = originalGroup == null ? Collections.emptyList() : originalGroup.getIdentificationTags();
240 if (identificationTags.size() == 0) {
241 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": no identification tags found in initial offer. we won't be able to calculate mLineIndices");
242 }
243 receiveCandidates(identificationTags, contentMap.contents.entrySet());
244 } else {
245 if (isTerminated()) {
246 respondOk(jinglePacket);
247 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring out-of-order transport info; we where already terminated");
248 } else {
249 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received transport info while in state=" + this.state);
250 terminateWithOutOfOrder(jinglePacket);
251 }
252 }
253 }
254
255 private void receiveCandidates(final List<String> identificationTags, final Set<Map.Entry<String, RtpContentMap.DescriptionTransport>> contents) {
256 for (final Map.Entry<String, RtpContentMap.DescriptionTransport> content : contents) {
257 final String ufrag = content.getValue().transport.getAttribute("ufrag");
258 for (final IceUdpTransportInfo.Candidate candidate : content.getValue().transport.getCandidates()) {
259 final String sdp;
260 try {
261 sdp = candidate.toSdpAttribute(ufrag);
262 } catch (IllegalArgumentException e) {
263 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring invalid ICE candidate " + e.getMessage());
264 continue;
265 }
266 final String sdpMid = content.getKey();
267 final int mLineIndex = identificationTags.indexOf(sdpMid);
268 final IceCandidate iceCandidate = new IceCandidate(sdpMid, mLineIndex, sdp);
269 if (isInState(State.SESSION_ACCEPTED)) {
270 Log.d(Config.LOGTAG, "received candidate: " + iceCandidate);
271 this.webRTCWrapper.addIceCandidate(iceCandidate);
272 } else {
273 this.pendingIceCandidates.offer(iceCandidate);
274 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": put ICE candidate on backlog");
275 }
276 }
277 }
278 }
279
280 private void receiveSessionInitiate(final JinglePacket jinglePacket) {
281 if (isInitiator()) {
282 Log.d(Config.LOGTAG, String.format("%s: received session-initiate even though we were initiating", id.account.getJid().asBareJid()));
283 terminateWithOutOfOrder(jinglePacket);
284 return;
285 }
286 final RtpContentMap contentMap;
287 try {
288 contentMap = RtpContentMap.of(jinglePacket);
289 contentMap.requireContentDescriptions();
290 contentMap.requireDTLSFingerprint();
291 } catch (final RuntimeException e) {
292 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents", Throwables.getRootCause(e));
293 respondOk(jinglePacket);
294 sendSessionTerminate(Reason.of(e), e.getMessage());
295 return;
296 }
297 Log.d(Config.LOGTAG, "processing session-init with " + contentMap.contents.size() + " contents");
298 final State target;
299 if (this.state == State.PROCEED) {
300 Preconditions.checkState(
301 proposedMedia != null && proposedMedia.size() > 0,
302 "proposed media must be set when processing pre-approved session-initiate"
303 );
304 if (!this.proposedMedia.equals(contentMap.getMedia())) {
305 sendSessionTerminate(Reason.SECURITY_ERROR, String.format(
306 "Your session proposal (Jingle Message Initiation) included media %s but your session-initiate was %s",
307 this.proposedMedia,
308 contentMap.getMedia()
309 ));
310 return;
311 }
312 target = State.SESSION_INITIALIZED_PRE_APPROVED;
313 } else {
314 target = State.SESSION_INITIALIZED;
315 }
316 if (transition(target, () -> this.initiatorRtpContentMap = contentMap)) {
317 respondOk(jinglePacket);
318 final List<String> identificationTags = contentMap.group == null ? Collections.emptyList() : contentMap.group.getIdentificationTags();
319 receiveCandidates(identificationTags, contentMap.contents.entrySet());
320 if (target == State.SESSION_INITIALIZED_PRE_APPROVED) {
321 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": automatically accepting session-initiate");
322 sendSessionAccept();
323 } else {
324 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received not pre-approved session-initiate. start ringing");
325 startRinging();
326 }
327 } else {
328 Log.d(Config.LOGTAG, String.format("%s: received session-initiate while in state %s", id.account.getJid().asBareJid(), state));
329 terminateWithOutOfOrder(jinglePacket);
330 }
331 }
332
333 private void receiveSessionAccept(final JinglePacket jinglePacket) {
334 if (!isInitiator()) {
335 Log.d(Config.LOGTAG, String.format("%s: received session-accept even though we were responding", id.account.getJid().asBareJid()));
336 terminateWithOutOfOrder(jinglePacket);
337 return;
338 }
339 final RtpContentMap contentMap;
340 try {
341 contentMap = RtpContentMap.of(jinglePacket);
342 contentMap.requireContentDescriptions();
343 contentMap.requireDTLSFingerprint();
344 } catch (final RuntimeException e) {
345 respondOk(jinglePacket);
346 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents in session-accept", e);
347 webRTCWrapper.close();
348 sendSessionTerminate(Reason.of(e), e.getMessage());
349 return;
350 }
351 final Set<Media> initiatorMedia = this.initiatorRtpContentMap.getMedia();
352 if (!initiatorMedia.equals(contentMap.getMedia())) {
353 sendSessionTerminate(Reason.SECURITY_ERROR, String.format(
354 "Your session-included included media %s but our session-initiate was %s",
355 this.proposedMedia,
356 contentMap.getMedia()
357 ));
358 return;
359 }
360 Log.d(Config.LOGTAG, "processing session-accept with " + contentMap.contents.size() + " contents");
361 if (transition(State.SESSION_ACCEPTED)) {
362 respondOk(jinglePacket);
363 receiveSessionAccept(contentMap);
364 final List<String> identificationTags = contentMap.group == null ? Collections.emptyList() : contentMap.group.getIdentificationTags();
365 receiveCandidates(identificationTags, contentMap.contents.entrySet());
366 } else {
367 Log.d(Config.LOGTAG, String.format("%s: received session-accept while in state %s", id.account.getJid().asBareJid(), state));
368 respondOk(jinglePacket);
369 }
370 }
371
372 private void receiveSessionAccept(final RtpContentMap contentMap) {
373 this.responderRtpContentMap = contentMap;
374 final SessionDescription sessionDescription;
375 try {
376 sessionDescription = SessionDescription.of(contentMap);
377 } catch (final IllegalArgumentException | NullPointerException e) {
378 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable convert offer from session-accept to SDP", e);
379 webRTCWrapper.close();
380 sendSessionTerminate(Reason.FAILED_APPLICATION, e.getMessage());
381 return;
382 }
383 org.webrtc.SessionDescription answer = new org.webrtc.SessionDescription(
384 org.webrtc.SessionDescription.Type.ANSWER,
385 sessionDescription.toString()
386 );
387 try {
388 this.webRTCWrapper.setRemoteDescription(answer).get();
389 } catch (final Exception e) {
390 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to set remote description after receiving session-accept", Throwables.getRootCause(e));
391 webRTCWrapper.close();
392 sendSessionTerminate(Reason.FAILED_APPLICATION);
393 }
394 }
395
396 private void sendSessionAccept() {
397 final RtpContentMap rtpContentMap = this.initiatorRtpContentMap;
398 if (rtpContentMap == null) {
399 throw new IllegalStateException("initiator RTP Content Map has not been set");
400 }
401 final SessionDescription offer;
402 try {
403 offer = SessionDescription.of(rtpContentMap);
404 } catch (final IllegalArgumentException | NullPointerException e) {
405 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable convert offer from session-initiate to SDP", e);
406 webRTCWrapper.close();
407 sendSessionTerminate(Reason.FAILED_APPLICATION, e.getMessage());
408 return;
409 }
410 sendSessionAccept(rtpContentMap.getMedia(), offer);
411 }
412
413 private void sendSessionAccept(final Set<Media> media, final SessionDescription offer) {
414 discoverIceServers(iceServers -> sendSessionAccept(media, offer, iceServers));
415 }
416
417 private synchronized void sendSessionAccept(final Set<Media> media, final SessionDescription offer, final List<PeerConnection.IceServer> iceServers) {
418 if (isTerminated()) {
419 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": ICE servers got discovered when session was already terminated. nothing to do.");
420 return;
421 }
422 try {
423 setupWebRTC(media, iceServers);
424 } catch (final WebRTCWrapper.InitializationException e) {
425 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to initialize WebRTC");
426 webRTCWrapper.close();
427 sendSessionTerminate(Reason.FAILED_APPLICATION);
428 return;
429 }
430 final org.webrtc.SessionDescription sdp = new org.webrtc.SessionDescription(
431 org.webrtc.SessionDescription.Type.OFFER,
432 offer.toString()
433 );
434 try {
435 this.webRTCWrapper.setRemoteDescription(sdp).get();
436 addIceCandidatesFromBlackLog();
437 org.webrtc.SessionDescription webRTCSessionDescription = this.webRTCWrapper.createAnswer().get();
438 final SessionDescription sessionDescription = SessionDescription.parse(webRTCSessionDescription.description);
439 final RtpContentMap respondingRtpContentMap = RtpContentMap.of(sessionDescription);
440 sendSessionAccept(respondingRtpContentMap);
441 this.webRTCWrapper.setLocalDescription(webRTCSessionDescription).get();
442 } catch (final Exception e) {
443 Log.d(Config.LOGTAG, "unable to send session accept", Throwables.getRootCause(e));
444 webRTCWrapper.close();
445 sendSessionTerminate(Reason.FAILED_APPLICATION);
446 }
447 }
448
449 private void addIceCandidatesFromBlackLog() {
450 while (!this.pendingIceCandidates.isEmpty()) {
451 final IceCandidate iceCandidate = this.pendingIceCandidates.poll();
452 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": added ICE candidate from back log " + iceCandidate);
453 this.webRTCWrapper.addIceCandidate(iceCandidate);
454 }
455 }
456
457 private void sendSessionAccept(final RtpContentMap rtpContentMap) {
458 this.responderRtpContentMap = rtpContentMap;
459 this.transitionOrThrow(State.SESSION_ACCEPTED);
460 final JinglePacket sessionAccept = rtpContentMap.toJinglePacket(JinglePacket.Action.SESSION_ACCEPT, id.sessionId);
461 Log.d(Config.LOGTAG, sessionAccept.toString());
462 send(sessionAccept);
463 }
464
465 synchronized void deliveryMessage(final Jid from, final Element message, final String serverMessageId, final long timestamp) {
466 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": delivered message to JingleRtpConnection " + message);
467 switch (message.getName()) {
468 case "propose":
469 receivePropose(from, Propose.upgrade(message), serverMessageId, timestamp);
470 break;
471 case "proceed":
472 receiveProceed(from, serverMessageId, timestamp);
473 break;
474 case "retract":
475 receiveRetract(from, serverMessageId, timestamp);
476 break;
477 case "reject":
478 receiveReject(from, serverMessageId, timestamp);
479 break;
480 case "accept":
481 receiveAccept(from, serverMessageId, timestamp);
482 break;
483 default:
484 break;
485 }
486 }
487
488 void deliverFailedProceed() {
489 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": receive message error for proceed message");
490 if (transition(State.TERMINATED_CONNECTIVITY_ERROR)) {
491 webRTCWrapper.close();
492 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": transitioned into connectivity error");
493 this.finish();
494 }
495 }
496
497 private void receiveAccept(final Jid from, final String serverMsgId, final long timestamp) {
498 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
499 if (originatedFromMyself) {
500 if (transition(State.ACCEPTED)) {
501 if (serverMsgId != null) {
502 this.message.setServerMsgId(serverMsgId);
503 }
504 this.message.setTime(timestamp);
505 this.message.setCarbon(true); //indicate that call was accepted on other device
506 this.writeLogMessageSuccess(0);
507 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
508 this.finish();
509 } else {
510 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to transition to accept because already in state=" + this.state);
511 }
512 } else {
513 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring 'accept' from " + from);
514 }
515 }
516
517 private void receiveReject(Jid from, String serverMsgId, long timestamp) {
518 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
519 //reject from another one of my clients
520 if (originatedFromMyself) {
521 if (transition(State.REJECTED)) {
522 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
523 this.finish();
524 if (serverMsgId != null) {
525 this.message.setServerMsgId(serverMsgId);
526 }
527 this.message.setTime(timestamp);
528 this.message.setCarbon(true); //indicate that call was rejected on other device
529 writeLogMessageMissed();
530 } else {
531 Log.d(Config.LOGTAG, "not able to transition into REJECTED because already in " + this.state);
532 }
533 } else {
534 Log.d(Config.LOGTAG, id.account.getJid() + ": ignoring reject from " + from + " for session with " + id.with);
535 }
536 }
537
538 private void receivePropose(final Jid from, final Propose propose, final String serverMsgId, final long timestamp) {
539 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
540 if (originatedFromMyself) {
541 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": saw proposal from mysql. ignoring");
542 } else if (transition(State.PROPOSED, () -> {
543 final Collection<RtpDescription> descriptions = Collections2.transform(
544 Collections2.filter(propose.getDescriptions(), d -> d instanceof RtpDescription),
545 input -> (RtpDescription) input
546 );
547 final Collection<Media> media = Collections2.transform(descriptions, RtpDescription::getMedia);
548 Preconditions.checkState(!media.contains(Media.UNKNOWN), "RTP descriptions contain unknown media");
549 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received session proposal from " + from + " for " + media);
550 this.proposedMedia = Sets.newHashSet(media);
551 })) {
552 if (serverMsgId != null) {
553 this.message.setServerMsgId(serverMsgId);
554 }
555 this.message.setTime(timestamp);
556 startRinging();
557 } else {
558 Log.d(Config.LOGTAG, id.account.getJid() + ": ignoring session proposal because already in " + state);
559 }
560 }
561
562 private void startRinging() {
563 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received call from " + id.with + ". start ringing");
564 ringingTimeoutFuture = jingleConnectionManager.schedule(this::ringingTimeout, BUSY_TIME_OUT, TimeUnit.SECONDS);
565 xmppConnectionService.getNotificationService().showIncomingCallNotification(id, getMedia());
566 }
567
568 private synchronized void ringingTimeout() {
569 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": timeout reached for ringing");
570 switch (this.state) {
571 case PROPOSED:
572 message.markUnread();
573 rejectCallFromProposed();
574 break;
575 case SESSION_INITIALIZED:
576 message.markUnread();
577 rejectCallFromSessionInitiate();
578 break;
579 }
580 }
581
582 private void cancelRingingTimeout() {
583 final ScheduledFuture<?> future = this.ringingTimeoutFuture;
584 if (future != null && !future.isCancelled()) {
585 future.cancel(false);
586 }
587 }
588
589 private void receiveProceed(final Jid from, final String serverMsgId, final long timestamp) {
590 final Set<Media> media = Preconditions.checkNotNull(this.proposedMedia, "Proposed media has to be set before handling proceed");
591 Preconditions.checkState(media.size() > 0, "Proposed media should not be empty");
592 if (from.equals(id.with)) {
593 if (isInitiator()) {
594 if (transition(State.PROCEED)) {
595 if (serverMsgId != null) {
596 this.message.setServerMsgId(serverMsgId);
597 }
598 this.message.setTime(timestamp);
599 this.sendSessionInitiate(media, State.SESSION_INITIALIZED_PRE_APPROVED);
600 } else {
601 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because already in %s", id.account.getJid().asBareJid(), this.state));
602 }
603 } else {
604 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because we were not initializing", id.account.getJid().asBareJid()));
605 }
606 } else if (from.asBareJid().equals(id.account.getJid().asBareJid())) {
607 if (transition(State.ACCEPTED)) {
608 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": moved session with " + id.with + " into state accepted after received carbon copied procced");
609 this.xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
610 this.finish();
611 }
612 } else {
613 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed from %s. was expected from %s", id.account.getJid().asBareJid(), from, id.with));
614 }
615 }
616
617 private void receiveRetract(final Jid from, final String serverMsgId, final long timestamp) {
618 if (from.equals(id.with)) {
619 if (transition(State.RETRACTED)) {
620 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
621 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": session with " + id.with + " has been retracted (serverMsgId=" + serverMsgId + ")");
622 if (serverMsgId != null) {
623 this.message.setServerMsgId(serverMsgId);
624 }
625 this.message.setTime(timestamp);
626 this.message.markUnread();
627 writeLogMessageMissed();
628 finish();
629 } else {
630 Log.d(Config.LOGTAG, "ignoring retract because already in " + this.state);
631 }
632 } else {
633 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received retract from " + from + ". expected retract from" + id.with + ". ignoring");
634 }
635 }
636
637 private void sendSessionInitiate(final Set<Media> media, final State targetState) {
638 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": prepare session-initiate");
639 discoverIceServers(iceServers -> sendSessionInitiate(media, targetState, iceServers));
640 }
641
642 private synchronized void sendSessionInitiate(final Set<Media> media, final State targetState, final List<PeerConnection.IceServer> iceServers) {
643 if (isTerminated()) {
644 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": ICE servers got discovered when session was already terminated. nothing to do.");
645 return;
646 }
647 try {
648 setupWebRTC(media, iceServers);
649 } catch (final WebRTCWrapper.InitializationException e) {
650 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to initialize WebRTC");
651 webRTCWrapper.close();
652 //todo we haven’t actually initiated the session yet; so sending sessionTerminate makes no sense
653 //todo either we don’t ring ever at all or maybe we should send a retract or something
654 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
655 this.finish();
656 return;
657 }
658 try {
659 org.webrtc.SessionDescription webRTCSessionDescription = this.webRTCWrapper.createOffer().get();
660 final SessionDescription sessionDescription = SessionDescription.parse(webRTCSessionDescription.description);
661 final RtpContentMap rtpContentMap = RtpContentMap.of(sessionDescription);
662 sendSessionInitiate(rtpContentMap, targetState);
663 this.webRTCWrapper.setLocalDescription(webRTCSessionDescription).get();
664 } catch (final Exception e) {
665 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to sendSessionInitiate", Throwables.getRootCause(e));
666 webRTCWrapper.close();
667 if (isInState(targetState)) {
668 sendSessionTerminate(Reason.FAILED_APPLICATION);
669 } else {
670 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
671 this.finish();
672 }
673 }
674 }
675
676 private void sendSessionInitiate(RtpContentMap rtpContentMap, final State targetState) {
677 this.initiatorRtpContentMap = rtpContentMap;
678 this.transitionOrThrow(targetState);
679 final JinglePacket sessionInitiate = rtpContentMap.toJinglePacket(JinglePacket.Action.SESSION_INITIATE, id.sessionId);
680 send(sessionInitiate);
681 }
682
683 private void sendSessionTerminate(final Reason reason) {
684 sendSessionTerminate(reason, null);
685 }
686
687 private void sendSessionTerminate(final Reason reason, final String text) {
688 final State previous = this.state;
689 final State target = reasonToState(reason);
690 transitionOrThrow(target);
691 if (previous != State.NULL) {
692 writeLogMessage(target);
693 }
694 final JinglePacket jinglePacket = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
695 jinglePacket.setReason(reason, text);
696 Log.d(Config.LOGTAG, jinglePacket.toString());
697 send(jinglePacket);
698 finish();
699 }
700
701 private void sendTransportInfo(final String contentName, IceUdpTransportInfo.Candidate candidate) {
702 final RtpContentMap transportInfo;
703 try {
704 final RtpContentMap rtpContentMap = isInitiator() ? this.initiatorRtpContentMap : this.responderRtpContentMap;
705 transportInfo = rtpContentMap.transportInfo(contentName, candidate);
706 } catch (final Exception e) {
707 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": unable to prepare transport-info from candidate for content=" + contentName);
708 return;
709 }
710 final JinglePacket jinglePacket = transportInfo.toJinglePacket(JinglePacket.Action.TRANSPORT_INFO, id.sessionId);
711 send(jinglePacket);
712 }
713
714 private void send(final JinglePacket jinglePacket) {
715 jinglePacket.setTo(id.with);
716 xmppConnectionService.sendIqPacket(id.account, jinglePacket, this::handleIqResponse);
717 }
718
719 private synchronized void handleIqResponse(final Account account, final IqPacket response) {
720 if (response.getType() == IqPacket.TYPE.ERROR) {
721 final String errorCondition = response.getErrorCondition();
722 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received IQ-error from " + response.getFrom() + " in RTP session. " + errorCondition);
723 if (isTerminated()) {
724 Log.i(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring error because session was already terminated");
725 return;
726 }
727 this.webRTCWrapper.close();
728 final State target;
729 if (Arrays.asList(
730 "service-unavailable",
731 "recipient-unavailable",
732 "remote-server-not-found",
733 "remote-server-timeout"
734 ).contains(errorCondition)) {
735 target = State.TERMINATED_CONNECTIVITY_ERROR;
736 } else {
737 target = State.TERMINATED_APPLICATION_FAILURE;
738 }
739 transitionOrThrow(target);
740 this.finish();
741 } else if (response.getType() == IqPacket.TYPE.TIMEOUT) {
742 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": received IQ timeout in RTP session with " + id.with + ". terminating with connectivity error");
743 if (isTerminated()) {
744 Log.i(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring error because session was already terminated");
745 return;
746 }
747 this.webRTCWrapper.close();
748 transitionOrThrow(State.TERMINATED_CONNECTIVITY_ERROR);
749 this.finish();
750 }
751 }
752
753 private void terminateWithOutOfOrder(final JinglePacket jinglePacket) {
754 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": terminating session with out-of-order");
755 this.webRTCWrapper.close();
756 transitionOrThrow(State.TERMINATED_APPLICATION_FAILURE);
757 respondWithOutOfOrder(jinglePacket);
758 this.finish();
759 }
760
761 private void respondWithOutOfOrder(final JinglePacket jinglePacket) {
762 jingleConnectionManager.respondWithJingleError(id.account, jinglePacket, "out-of-order", "unexpected-request", "wait");
763 }
764
765 private void respondOk(final JinglePacket jinglePacket) {
766 xmppConnectionService.sendIqPacket(id.account, jinglePacket.generateResponse(IqPacket.TYPE.RESULT), null);
767 }
768
769 public RtpEndUserState getEndUserState() {
770 switch (this.state) {
771 case PROPOSED:
772 case SESSION_INITIALIZED:
773 if (isInitiator()) {
774 return RtpEndUserState.RINGING;
775 } else {
776 return RtpEndUserState.INCOMING_CALL;
777 }
778 case PROCEED:
779 if (isInitiator()) {
780 return RtpEndUserState.RINGING;
781 } else {
782 return RtpEndUserState.ACCEPTING_CALL;
783 }
784 case SESSION_INITIALIZED_PRE_APPROVED:
785 if (isInitiator()) {
786 return RtpEndUserState.RINGING;
787 } else {
788 return RtpEndUserState.CONNECTING;
789 }
790 case SESSION_ACCEPTED:
791 final PeerConnection.PeerConnectionState state = webRTCWrapper.getState();
792 if (state == PeerConnection.PeerConnectionState.CONNECTED) {
793 return RtpEndUserState.CONNECTED;
794 } else if (state == PeerConnection.PeerConnectionState.NEW || state == PeerConnection.PeerConnectionState.CONNECTING) {
795 return RtpEndUserState.CONNECTING;
796 } else if (state == PeerConnection.PeerConnectionState.CLOSED) {
797 return RtpEndUserState.ENDING_CALL;
798 } else {
799 return RtpEndUserState.CONNECTIVITY_ERROR;
800 }
801 case REJECTED:
802 case TERMINATED_DECLINED_OR_BUSY:
803 if (isInitiator()) {
804 return RtpEndUserState.DECLINED_OR_BUSY;
805 } else {
806 return RtpEndUserState.ENDED;
807 }
808 case TERMINATED_SUCCESS:
809 case ACCEPTED:
810 case RETRACTED:
811 case TERMINATED_CANCEL_OR_TIMEOUT:
812 return RtpEndUserState.ENDED;
813 case TERMINATED_CONNECTIVITY_ERROR:
814 return RtpEndUserState.CONNECTIVITY_ERROR;
815 case TERMINATED_APPLICATION_FAILURE:
816 return RtpEndUserState.APPLICATION_ERROR;
817 }
818 throw new IllegalStateException(String.format("%s has no equivalent EndUserState", this.state));
819 }
820
821 public Set<Media> getMedia() {
822 final State current = getState();
823 if (current == State.NULL) {
824 throw new IllegalStateException("RTP connection has not been initialized yet");
825 }
826 if (Arrays.asList(State.PROPOSED, State.PROCEED).contains(current)) {
827 return Preconditions.checkNotNull(this.proposedMedia, "RTP connection has not been initialized properly");
828 }
829 final RtpContentMap initiatorContentMap = initiatorRtpContentMap;
830 if (initiatorContentMap != null) {
831 return initiatorContentMap.getMedia();
832 } else if (isTerminated()) {
833 return Collections.emptySet(); //we might fail before we ever got a chance to set media
834 } else {
835 return Preconditions.checkNotNull(this.proposedMedia, "RTP connection has not been initialized properly");
836 }
837 }
838
839
840 public synchronized void acceptCall() {
841 switch (this.state) {
842 case PROPOSED:
843 cancelRingingTimeout();
844 acceptCallFromProposed();
845 break;
846 case SESSION_INITIALIZED:
847 cancelRingingTimeout();
848 acceptCallFromSessionInitialized();
849 break;
850 case ACCEPTED:
851 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": the call has already been accepted with another client. UI was just lagging behind");
852 break;
853 case PROCEED:
854 case SESSION_ACCEPTED:
855 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": the call has already been accepted. user probably double tapped the UI");
856 break;
857 default:
858 throw new IllegalStateException("Can not accept call from " + this.state);
859 }
860 }
861
862 public synchronized void rejectCall() {
863 switch (this.state) {
864 case PROPOSED:
865 rejectCallFromProposed();
866 break;
867 case SESSION_INITIALIZED:
868 rejectCallFromSessionInitiate();
869 break;
870 default:
871 throw new IllegalStateException("Can not reject call from " + this.state);
872 }
873 }
874
875 public synchronized void endCall() {
876 if (isTerminated()) {
877 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": received endCall() when session has already been terminated. nothing to do");
878 return;
879 }
880 if (isInState(State.PROPOSED) && !isInitiator()) {
881 rejectCallFromProposed();
882 return;
883 }
884 if (isInState(State.PROCEED)) {
885 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ending call while in state PROCEED just means ending the connection");
886 this.jingleConnectionManager.endSession(id, State.TERMINATED_SUCCESS);
887 this.webRTCWrapper.close();
888 transitionOrThrow(State.TERMINATED_SUCCESS); //arguably this wasn't success; but not a real failure either
889 this.finish();
890 return;
891 }
892 if (isInitiator() && isInState(State.SESSION_INITIALIZED, State.SESSION_INITIALIZED_PRE_APPROVED)) {
893 this.webRTCWrapper.close();
894 sendSessionTerminate(Reason.CANCEL);
895 return;
896 }
897 if (isInState(State.SESSION_INITIALIZED)) {
898 rejectCallFromSessionInitiate();
899 return;
900 }
901 if (isInState(State.SESSION_INITIALIZED_PRE_APPROVED, State.SESSION_ACCEPTED)) {
902 this.webRTCWrapper.close();
903 sendSessionTerminate(Reason.SUCCESS);
904 return;
905 }
906 if (isInState(State.TERMINATED_APPLICATION_FAILURE, State.TERMINATED_CONNECTIVITY_ERROR, State.TERMINATED_DECLINED_OR_BUSY)) {
907 Log.d(Config.LOGTAG, "ignoring request to end call because already in state " + this.state);
908 return;
909 }
910 throw new IllegalStateException("called 'endCall' while in state " + this.state + ". isInitiator=" + isInitiator());
911 }
912
913 private void setupWebRTC(final Set<Media> media, final List<PeerConnection.IceServer> iceServers) throws WebRTCWrapper.InitializationException {
914 this.jingleConnectionManager.ensureConnectionIsRegistered(this);
915 final AppRTCAudioManager.SpeakerPhonePreference speakerPhonePreference;
916 if (media.contains(Media.VIDEO)) {
917 speakerPhonePreference = AppRTCAudioManager.SpeakerPhonePreference.SPEAKER;
918 } else {
919 speakerPhonePreference = AppRTCAudioManager.SpeakerPhonePreference.EARPIECE;
920 }
921 this.webRTCWrapper.setup(this.xmppConnectionService, speakerPhonePreference);
922 this.webRTCWrapper.initializePeerConnection(media, iceServers);
923 }
924
925 private void acceptCallFromProposed() {
926 transitionOrThrow(State.PROCEED);
927 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
928 this.sendJingleMessage("accept", id.account.getJid().asBareJid());
929 this.sendJingleMessage("proceed");
930 }
931
932 private void rejectCallFromProposed() {
933 transitionOrThrow(State.REJECTED);
934 writeLogMessageMissed();
935 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
936 this.sendJingleMessage("reject");
937 finish();
938 }
939
940 private void rejectCallFromSessionInitiate() {
941 webRTCWrapper.close();
942 sendSessionTerminate(Reason.DECLINE);
943 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
944 }
945
946 private void sendJingleMessage(final String action) {
947 sendJingleMessage(action, id.with);
948 }
949
950 private void sendJingleMessage(final String action, final Jid to) {
951 final MessagePacket messagePacket = new MessagePacket();
952 if ("proceed".equals(action)) {
953 messagePacket.setId(JINGLE_MESSAGE_PROCEED_ID_PREFIX + id.sessionId);
954 }
955 messagePacket.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
956 messagePacket.setTo(to);
957 messagePacket.addChild(action, Namespace.JINGLE_MESSAGE).setAttribute("id", id.sessionId);
958 messagePacket.addChild("store", "urn:xmpp:hints");
959 xmppConnectionService.sendMessagePacket(id.account, messagePacket);
960 }
961
962 private void acceptCallFromSessionInitialized() {
963 xmppConnectionService.getNotificationService().cancelIncomingCallNotification();
964 sendSessionAccept();
965 }
966
967 private synchronized boolean isInState(State... state) {
968 return Arrays.asList(state).contains(this.state);
969 }
970
971 private boolean transition(final State target) {
972 return transition(target, null);
973 }
974
975 private synchronized boolean transition(final State target, final Runnable runnable) {
976 final Collection<State> validTransitions = VALID_TRANSITIONS.get(this.state);
977 if (validTransitions != null && validTransitions.contains(target)) {
978 this.state = target;
979 if (runnable != null) {
980 runnable.run();
981 }
982 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": transitioned into " + target);
983 updateEndUserState();
984 updateOngoingCallNotification();
985 return true;
986 } else {
987 return false;
988 }
989 }
990
991 void transitionOrThrow(final State target) {
992 if (!transition(target)) {
993 throw new IllegalStateException(String.format("Unable to transition from %s to %s", this.state, target));
994 }
995 }
996
997 @Override
998 public void onIceCandidate(final IceCandidate iceCandidate) {
999 final IceUdpTransportInfo.Candidate candidate = IceUdpTransportInfo.Candidate.fromSdpAttribute(iceCandidate.sdp);
1000 Log.d(Config.LOGTAG, "sending candidate: " + iceCandidate.toString());
1001 sendTransportInfo(iceCandidate.sdpMid, candidate);
1002 }
1003
1004 @Override
1005 public void onConnectionChange(final PeerConnection.PeerConnectionState newState) {
1006 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": PeerConnectionState changed to " + newState);
1007 if (newState == PeerConnection.PeerConnectionState.CONNECTED && this.rtpConnectionStarted == 0) {
1008 this.rtpConnectionStarted = SystemClock.elapsedRealtime();
1009 }
1010 if (newState == PeerConnection.PeerConnectionState.CLOSED && this.rtpConnectionEnded == 0) {
1011 this.rtpConnectionEnded = SystemClock.elapsedRealtime();
1012 }
1013 //TODO 'DISCONNECTED' might be an opportunity to renew the offer and send a transport-replace
1014 //TODO exact syntax is yet to be determined but transport-replace sounds like the most reasonable
1015 //as there is no content-replace
1016 if (Arrays.asList(PeerConnection.PeerConnectionState.FAILED, PeerConnection.PeerConnectionState.DISCONNECTED).contains(newState)) {
1017 if (isTerminated()) {
1018 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": not sending session-terminate after connectivity error because session is already in state " + this.state);
1019 return;
1020 }
1021 new Thread(this::closeWebRTCSessionAfterFailedConnection).start();
1022 } else {
1023 updateEndUserState();
1024 }
1025 }
1026
1027 private void closeWebRTCSessionAfterFailedConnection() {
1028 this.webRTCWrapper.close();
1029 synchronized (this) {
1030 if (isTerminated()) {
1031 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": no need to send session-terminate after failed connection. Other party already did");
1032 return;
1033 }
1034 sendSessionTerminate(Reason.CONNECTIVITY_ERROR);
1035 }
1036 }
1037
1038 public long getRtpConnectionStarted() {
1039 return this.rtpConnectionStarted;
1040 }
1041
1042 public long getRtpConnectionEnded() {
1043 return this.rtpConnectionEnded;
1044 }
1045
1046 public AppRTCAudioManager getAudioManager() {
1047 return webRTCWrapper.getAudioManager();
1048 }
1049
1050 public boolean isMicrophoneEnabled() {
1051 return webRTCWrapper.isMicrophoneEnabled();
1052 }
1053
1054 public void setMicrophoneEnabled(final boolean enabled) {
1055 webRTCWrapper.setMicrophoneEnabled(enabled);
1056 }
1057
1058 public boolean isVideoEnabled() {
1059 return webRTCWrapper.isVideoEnabled();
1060 }
1061
1062
1063 public boolean isCameraSwitchable() {
1064 return webRTCWrapper.isCameraSwitchable();
1065 }
1066
1067 public boolean isFrontCamera() {
1068 return webRTCWrapper.isFrontCamera();
1069 }
1070
1071 public ListenableFuture<Boolean> switchCamera() {
1072 return webRTCWrapper.switchCamera();
1073 }
1074
1075 public void setVideoEnabled(final boolean enabled) {
1076 webRTCWrapper.setVideoEnabled(enabled);
1077 }
1078
1079 @Override
1080 public void onAudioDeviceChanged(AppRTCAudioManager.AudioDevice selectedAudioDevice, Set<AppRTCAudioManager.AudioDevice> availableAudioDevices) {
1081 xmppConnectionService.notifyJingleRtpConnectionUpdate(selectedAudioDevice, availableAudioDevices);
1082 }
1083
1084 private void updateEndUserState() {
1085 final RtpEndUserState endUserState = getEndUserState();
1086 jingleConnectionManager.toneManager.transition(isInitiator(), endUserState, getMedia());
1087 xmppConnectionService.notifyJingleRtpConnectionUpdate(id.account, id.with, id.sessionId, endUserState);
1088 }
1089
1090 private void updateOngoingCallNotification() {
1091 if (STATES_SHOWING_ONGOING_CALL.contains(this.state)) {
1092 xmppConnectionService.setOngoingCall(id, getMedia());
1093 } else {
1094 xmppConnectionService.removeOngoingCall();
1095 }
1096 }
1097
1098 private void discoverIceServers(final OnIceServersDiscovered onIceServersDiscovered) {
1099 if (id.account.getXmppConnection().getFeatures().externalServiceDiscovery()) {
1100 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1101 request.setTo(Jid.of(id.account.getJid().getDomain()));
1102 request.addChild("services", Namespace.EXTERNAL_SERVICE_DISCOVERY);
1103 xmppConnectionService.sendIqPacket(id.account, request, (account, response) -> {
1104 ImmutableList.Builder<PeerConnection.IceServer> listBuilder = new ImmutableList.Builder<>();
1105 if (response.getType() == IqPacket.TYPE.RESULT) {
1106 final Element services = response.findChild("services", Namespace.EXTERNAL_SERVICE_DISCOVERY);
1107 final List<Element> children = services == null ? Collections.emptyList() : services.getChildren();
1108 for (final Element child : children) {
1109 if ("service".equals(child.getName())) {
1110 final String type = child.getAttribute("type");
1111 final String host = child.getAttribute("host");
1112 final String sport = child.getAttribute("port");
1113 final Integer port = sport == null ? null : Ints.tryParse(sport);
1114 final String transport = child.getAttribute("transport");
1115 final String username = child.getAttribute("username");
1116 final String password = child.getAttribute("password");
1117 if (Strings.isNullOrEmpty(host) || port == null) {
1118 continue;
1119 }
1120 if (port < 0 || port > 65535) {
1121 continue;
1122 }
1123 if (Arrays.asList("stun", "stuns", "turn", "turns").contains(type) && Arrays.asList("udp", "tcp").contains(transport)) {
1124 if (Arrays.asList("stuns", "turns").contains(type) && "udp".equals(transport)) {
1125 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": skipping invalid combination of udp/tls in external services");
1126 continue;
1127 }
1128 final PeerConnection.IceServer.Builder iceServerBuilder = PeerConnection.IceServer
1129 .builder(String.format("%s:%s:%s?transport=%s", type, IP.wrapIPv6(host), port, transport));
1130 iceServerBuilder.setTlsCertPolicy(PeerConnection.TlsCertPolicy.TLS_CERT_POLICY_INSECURE_NO_CHECK);
1131 if (username != null && password != null) {
1132 iceServerBuilder.setUsername(username);
1133 iceServerBuilder.setPassword(password);
1134 } else if (Arrays.asList("turn", "turns").contains(type)) {
1135 //The WebRTC spec requires throwing an InvalidAccessError when username (from libwebrtc source coder)
1136 //https://chromium.googlesource.com/external/webrtc/+/master/pc/ice_server_parsing.cc
1137 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": skipping " + type + "/" + transport + " without username and password");
1138 continue;
1139 }
1140 final PeerConnection.IceServer iceServer = iceServerBuilder.createIceServer();
1141 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": discovered ICE Server: " + iceServer);
1142 listBuilder.add(iceServer);
1143 }
1144 }
1145 }
1146 }
1147 List<PeerConnection.IceServer> iceServers = listBuilder.build();
1148 if (iceServers.size() == 0) {
1149 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": no ICE server found " + response);
1150 }
1151 onIceServersDiscovered.onIceServersDiscovered(iceServers);
1152 });
1153 } else {
1154 Log.w(Config.LOGTAG, id.account.getJid().asBareJid() + ": has no external service discovery");
1155 onIceServersDiscovered.onIceServersDiscovered(Collections.emptyList());
1156 }
1157 }
1158
1159 private void finish() {
1160 if (isTerminated()) {
1161 this.cancelRingingTimeout();
1162 this.webRTCWrapper.verifyClosed();
1163 this.jingleConnectionManager.finishConnection(this);
1164 } else {
1165 throw new IllegalStateException(String.format("Unable to call finish from %s", this.state));
1166 }
1167 }
1168
1169 private void writeLogMessage(final State state) {
1170 final long started = this.rtpConnectionStarted;
1171 long duration = started <= 0 ? 0 : SystemClock.elapsedRealtime() - started;
1172 if (state == State.TERMINATED_SUCCESS || (state == State.TERMINATED_CONNECTIVITY_ERROR && duration > 0)) {
1173 writeLogMessageSuccess(duration);
1174 } else {
1175 writeLogMessageMissed();
1176 }
1177 }
1178
1179 private void writeLogMessageSuccess(final long duration) {
1180 this.message.setBody(new RtpSessionStatus(true, duration).toString());
1181 this.writeMessage();
1182 }
1183
1184 private void writeLogMessageMissed() {
1185 this.message.setBody(new RtpSessionStatus(false, 0).toString());
1186 this.writeMessage();
1187 }
1188
1189 private void writeMessage() {
1190 final Conversational conversational = message.getConversation();
1191 if (conversational instanceof Conversation) {
1192 ((Conversation) conversational).add(this.message);
1193 xmppConnectionService.databaseBackend.createMessage(message);
1194 xmppConnectionService.updateConversationUi();
1195 } else {
1196 throw new IllegalStateException("Somehow the conversation in a message was a stub");
1197 }
1198 }
1199
1200 public State getState() {
1201 return this.state;
1202 }
1203
1204 boolean isTerminated() {
1205 return TERMINATED.contains(this.state);
1206 }
1207
1208 public Optional<VideoTrack> getLocalVideoTrack() {
1209 return webRTCWrapper.getLocalVideoTrack();
1210 }
1211
1212 public Optional<VideoTrack> getRemoteVideoTrack() {
1213 return webRTCWrapper.getRemoteVideoTrack();
1214 }
1215
1216
1217 public EglBase.Context getEglBaseContext() {
1218 return webRTCWrapper.getEglBaseContext();
1219 }
1220
1221 void setProposedMedia(final Set<Media> media) {
1222 this.proposedMedia = media;
1223 }
1224
1225 private interface OnIceServersDiscovered {
1226 void onIceServersDiscovered(List<PeerConnection.IceServer> iceServers);
1227 }
1228}