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assume credentials are the same for all contents when restarting ICE

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This commit is contained in:
Daniel Gultsch 2021-11-16 17:08:34 +01:00
parent abb671616c
commit 0a18c8613f
4 changed files with 28 additions and 17 deletions
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1
src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
View file

@ -1003,6 +1003,7 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
RendererCommon.ScalingType.SCALE_ASPECT_FILL,
RendererCommon.ScalingType.SCALE_ASPECT_FIT
);
//TODO this should probably only be 'connected'
if (STATES_CONSIDERED_CONNECTED.contains(state)) {
binding.appBarLayout.setVisibility(View.GONE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

21
src/main/java/eu/siacs/conversations/xmpp/jingle/JingleRtpConnection.java
View file

@ -141,7 +141,6 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
}
private final WebRTCWrapper webRTCWrapper = new WebRTCWrapper(this);
//TODO convert to Queue<Map.Entry<String, Description>>?
private final Queue<Map.Entry<String, RtpContentMap.DescriptionTransport>> pendingIceCandidates = new LinkedList<>();
private final OmemoVerification omemoVerification = new OmemoVerification();
private final Message message;
@ -295,9 +294,13 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
private boolean checkForIceRestart(final JinglePacket jinglePacket, final RtpContentMap rtpContentMap) {
final RtpContentMap existing = getRemoteContentMap();
final Map<String, IceUdpTransportInfo.Credentials> existingCredentials = existing.getCredentials();
final Map<String, IceUdpTransportInfo.Credentials> newCredentials = rtpContentMap.getCredentials();
if (!existingCredentials.keySet().equals(newCredentials.keySet())) {
final IceUdpTransportInfo.Credentials existingCredentials;
final IceUdpTransportInfo.Credentials newCredentials;
try {
existingCredentials = existing.getCredentials();
newCredentials = rtpContentMap.getCredentials();
} catch (final IllegalStateException e) {
Log.d(Config.LOGTAG, "unable to gather credentials for comparison", e);
return false;
}
if (existingCredentials.equals(newCredentials)) {
@ -307,11 +310,11 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
final RtpContentMap restartContentMap;
try {
if (isOffer) {
Log.d(Config.LOGTAG, "received offer to restart ICE " + newCredentials.values());
Log.d(Config.LOGTAG, "received offer to restart ICE " + newCredentials);
restartContentMap = existing.modifiedCredentials(newCredentials, IceUdpTransportInfo.Setup.ACTPASS);
} else {
final IceUdpTransportInfo.Setup setup = getPeerDtlsSetup();
Log.d(Config.LOGTAG, "received confirmation of ICE restart" + newCredentials.values() + " peer_setup=" + setup);
Log.d(Config.LOGTAG, "received confirmation of ICE restart" + newCredentials + " peer_setup=" + setup);
// DTLS setup attribute needs to be rewritten to reflect current peer state
// https://groups.google.com/g/discuss-webrtc/c/DfpIMwvUfeM
restartContentMap = existing.modifiedCredentials(newCredentials, setup);
@ -319,7 +322,7 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
if (applyIceRestart(jinglePacket, restartContentMap, isOffer)) {
return isOffer;
} else {
Log.d(Config.LOGTAG,"ignored ice restart. offer="+isOffer);
Log.d(Config.LOGTAG, "ignoring ICE restart. sending tie-break");
respondWithTieBreak(jinglePacket);
return true;
}
@ -1451,8 +1454,8 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
@Override
public void onIceCandidate(final IceCandidate iceCandidate) {
final RtpContentMap rtpContentMap = isInitiator() ? this.initiatorRtpContentMap : this.responderRtpContentMap;
final Collection<String> currentUfrags = Collections2.transform(rtpContentMap.getCredentials().values(), c -> c.ufrag);
final IceUdpTransportInfo.Candidate candidate = IceUdpTransportInfo.Candidate.fromSdpAttribute(iceCandidate.sdp, currentUfrags);
final String ufrag = rtpContentMap.getCredentials().ufrag;
final IceUdpTransportInfo.Candidate candidate = IceUdpTransportInfo.Candidate.fromSdpAttribute(iceCandidate.sdp, ufrag);
if (candidate == null) {
Log.d(Config.LOGTAG, "ignoring (not sending) candidate: " + iceCandidate.toString());
return;

15
src/main/java/eu/siacs/conversations/xmpp/jingle/RtpContentMap.java
View file

@ -146,8 +146,16 @@ public class RtpContentMap {
);
}
public Map<String, IceUdpTransportInfo.Credentials> getCredentials() {
return Maps.transformValues(contents, dt -> dt.transport.getCredentials());
public IceUdpTransportInfo.Credentials getCredentials() {
final Set<IceUdpTransportInfo.Credentials> allCredentials = ImmutableSet.copyOf(Collections2.transform(
contents.values(),
dt -> dt.transport.getCredentials()
));
final IceUdpTransportInfo.Credentials credentials = Iterables.getFirst(allCredentials, null);
if (allCredentials.size() == 1 && credentials != null) {
return credentials;
}
throw new IllegalStateException("Content map does not have distinct credentials");
}
public IceUdpTransportInfo.Setup getDtlsSetup() {
@ -170,12 +178,11 @@ public class RtpContentMap {
return count == 0;
}
public RtpContentMap modifiedCredentials(Map<String, IceUdpTransportInfo.Credentials> credentialsMap, final IceUdpTransportInfo.Setup setup) {
public RtpContentMap modifiedCredentials(IceUdpTransportInfo.Credentials credentials, final IceUdpTransportInfo.Setup setup) {
final ImmutableMap.Builder<String, DescriptionTransport> contentMapBuilder = new ImmutableMap.Builder<>();
for (final Map.Entry<String, DescriptionTransport> content : contents.entrySet()) {
final RtpDescription rtpDescription = content.getValue().description;
IceUdpTransportInfo transportInfo = content.getValue().transport;
final IceUdpTransportInfo.Credentials credentials = Objects.requireNonNull(credentialsMap.get(content.getKey()));
final IceUdpTransportInfo modifiedTransportInfo = transportInfo.modifyCredentials(credentials, setup);
contentMapBuilder.put(content.getKey(), new DescriptionTransport(rtpDescription, modifiedTransportInfo));
}

4
src/main/java/eu/siacs/conversations/xmpp/jingle/stanzas/IceUdpTransportInfo.java
View file

@ -146,7 +146,7 @@ public class IceUdpTransportInfo extends GenericTransportInfo {
}
// https://tools.ietf.org/html/draft-ietf-mmusic-ice-sip-sdp-39#section-5.1
public static Candidate fromSdpAttribute(final String attribute, Collection<String> currentUfrags) {
public static Candidate fromSdpAttribute(final String attribute, String currentUfrag) {
final String[] pair = attribute.split(":", 2);
if (pair.length == 2 && "candidate".equals(pair[0])) {
final String[] segments = pair[1].split(" ");
@ -163,7 +163,7 @@ public class IceUdpTransportInfo extends GenericTransportInfo {
additional.put(segments[i], segments[i + 1]);
}
final String ufrag = additional.get("ufrag");
if (ufrag != null && !currentUfrags.contains(ufrag)) {
if (ufrag != null && !ufrag.equals(currentUfrag)) {
return null;
}
final Candidate candidate = new Candidate();