diff --git a/meet/server/lib/Peer.js b/meet/server/lib/Peer.js
index f3e595fa..aa498767 100644
--- a/meet/server/lib/Peer.js
+++ b/meet/server/lib/Peer.js
@@ -1,232 +1,237 @@
 const EventEmitter = require('events').EventEmitter;
 const Logger = require('./Logger');
 const Roles = require('./userRoles');
 
 const logger = new Logger('Peer');
 
 class Peer extends EventEmitter {
     constructor({ id, roomId }) {
         logger.info('constructor() [id:"%s"]', id);
         super();
 
         this._id = id;
 
         this._roomId = roomId;
 
         this._socket = null;
 
         this._closed = false;
 
         this._role = 0;
 
         this._nickname = false;
 
+        this._language = null;
+
         this._routerId = null;
 
         this._rtpCapabilities = null;
 
         this._raisedHand = false;
 
         this._transports = new Map();
 
         this._producers = new Map();
 
         this._consumers = new Map();
     }
 
     close() {
         logger.info('close()');
 
         this._closed = true;
 
         // Iterate and close all mediasoup Transport associated to this Peer, so all
         // its Producers and Consumers will also be closed.
         for (const transport of this.transports.values()) {
             transport.close();
         }
 
         if (this.socket)
             this.socket.disconnect(true);
 
         this.emit('close');
     }
 
     get id() {
         return this._id;
     }
 
     set id(id) {
         this._id = id;
     }
 
     get roomId() {
         return this._roomId;
     }
 
     set roomId(roomId) {
         this._roomId = roomId;
     }
 
     get socket() {
         return this._socket;
     }
 
     set socket(socket) {
         this._socket = socket;
 
         if (this.socket) {
             this.socket.on('disconnect', () => {
                 if (this.closed)
                     return;
 
                 logger.debug('"disconnect" event [id:%s]', this.id);
 
                 this.close();
             });
         }
     }
 
     get closed() {
         return this._closed;
     }
 
     get role() {
         return this._role;
     }
 
     get nickname() {
         return this._nickname;
     }
 
+    get language() {
+        return this._language;
+    }
+
     set nickname(nickname) {
         if (nickname !== this._nickname) {
             this._nickname = nickname;
 
             this.emit('nicknameChanged', {});
         }
     }
 
+    set language(language) {
+        if (language != this._language) {
+            this._language = language;
+
+            this.emit('languageChanged', {});
+        }
+    }
+
     get routerId() {
         return this._routerId;
     }
 
     set routerId(routerId) {
         this._routerId = routerId;
     }
 
     get rtpCapabilities() {
         return this._rtpCapabilities;
     }
 
     set rtpCapabilities(rtpCapabilities) {
         this._rtpCapabilities = rtpCapabilities;
     }
 
     get raisedHand() {
         return this._raisedHand;
     }
 
     set raisedHand(raisedHand) {
         this._raisedHand = raisedHand;
     }
 
     get transports() {
         return this._transports;
     }
 
     get producers() {
         return this._producers;
     }
 
     get consumers() {
         return this._consumers;
     }
 
     setRole(newRole) {
         if (this._role != newRole) {
-            // It is either screen sharing or publisher/subscriber
-            if (newRole & Roles.SCREEN) {
-                if (newRole & Roles.PUBLISHER) {
-                    newRole ^= Roles.PUBLISHER;
-                }
-                if (newRole & Roles.SUBSCRIBER) {
-                    newRole ^= Roles.SUBSCRIBER;
-                }
-            }
-
             this._role = newRole;
 
-            this.emit('gotRole', { newRole });
+            this.emit('roleChanged', {});
         }
     }
 
     isValidRole(newRole) {
         Object.keys(Roles).forEach(roleId => {
             const role = Roles[roleId]
             if (newRole & role) {
                 newRole = newRole ^ role;
             }
         })
 
         return newRole == 0;
     }
 
     hasRole(role) {
         return !!(this._role & role);
     }
 
     addTransport(id, transport) {
         this.transports.set(id, transport);
     }
 
     getTransport(id) {
         return this.transports.get(id);
     }
 
     getConsumerTransport() {
         return Array.from(this.transports.values())
             .find((t) => t.appData.consuming);
     }
 
     removeTransport(id) {
         this.transports.delete(id);
     }
 
     addProducer(id, producer) {
         this.producers.set(id, producer);
     }
 
     getProducer(id) {
         return this.producers.get(id);
     }
 
     removeProducer(id) {
         this.producers.delete(id);
     }
 
     addConsumer(id, consumer) {
         this.consumers.set(id, consumer);
     }
 
     getConsumer(id) {
         return this.consumers.get(id);
     }
 
     removeConsumer(id) {
         this.consumers.delete(id);
     }
 
     get peerInfo() {
         const peerInfo =
         {
             id: this.id,
+            language: this.language,
             nickname: this.nickname,
             role: this.role,
             raisedHand: this.raisedHand
         };
 
         return peerInfo;
     }
 }
 
 module.exports = Peer;
diff --git a/meet/server/lib/Room.js b/meet/server/lib/Room.js
index d6a66946..7368b030 100644
--- a/meet/server/lib/Room.js
+++ b/meet/server/lib/Room.js
@@ -1,1157 +1,1179 @@
 const EventEmitter = require('events').EventEmitter;
 const AwaitQueue = require('awaitqueue');
 const crypto = require('crypto');
 const Logger = require('./Logger');
 const { SocketTimeoutError } = require('./errors');
 const Roles = require('./userRoles');
 
 const config = require('../config/config');
 
 const logger = new Logger('Room');
 
 const ROUTER_SCALE_SIZE = config.routerScaleSize || 40;
 
 class Room extends EventEmitter {
 
     static calculateLoads(mediasoupWorkers, peers, mediasoupRouters) {
         const routerLoads = new Map();
         const workerLoads = new Map();
         const pipedRoutersIds = new Set();
 
         // Calculate router loads by adding up peers per router, and collected piped routers
         for (const peer of peers) {
             const routerId = peer.routerId;
 
             if (routerId) {
                 if (mediasoupRouters.has(routerId)) {
                     pipedRoutersIds.add(routerId);
                 }
 
                 if (routerLoads.has(routerId)) {
                     routerLoads.set(routerId, routerLoads.get(routerId) + 1);
                 } else {
                     routerLoads.set(routerId, 1);
                 }
             }
         }
 
         // Calculate worker loads by adding up router loads per worker
         for (const worker of mediasoupWorkers) {
             for (const router of worker._routers) {
                 const routerId = router._internal.routerId;
 
                 if (workerLoads.has(worker._pid)) {
                     workerLoads.set(worker._pid, workerLoads.get(worker._pid) +
                         (routerLoads.has(routerId)?routerLoads.get(routerId):0));
                 } else {
                     workerLoads.set(worker._pid,
                         (routerLoads.has(routerId)?routerLoads.get(routerId):0));
                 }
             }
         }
         return {routerLoads, workerLoads, pipedRoutersIds};
     }
 
     /*
      * Find a router that is on a worker that is least loaded.
      *
      * A worker with a router that we are already piping to is preferred.
      */
     static getLeastLoadedRouter(mediasoupWorkers, peers, mediasoupRouters) {
         const {workerLoads, pipedRoutersIds} = Room.calculateLoads(mediasoupWorkers, peers.values(), mediasoupRouters);
 
         const sortedWorkerLoads = new Map([ ...workerLoads.entries() ].sort(
             (a, b) => a[1] - b[1]));
 
         // we don't care about if router is piped, just choose the least loaded worker
         if (pipedRoutersIds.size === 0 ||
             pipedRoutersIds.size === mediasoupRouters.size) {
             const workerId = sortedWorkerLoads.keys().next().value;
 
             for (const worker of mediasoupWorkers) {
                 if (worker._pid === workerId) {
                     for (const router of worker._routers) {
                         const routerId = router._internal.routerId;
 
                         if (mediasoupRouters.has(routerId)) {
                             return routerId;
                         }
                     }
                 }
             }
         } else {
             // find if there is a piped router that is on a worker that is below limit
             for (const [ workerId, workerLoad ] of sortedWorkerLoads.entries()) {
                 for (const worker of mediasoupWorkers) {
                     if (worker._pid === workerId) {
                         for (const router of worker._routers) {
                             const routerId = router._internal.routerId;
 
                             // on purpose we check if the worker load is below the limit,
                             // as in reality the worker load is imortant,
                             // not the router load
                             if (mediasoupRouters.has(routerId) &&
                                 pipedRoutersIds.has(routerId) &&
                                 workerLoad < ROUTER_SCALE_SIZE) {
                                 return routerId;
                             }
                         }
                     }
                 }
             }
 
             // no piped router found, we need to return router from least loaded worker
             const workerId = sortedWorkerLoads.keys().next().value;
 
             for (const worker of mediasoupWorkers) {
                 if (worker._pid === workerId) {
                     for (const router of worker._routers) {
                         const routerId = router._internal.routerId;
 
                         if (mediasoupRouters.has(routerId)) {
                             return routerId;
                         }
                     }
                 }
             }
         }
     }
 
     /**
      * Factory function that creates and returns Room instance.
      *
      * @async
      *
      * @param {mediasoup.Worker} mediasoupWorkers - The mediasoup Worker in which a new
      *   mediasoup Router must be created.
      * @param {String} roomId - Id of the Room instance.
      */
     static async create({ mediasoupWorkers, roomId, peers }) {
         logger.info('create() [roomId:"%s"]', roomId);
 
         // Router media codecs.
         const mediaCodecs = config.mediasoup.router.mediaCodecs;
 
         const mediasoupRouters = new Map();
 
         for (const worker of mediasoupWorkers) {
             const router = await worker.createRouter({ mediaCodecs });
 
             mediasoupRouters.set(router.id, router);
         }
 
         const firstRouter = mediasoupRouters.get(Room.getLeastLoadedRouter(
             mediasoupWorkers, peers, mediasoupRouters));
 
         // Create a mediasoup AudioLevelObserver on first router
         const audioLevelObserver = await firstRouter.createAudioLevelObserver(
             {
                 maxEntries : 1,
                 threshold  : -80,
                 interval   : 800
             });
 
         return new Room({
             roomId,
             mediasoupRouters,
             audioLevelObserver,
             mediasoupWorkers,
             peers
         });
     }
 
     constructor({
         roomId,
         mediasoupRouters,
         audioLevelObserver,
         mediasoupWorkers,
         peers
     }) {
         logger.info('constructor() [roomId:"%s"]', roomId);
 
         super();
         this.setMaxListeners(Infinity);
 
         // this._uuid = uuidv4();
 
         this._mediasoupWorkers = mediasoupWorkers;
 
         // Room ID.
         this._roomId = roomId;
 
         // Closed flag.
         this._closed = false;
 
         // Joining queue
         this._queue = new AwaitQueue();
 
         this._peers = peers;
 
         this._selfDestructTimeout = null;
 
         // Array of mediasoup Router instances.
         this._mediasoupRouters = mediasoupRouters;
 
         this._audioLevelObserver = audioLevelObserver;
     }
 
 
     dumpStats() {
         const peers = this.getPeers();
         const {routerLoads, workerLoads, pipedRoutersIds} = Room.calculateLoads(this._mediasoupWorkers, peers, this._mediasoupRouters);
         let stats = {
             numberOfWorkers: this._mediasoupWorkers.length,
             numberOfRouters: this._mediasoupRouters.size,
             numberOfPeers: peers.length,
             routerLoads: routerLoads,
             workerLoads: workerLoads,
             pipedRoutersIds: pipedRoutersIds,
         };
         console.log(stats);
     }
 
 
     close() {
         logger.debug('close()');
 
         this._closed = true;
 
         this._queue.close();
 
         this._queue = null;
 
         if (this._selfDestructTimeout)
             clearTimeout(this._selfDestructTimeout);
 
         this._selfDestructTimeout = null;
 
         // Close the peers.
         for (const peer of this._peers.values()) {
             if (!peer.closed)
                 peer.close();
         }
 
         this._peers = {};
 
         // Close the mediasoup Routers.
         for (const router of this._mediasoupRouters.values()) {
             router.close();
         }
 
         this._mediasoupWorkers = null;
 
         this._mediasoupRouters.clear();
 
         this._audioLevelObserver = null;
 
         // Emit 'close' event.
         this.emit('close');
     }
 
     handlePeer({ peer }) {
         logger.info('handlePeer() [peer:"%s", role:%s]', peer.id, peer.role);
 
         // Should not happen
         if (this._peers[peer.id]) {
             logger.warn(
                 'handleConnection() | there is already a peer with same peerId [peer:"%s"]',
                 peer.id);
         }
 
         this._peerJoining(peer);
     }
 
     logStatus() {
         logger.info(
             'logStatus() [room id:"%s", peers:"%s"]',
             this._roomId,
             Object.keys(this._peers).length
         );
     }
 
     dump() {
         return {
             roomId : this._roomId,
             peers  : Object.keys(this._peers).length
         };
     }
 
     get id() {
         return this._roomId;
     }
 
     selfDestructCountdown() {
         logger.debug('selfDestructCountdown() started');
 
         clearTimeout(this._selfDestructTimeout);
 
         this._selfDestructTimeout = setTimeout(() => {
             if (this._closed)
                 return;
 
             if (this.checkEmpty()) {
                 logger.info(
                     'Room deserted for some time, closing the room [roomId:"%s"]',
                     this._roomId);
                 this.close();
             } else
                 logger.debug('selfDestructCountdown() aborted; room is not empty!');
         }, 10000);
     }
 
     checkEmpty() {
         return Object.keys(this._peers).length === 0;
     }
 
     _getTURNCredentials(name, secret) {
         const unixTimeStamp = parseInt(Date.now()/1000) + 24*3600; // this credential would be valid for the next 24 hours
         // If there is no name, the timestamp alone can also be used.
         const username = name ? `${unixTimeStamp}:${name}` : `${unixTimeStamp}`;
         const hmac = crypto.createHmac('sha1', secret);
         hmac.setEncoding('base64');
         hmac.write(username);
         hmac.end();
         const password = hmac.read();
         return {
             username,
             password
         };
     }
 
     _peerJoining(peer) {
         this._queue.push(async () => {
             peer.socket.join(this._roomId);
 
             this._peers[peer.id] = peer;
 
             // Assign routerId
             peer.routerId = await this._getRouterId();
 
             this._handlePeer(peer);
 
             let iceServers = []
             if ('turn' in config) {
                 // Generate time-limited credentials. The name is only relevant for the logs.
                 const {username, password} = this._getTURNCredentials(peer.id, config.turn.staticSecret);
 
                 iceServers = [ {
                     urls       : config.turn.urls,
                     username   : username,
                     credential : password
                 } ];
             }
 
             this._notification(peer.socket, 'roomReady', { iceServers });
         })
             .catch((error) => {
                 logger.error('_peerJoining() [error:"%o"]', error);
             });
     }
 
     _handlePeer(peer) {
         logger.debug('_handlePeer() [peer:"%s"]', peer.id);
 
         peer.on('close', () => {
             this._handlePeerClose(peer);
         });
 
         peer.on('nicknameChanged', () => {
             // Spread to others
-            this._notification(peer.socket, 'changeNickname', {
-                peerId: peer.id,
-                nickname: peer.nickname
-            }, true);
+            const data = { peerId: peer.id, nickname: peer.nickname };
+            this._notification(peer.socket, 'changeNickname', data, true);
         });
 
-        peer.on('gotRole', ({ newRole }) => {
-            // Spread to others
-            this._notification(peer.socket, 'changeRole', {
-                peerId: peer.id,
-                role: newRole
-            }, true, true);
+        peer.on('languageChanged', () => {
+            // Spread to others (and self)
+            const data = { peerId: peer.id, language: peer.language };
+            this._notification(peer.socket, 'changeLanguage', data, true, true);
+        });
+
+        peer.on('roleChanged', () => {
+            // Spread to others (and self)
+            const data = { peerId: peer.id, role: peer.role };
+            this._notification(peer.socket, 'changeRole', data, true, true);
         });
 
         peer.socket.on('request', (request, cb) => {
             logger.debug(
                 'Peer "request" event [method:"%s", peerId:"%s"]',
                 request.method, peer.id);
 
             this._handleSocketRequest(peer, request, cb)
                 .catch((error) => {
                     logger.error('"request" failed [error:"%o"]', error);
 
                     cb(error);
                 });
         });
 
         // Peer left before we were done joining
         if (peer.closed)
             this._handlePeerClose(peer);
     }
 
     _handlePeerClose(peer) {
         logger.debug('_handlePeerClose() [peer:"%s"]', peer.id);
 
         if (this._closed)
             return;
 
         this._notification(peer.socket, 'peerClosed', { peerId: peer.id }, true);
 
         delete this._peers[peer.id];
 
         // If this is the last Peer in the room close the room after a while.
         if (this.checkEmpty())
             this.selfDestructCountdown();
     }
 
     async _handleSocketRequest(peer, request, cb) {
         const router = this._mediasoupRouters.get(peer.routerId);
 
         switch (request.method) {
         case 'getRouterRtpCapabilities':
         {
             cb(null, router.rtpCapabilities);
             break;
         }
 
         case 'dumpStats':
         {
             this.dumpStats()
 
             cb(null);
             break;
         }
 
         case 'join':
         {
             const {
                 nickname,
                 rtpCapabilities
             } = request.data;
 
             // Store client data into the Peer data object.
             peer.nickname = nickname;
             peer.rtpCapabilities = rtpCapabilities;
 
             // Tell the new Peer about already joined Peers.
             const otherPeers = this.getPeers(peer);
 
             const peerInfos = otherPeers.map(otherPeer => otherPeer.peerInfo);
 
             cb(null, {
                 id: peer.id,
                 role: peer.role,
                 peers: peerInfos,
             });
 
             // Create Consumers for existing Producers.
             for (const otherPeer of otherPeers) {
                 for (const producer of otherPeer.producers.values()) {
                     this._createConsumer({
                         consumerPeer: peer,
                         producerPeer: otherPeer,
                         producer
                     });
                 }
             }
 
             // Notify the new Peer to all other Peers.
             this._notification(peer.socket, 'newPeer', peer.peerInfo, true);
 
             logger.debug(
                 'peer joined [peer: "%s", nickname: "%s"]',
                 peer.id, nickname);
 
             break;
         }
+/*
         case 'createPlainTransport':
         {
             const { producing, consuming } = request.data;
 
             const transport = await router.createPlainTransport(
                 {
                     //When consuming we manually connect using connectPlainTransport,
                     //otherwise we let the port autodetection work.
                     comedia: producing,
                     // FFmpeg and GStreamer don't support RTP/RTCP multiplexing ("a=rtcp-mux" in SDP)
                     rtcpMux: false,
                     listenIp: { ip: "127.0.0.1", announcedIp: null },
                     appData : { producing, consuming }
                 }
             );
                 // await transport.enableTraceEvent([ "probation", "bwe" ]);
                 // transport.on("trace", (trace) => {
                 //     console.log(trace);
                 // });
 
             peer.addTransport(transport.id, transport);
 
             cb(
                 null,
                 {
                     id       : transport.id,
                     ip       : transport.tuple.localIp,
                     port     : transport.tuple.localPort,
                     rtcpPort : transport.rtcpTuple ? transport.rtcpTuple.localPort : undefined
                 });
 
             break;
         }
 
         case 'connectPlainTransport':
         {
             const { transportId, ip, port, rtcpPort } = request.data;
             const transport = peer.getTransport(transportId);
 
             if (!transport)
                 throw new Error(`transport with id "${transportId}" not found`);
 
             await transport.connect({
                 ip: ip,
                 port: port,
                 rtcpPort: rtcpPort,
             });
 
             cb();
 
             break;
         }
-
+*/
         case 'createWebRtcTransport':
         {
             // NOTE: Don't require that the Peer is joined here, so the client can
             // initiate mediasoup Transports and be ready when he later joins.
 
             const { forceTcp, producing, consuming } = request.data;
 
             const webRtcTransportOptions =
                 {
                     ...config.mediasoup.webRtcTransport,
                     appData : { producing, consuming }
                 };
 
             webRtcTransportOptions.enableTcp = true;
 
             if (forceTcp)
                 webRtcTransportOptions.enableUdp = false;
             else {
                 webRtcTransportOptions.enableUdp = true;
                 webRtcTransportOptions.preferUdp = true;
             }
 
             const transport = await router.createWebRtcTransport(
                 webRtcTransportOptions
             );
 
             transport.on('dtlsstatechange', (dtlsState) => {
                 if (dtlsState === 'failed' || dtlsState === 'closed') {
                     logger.warn('WebRtcTransport "dtlsstatechange" event [dtlsState:%s]', dtlsState);
                 }
             });
 
             // Store the WebRtcTransport into the Peer data Object.
             peer.addTransport(transport.id, transport);
 
             cb(
                 null,
                 {
                     id             : transport.id,
                     iceParameters  : transport.iceParameters,
                     iceCandidates  : transport.iceCandidates,
                     dtlsParameters : transport.dtlsParameters
                 });
 
             const { maxIncomingBitrate } = config.mediasoup.webRtcTransport;
 
             // If set, apply max incoming bitrate limit.
             if (maxIncomingBitrate) {
                 try {
                     await transport.setMaxIncomingBitrate(maxIncomingBitrate); 
                 } catch (error) {
                     logger.info("Setting the incoming bitrate failed")
                 }
             }
 
             break;
         }
 
         case 'connectWebRtcTransport':
         {
             const { transportId, dtlsParameters } = request.data;
             const transport = peer.getTransport(transportId);
 
             if (!transport)
                 throw new Error(`transport with id "${transportId}" not found`);
 
             await transport.connect({ dtlsParameters });
 
             cb();
 
             break;
         }
         /*
             case 'restartIce':
             {
                 const { transportId } = request.data;
                 const transport = peer.getTransport(transportId);
 
                 if (!transport)
                     throw new Error(`transport with id "${transportId}" not found`);
 
                 const iceParameters = await transport.restartIce();
 
                 cb(null, iceParameters);
 
                 break;
             }
 */
         case 'produce':
         {
             let { appData } = request.data;
 
             if (!appData.source || ![ 'mic', 'webcam', 'screen' ].includes(appData.source))
                 throw new Error('invalid producer source');
 
             if (appData.source === 'mic' && !peer.hasRole(Roles.PUBLISHER))
                 throw new Error('peer not authorized');
 
             if (appData.source === 'webcam' && !peer.hasRole(Roles.PUBLISHER))
                 throw new Error('peer not authorized');
 
             if (appData.source === 'screen' && !peer.hasRole(Roles.PUBLISHER))
                 throw new Error('peer not authorized');
 
             const { transportId, kind, rtpParameters } = request.data;
             const transport = peer.getTransport(transportId);
 
             if (!transport)
                 throw new Error(`transport with id "${transportId}" not found`);
 
             // Add peerId into appData to later get the associated Peer during
             // the 'loudest' event of the audioLevelObserver.
             appData = { ...appData, peerId: peer.id };
 
             const producer =
                     await transport.produce({ kind, rtpParameters, appData });
 
             const pipeRouters = this._getRoutersToPipeTo(peer.routerId);
 
             for (const [ routerId, destinationRouter ] of this._mediasoupRouters) {
                 if (pipeRouters.includes(routerId)) {
                     await router.pipeToRouter({
                         producerId : producer.id,
                         router     : destinationRouter
                     });
                 }
             }
 
             // Store the Producer into the Peer data Object.
             peer.addProducer(producer.id, producer);
 
             producer.on('videoorientationchange', (videoOrientation) => {
                 logger.debug(
                     'producer "videoorientationchange" event [producerId:"%s", videoOrientation:"%o"]',
                     producer.id, videoOrientation);
             });
 
             // Trace individual packets for debugging
             // await producer.enableTraceEvent([ "rtp", "pli", "keyframe", "nack" ]);
             // producer.on("trace", (trace) => {
             //     console.log(`Trace on ${producer.id}`, trace);
             // });
 
             cb(null, { id: producer.id });
 
             // Optimization: Create a server-side Consumer for each Peer.
             for (const otherPeer of this.getPeers(peer)) {
-                this._createConsumer(
-                    {
-                        consumerPeer : otherPeer,
-                        producerPeer : peer,
+                this._createConsumer({
+                        consumerPeer: otherPeer,
+                        producerPeer: peer,
                         producer
-                    });
+                });
             }
 
             // Add into the audioLevelObserver.
             if (kind === 'audio') {
                 this._audioLevelObserver.addProducer({ producerId: producer.id })
                     .catch(() => {});
             }
 
             break;
         }
 
         case 'closeProducer':
         {
             const { producerId } = request.data;
             const producer = peer.getProducer(producerId);
 
             if (!producer)
                 throw new Error(`producer with id "${producerId}" not found`);
 
             producer.close();
 
             // Remove from its map.
             peer.removeProducer(producer.id);
 
             cb();
 
             break;
         }
 
         case 'pauseProducer':
         {
             const { producerId } = request.data;
             const producer = peer.getProducer(producerId);
 
             if (!producer)
                 throw new Error(`producer with id "${producerId}" not found`);
 
             await producer.pause();
 
             cb();
 
             break;
         }
 
         case 'resumeProducer':
         {
             const { producerId } = request.data;
             const producer = peer.getProducer(producerId);
 
             if (!producer)
                 throw new Error(`producer with id "${producerId}" not found`);
 
             await producer.resume();
 
             cb();
 
             break;
         }
 
         case 'pauseConsumer':
         {
             const { consumerId } = request.data;
             const consumer = peer.getConsumer(consumerId);
 
             if (!consumer)
                 throw new Error(`consumer with id "${consumerId}" not found`);
 
             await consumer.pause();
 
             cb();
 
             break;
         }
 
         case 'resumeConsumer':
         {
             const { consumerId } = request.data;
             const consumer = peer.getConsumer(consumerId);
 
             if (!consumer)
                 throw new Error(`consumer with id "${consumerId}" not found`);
 
             await consumer.resume();
 
             cb();
 
             break;
         }
 
         case 'changeNickname':
         {
             const { nickname } = request.data;
 
             peer.nickname = nickname;
 
             // This will be spread through events from the peer object
 
             // Return no error
             cb();
 
             break;
         }
 
         case 'chatMessage':
         {
             const { message } = request.data;
 
             // Spread to others
             this._notification(peer.socket, 'chatMessage', {
                 peerId: peer.id,
                 nickname: peer.nickname,
                 message: message
             }, true, true);
 
             // Return no error
             cb();
 
             break;
         }
 
         case 'moderator:addRole':
         {
             if (!peer.hasRole(Roles.MODERATOR))
                 throw new Error('peer not authorized');
 
             const { peerId, role } = request.data;
 
             const rolePeer = this._peers[peerId];
 
             if (!rolePeer)
                 throw new Error(`peer with id "${peerId}" not found`);
 
             if (!rolePeer.isValidRole(role))
                 throw new Error('invalid role');
 
             if (!rolePeer.hasRole(role)) {
                 // This will propagate the event automatically
                 rolePeer.setRole(rolePeer.role | role);
             }
 
             // Return no error
             cb();
 
             break;
         }
 
         case 'moderator:removeRole':
         {
             if (!peer.hasRole(Roles.MODERATOR))
                 throw new Error('peer not authorized');
 
             const { peerId, role } = request.data;
 
             const rolePeer = this._peers[peerId];
 
             if (!rolePeer)
                 throw new Error(`peer with id "${peerId}" not found`);
 
             if (!rolePeer.isValidRole(role))
                 throw new Error('invalid role');
 
             if (rolePeer.hasRole(role)) {
                 // This will propagate the event automatically
                 rolePeer.setRole(rolePeer.role ^ role);
             }
 
             // Return no error
             cb();
 
             break;
         }
 
+        case 'moderator:changeLanguage':
+        {
+            if (!peer.hasRole(Roles.MODERATOR))
+                throw new Error('peer not authorized');
+
+            const { language } = request.data;
+
+            if (language && !/^[a-z]{2}$/.test(language))
+                throw new Error('invalid language code');
+
+            peer.language = language;
+
+            // This will be spread through events from the peer object
+
+            // Return no error
+            cb();
+
+            break;
+        }
+
         case 'moderator:closeRoom':
         {
             if (!peer.hasRole(Roles.OWNER))
                 throw new Error('peer not authorized');
 
             this._notification(peer.socket, 'moderator:closeRoom', null, true);
 
             cb();
 
             // Close the room
             this.close();
 
             // TODO: remove the room?
 
             break;
         }
 
         case 'moderator:kickPeer':
         {
             if (!peer.hasRole(Roles.MODERATOR))
                 throw new Error('peer not authorized');
 
             const { peerId } = request.data;
 
             const kickPeer = this._peers[peerId];
 
             if (!kickPeer)
                 throw new Error(`peer with id "${peerId}" not found`);
 
             this._notification(kickPeer.socket, 'moderator:kickPeer');
 
             kickPeer.close();
 
             cb();
 
             break;
         }
 
         case 'raisedHand':
         {
             const { raisedHand } = request.data;
 
             peer.raisedHand = raisedHand;
 
             // Spread to others
             this._notification(peer.socket, 'raisedHand', {
                 peerId: peer.id,
                 raisedHand: raisedHand,
             }, true);
 
             // Return no error
             cb();
 
             break;
         }
 
         default:
         {
             logger.error('unknown request.method "%s"', request.method);
 
             cb(500, `unknown request.method "${request.method}"`);
         }
         }
     }
 
     /**
      * Creates a mediasoup Consumer for the given mediasoup Producer.
      *
      * @async
      */
     async _createConsumer({ consumerPeer, producerPeer, producer }) {
         logger.debug(
             '_createConsumer() [consumerPeer:"%s", producerPeer:"%s", producer:"%s"]',
             consumerPeer.id,
             producerPeer.id,
             producer.id
         );
 
         const router = this._mediasoupRouters.get(producerPeer.routerId);
 
         // Optimization:
         // - Create the server-side Consumer. If video, do it paused.
         // - Tell its Peer about it and wait for its response.
         // - Upon receipt of the response, resume the server-side Consumer.
         // - If video, this will mean a single key frame requested by the
         //   server-side Consumer (when resuming it).
 
         // NOTE: Don't create the Consumer if the remote Peer cannot consume it.
         if (
             !consumerPeer.rtpCapabilities ||
             !router.canConsume(
                 {
                     producerId      : producer.id,
                     rtpCapabilities : consumerPeer.rtpCapabilities
                 })
         ) {
             return;
         }
 
         // Must take the Transport the remote Peer is using for consuming.
         const transport = consumerPeer.getConsumerTransport();
 
         // This should not happen.
         if (!transport) {
             logger.warn('_createConsumer() | Transport for consuming not found');
 
             return;
         }
 
         // Create the Consumer in paused mode.
         let consumer;
 
         try {
             consumer = await transport.consume(
                 {
                     producerId      : producer.id,
                     rtpCapabilities : consumerPeer.rtpCapabilities,
                     paused          : producer.kind === 'video'
                 });
 
             if (producer.kind === 'audio')
                 await consumer.setPriority(255);
         } catch (error) {
             logger.warn('_createConsumer() | [error:"%o"]', error);
 
             return;
         }
 
         // Trace individual packets for debugging
         // await consumer.enableTraceEvent([ "rtp", "pli", "fir" ]);
         // consumer.on("trace", (trace) => {
         //     console.log(`Trace on ${consumer.id}`, trace);
         // });
 
         // Store the Consumer into the consumerPeer data Object.
         consumerPeer.addConsumer(consumer.id, consumer);
 
         // Set Consumer events.
         consumer.on('transportclose', () => {
             // Remove from its map.
             consumerPeer.removeConsumer(consumer.id);
         });
 
         consumer.on('producerclose', () => {
             // Remove from its map.
             consumerPeer.removeConsumer(consumer.id);
 
             this._notification(consumerPeer.socket, 'consumerClosed', { consumerId: consumer.id });
         });
 
         consumer.on('producerpause', () => {
             this._notification(consumerPeer.socket, 'consumerPaused', { consumerId: consumer.id });
         });
 
         consumer.on('producerresume', () => {
             this._notification(consumerPeer.socket, 'consumerResumed', { consumerId: consumer.id });
         });
 
         // Send a request to the remote Peer with Consumer parameters.
         try {
             await this._request(
                 consumerPeer.socket,
                 'newConsumer',
                 {
                     peerId         : producerPeer.id,
                     kind           : consumer.kind,
                     producerId     : producer.id,
                     id             : consumer.id,
                     rtpParameters  : consumer.rtpParameters,
                     type           : consumer.type,
                     appData        : producer.appData,
                     producerPaused : consumer.producerPaused
                 }
             );
 
             // Now that we got the positive response from the remote Peer and, if
             // video, resume the Consumer to ask for an efficient key frame.
             await consumer.resume();
         } catch (error) {
             logger.warn('_createConsumer() | [error:"%o"]', error);
         }
     }
 
     /**
      * Get the list of peers.
      */
     getPeers(excludePeer = undefined) {
         return Object.values(this._peers)
             .filter((peer) => peer !== excludePeer);
     }
 
     _timeoutCallback(callback) {
         let called = false;
 
         const interval = setTimeout(
             () => {
                 if (called)
                     return;
                 called = true;
                 callback(new SocketTimeoutError('Request timed out'));
             },
             config.requestTimeout || 20000
         );
 
         return (...args) => {
             if (called)
                 return;
             called = true;
             clearTimeout(interval);
 
             callback(...args);
         };
     }
 
     _sendRequest(socket, method, data = {}) {
         return new Promise((resolve, reject) => {
             socket.emit(
                 'request',
                 { method, data },
                 this._timeoutCallback((err, response) => {
                     if (err) {
                         reject(err);
                     } else {
                         resolve(response);
                     }
                 })
             );
         });
     }
 
     async _request(socket, method, data) {
         logger.debug('_request() [method:"%s", data:"%o"]', method, data);
 
         const {
             requestRetries = 3
         } = config;
 
         for (let tries = 0; tries < requestRetries; tries++) {
             try {
                 return await this._sendRequest(socket, method, data);
             } catch (error) {
                 if (
                     error instanceof SocketTimeoutError &&
                     tries < requestRetries
                 )
                     logger.warn('_request() | timeout, retrying [attempt:"%s"]', tries);
                 else
                     throw error;
             }
         }
     }
 
     _notification(socket, method, data = {}, broadcast = false, includeSender = false) {
         if (broadcast) {
             socket.broadcast.to(this._roomId).emit(
                 'notification', { method, data }
             );
 
             if (includeSender)
                 socket.emit('notification', { method, data });
         } else {
             socket.emit('notification', { method, data });
         }
     }
 
     /*
      * Pipe producers of peers that are running under another router to this router.
      */
     async _pipeProducersToRouter(routerId) {
         const router = this._mediasoupRouters.get(routerId);
 
         // All peers that have a different router
         const peersToPipe =
             Object.values(this._peers)
                 .filter((peer) => peer.routerId !== routerId && peer.routerId !== null);
 
         for (const peer of peersToPipe) {
             const srcRouter = this._mediasoupRouters.get(peer.routerId);
 
             for (const producerId of peer.producers.keys()) {
                 if (router._producers.has(producerId)) {
                     continue;
                 }
 
                 await srcRouter.pipeToRouter({
                     producerId : producerId,
                     router     : router
                 });
             }
         }
     }
 
     async _getRouterId() {
         const routerId = Room.getLeastLoadedRouter(
             this._mediasoupWorkers, this._peers, this._mediasoupRouters);
 
         await this._pipeProducersToRouter(routerId);
 
         return routerId;
     }
 
     // Returns an array of router ids we need to pipe to:
     // The combined set of routers of all peers, exluding the router of the peer itself.
     _getRoutersToPipeTo(originRouterId) {
         return Object.values(this._peers)
             .map((peer) => peer.routerId)
             .filter((routerId, index, self) =>
                 routerId !== originRouterId && self.indexOf(routerId) === index
             );
     }
 }
 
 module.exports = Room;
diff --git a/src/app/Http/Controllers/API/V4/OpenViduController.php b/src/app/Http/Controllers/API/V4/OpenViduController.php
index 5a6e7df7..317c0d2c 100644
--- a/src/app/Http/Controllers/API/V4/OpenViduController.php
+++ b/src/app/Http/Controllers/API/V4/OpenViduController.php
@@ -1,518 +1,499 @@
 <?php
 
 namespace App\Http\Controllers\API\V4;
 
 use App\Http\Controllers\Controller;
 use App\OpenVidu\Connection;
 use App\OpenVidu\Room;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Validator;
 
 class OpenViduController extends Controller
 {
     public const AUTH_HEADER = 'X-Meet-Auth-Token';
 
     /**
      * Accept the room join request.
      *
      * @param string $id    Room identifier (name)
      * @param string $reqid Request identifier
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function acceptJoinRequest($id, $reqid)
     {
         $room = Room::where('name', $id)->first();
 
         // This isn't a room, bye bye
         if (!$room) {
             return $this->errorResponse(404, \trans('meet.room-not-found'));
         }
 
         // Only the moderator can do it
         if (!$this->isModerator($room)) {
             return $this->errorResponse(403);
         }
 
         if (!$room->requestAccept($reqid)) {
             return $this->errorResponse(500, \trans('meet.session-request-accept-error'));
         }
 
         return response()->json(['status' => 'success']);
     }
 
     /**
      * Deny the room join request.
      *
      * @param string $id    Room identifier (name)
      * @param string $reqid Request identifier
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function denyJoinRequest($id, $reqid)
     {
         $room = Room::where('name', $id)->first();
 
         // This isn't a room, bye bye
         if (!$room) {
             return $this->errorResponse(404, \trans('meet.room-not-found'));
         }
 
         // Only the moderator can do it
         if (!$this->isModerator($room)) {
             return $this->errorResponse(403);
         }
 
         if (!$room->requestDeny($reqid)) {
             return $this->errorResponse(500, \trans('meet.session-request-deny-error'));
         }
 
         return response()->json(['status' => 'success']);
     }
 
     /**
      * Create a connection for screen sharing.
      *
      * @param string $id Room identifier (name)
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function createConnection($id)
     {
         $room = Room::where('name', $id)->first();
 
         // This isn't a room, bye bye
         if (!$room) {
             return $this->errorResponse(404, \trans('meet.room-not-found'));
         }
 
         $connection = $this->getConnectionFromRequest();
 
         if (
             !$connection
             || $connection->session_id != $room->session_id
             || ($connection->role & Room::ROLE_PUBLISHER) == 0
         ) {
             return $this->errorResponse(403);
         }
 
         $response = $room->getSessionToken(Room::ROLE_SCREEN);
 
         return response()->json(['status' => 'success', 'token' => $response['token']]);
     }
 
     /**
      * Listing of rooms that belong to the authenticated user.
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function index()
     {
         $user = Auth::guard()->user();
 
         $rooms = Room::where('user_id', $user->id)->orderBy('name')->get();
 
         if (count($rooms) == 0) {
             // Create a room for the user (with a random and unique name)
             while (true) {
                 $name = strtolower(\App\Utils::randStr(3, 3, '-'));
                 if (!Room::where('name', $name)->count()) {
                     break;
                 }
             }
 
             $room = Room::create([
                     'name' => $name,
                     'user_id' => $user->id
             ]);
 
             $rooms = collect([$room]);
         }
 
         $result = [
             'list' => $rooms,
             'count' => count($rooms),
         ];
 
         return response()->json($result);
     }
 
     /**
      * Join the room session. Each room has one owner, and the room isn't open until the owner
      * joins (and effectively creates the session).
      *
      * @param string $id Room identifier (name)
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function joinRoom($id)
     {
         $room = Room::where('name', $id)->first();
 
         // Room does not exist, or the owner is deleted
         if (!$room || !$room->owner) {
             return $this->errorResponse(404, \trans('meet.room-not-found'));
         }
 
         // Check if there's still a valid meet entitlement for the room owner
         if (!$room->owner->hasSku('meet')) {
             return $this->errorResponse(404, \trans('meet.room-not-found'));
         }
 
         $user = Auth::guard()->user();
         $isOwner = $user && $user->id == $room->user_id;
         $init = !empty(request()->input('init'));
 
         // There's no existing session
         if (!$room->hasSession()) {
             // Participants can't join the room until the session is created by the owner
             if (!$isOwner) {
                 return $this->errorResponse(422, \trans('meet.session-not-found'), ['code' => 323]);
             }
 
             // The room owner can create the session on request
             if (!$init) {
                 return $this->errorResponse(422, \trans('meet.session-not-found'), ['code' => 324]);
             }
 
             $session = $room->createSession();
 
             if (empty($session)) {
                 return $this->errorResponse(500, \trans('meet.session-create-error'));
             }
         }
 
         $settings = $room->getSettings(['locked', 'nomedia', 'password']);
         $password = (string) $settings['password'];
 
         $config = [
             'locked' => $settings['locked'] === 'true',
             'nomedia' => $settings['nomedia'] === 'true',
             'password' => $isOwner ? $password : '',
             'requires_password' => !$isOwner && strlen($password),
         ];
 
         $response = ['config' => $config];
 
         // Validate room password
         if (!$isOwner && strlen($password)) {
             $request_password = request()->input('password');
             if ($request_password !== $password) {
                 return $this->errorResponse(422, \trans('meet.session-password-error'), $response + ['code' => 325]);
             }
         }
 
         // Handle locked room
         if (!$isOwner && $config['locked']) {
             $nickname = request()->input('nickname');
             $picture = request()->input('picture');
             $requestId = request()->input('requestId');
 
             $request = $requestId ? $room->requestGet($requestId) : null;
 
             $error = \trans('meet.session-room-locked-error');
 
             // Request already has been processed (not accepted yet, but it could be denied)
             if (empty($request['status']) || $request['status'] != Room::REQUEST_ACCEPTED) {
                 if (!$request) {
                     if (empty($nickname) || empty($requestId) || !preg_match('/^[a-z0-9]{8,32}$/i', $requestId)) {
                         return $this->errorResponse(422, $error, $response + ['code' => 326]);
                     }
 
                     if (empty($picture)) {
                         $svg = file_get_contents(resource_path('images/user.svg'));
                         $picture = 'data:image/svg+xml;base64,' . base64_encode($svg);
                     } elseif (!preg_match('|^data:image/png;base64,[a-zA-Z0-9=+/]+$|', $picture)) {
                         return $this->errorResponse(422, $error, $response + ['code' => 326]);
                     }
 
                     // TODO: Resize when big/make safe the user picture?
 
                     $request = ['nickname' => $nickname, 'requestId' => $requestId, 'picture' => $picture];
 
                     if (!$room->requestSave($requestId, $request)) {
                         // FIXME: should we use error code 500?
                         return $this->errorResponse(422, $error, $response + ['code' => 326]);
                     }
 
                     // Send the request (signal) to all moderators
                     $result = $room->signal('joinRequest', $request, Room::ROLE_MODERATOR);
                 }
 
                 return $this->errorResponse(422, $error, $response + ['code' => 327]);
             }
         }
 
         // Initialize connection tokens
         if ($init) {
             // Choose the connection role
             $canPublish = !empty(request()->input('canPublish')) && (empty($config['nomedia']) || $isOwner);
             $role = $canPublish ? Room::ROLE_PUBLISHER : Room::ROLE_SUBSCRIBER;
             if ($isOwner) {
                 $role |= Room::ROLE_MODERATOR;
                 $role |= Room::ROLE_OWNER;
             }
 
             // Create session token for the current user/connection
             $response = $room->getSessionToken($role);
 
             if (empty($response)) {
                 return $this->errorResponse(500, \trans('meet.session-join-error'));
             }
 
-            // Get up-to-date connections metadata
-            $response['connections'] = $room->getSessionConnections();
-
             $response_code = 200;
             $response['role'] = $role;
             $response['config'] = $config;
         } else {
             $response_code = 422;
             $response['code'] = 322;
         }
 
         return response()->json($response, $response_code);
     }
 
     /**
      * Set the domain configuration.
      *
      * @param string $id Room identifier (name)
      *
      * @return \Illuminate\Http\JsonResponse|void
      */
     public function setRoomConfig($id)
     {
         $room = Room::where('name', $id)->first();
 
         // Room does not exist, or the owner is deleted
         if (!$room || !$room->owner) {
             return $this->errorResponse(404);
         }
 
         $user = Auth::guard()->user();
 
         // Only room owner can configure the room
         if ($user->id != $room->user_id) {
             return $this->errorResponse(403);
         }
 
         $input = request()->input();
         $errors = [];
 
         foreach ($input as $key => $value) {
             switch ($key) {
                 case 'password':
                     if ($value === null || $value === '') {
                         $input[$key] = null;
                     } else {
                         // TODO: Do we have to validate the password in any way?
                     }
                     break;
 
                 case 'locked':
                     $input[$key] = $value ? 'true' : null;
                     break;
 
                 case 'nomedia':
                     $input[$key] = $value ? 'true' : null;
                     break;
 
                 default:
                     $errors[$key] = \trans('meet.room-unsupported-option-error');
             }
         }
 
         if (!empty($errors)) {
             return response()->json(['status' => 'error', 'errors' => $errors], 422);
         }
 
         if (!empty($input)) {
             $room->setSettings($input);
         }
 
         return response()->json([
                 'status' => 'success',
                 'message' => \trans('meet.room-setconfig-success'),
         ]);
     }
 
     /**
      * Update the participant/connection parameters (e.g. role).
      *
      * @param string $id   Room identifier (name)
      * @param string $conn Connection identifier
      *
      * @return \Illuminate\Http\JsonResponse
      */
     public function updateConnection($id, $conn)
     {
         $connection = Connection::where('id', $conn)->first();
 
         // There's no such connection, bye bye
         if (!$connection || $connection->room->name != $id) {
             return $this->errorResponse(404, \trans('meet.connection-not-found'));
         }
 
         foreach (request()->input() as $key => $value) {
             switch ($key) {
-                case 'language':
-                    // Only the moderator can do it
-                    if (!$this->isModerator($connection->room)) {
-                        return $this->errorResponse(403);
-                    }
-
-                    if ($value) {
-                        if (preg_match('/^[a-z]{2}$/', $value)) {
-                            $connection->metadata = ['language' => $value] + $connection->metadata;
-                        }
-                    } else {
-                        $connection->metadata = array_diff_key($connection->metadata, ['language' => 0]);
-                    }
-
-                    break;
-
                 case 'role':
                     // Only the moderator can do it
                     if (!$this->isModerator($connection->room)) {
                         return $this->errorResponse(403);
                     }
 
                     // The 'owner' role is not assignable
                     if ($value & Room::ROLE_OWNER && !($connection->role & Room::ROLE_OWNER)) {
                         return $this->errorResponse(403);
                     } elseif (!($value & Room::ROLE_OWNER) && ($connection->role & Room::ROLE_OWNER)) {
                         return $this->errorResponse(403);
                     }
 
                     // The room owner has always a 'moderator' role
                     if (!($value & Room::ROLE_MODERATOR) && $connection->role & Room::ROLE_OWNER) {
                         $value |= Room::ROLE_MODERATOR;
                     }
 
                     // Promotion to publisher? Put the user hand down
                     if ($value & Room::ROLE_PUBLISHER && !($connection->role & Room::ROLE_PUBLISHER)) {
                         $connection->metadata = array_diff_key($connection->metadata, ['hand' => 0]);
                     }
 
                     // Non-publisher cannot be a language interpreter
                     if (!($value & Room::ROLE_PUBLISHER)) {
                         $connection->metadata = array_diff_key($connection->metadata, ['language' => 0]);
                     }
 
                     $connection->{$key} = $value;
                     break;
             }
         }
 
         // The connection observer will send a signal to everyone when needed
         $connection->save();
 
         return response()->json(['status' => 'success']);
     }
 
     /**
      * Webhook as triggered from OpenVidu server
      *
      * @param \Illuminate\Http\Request $request The API request.
      *
      * @return \Illuminate\Http\Response The response
      */
     public function webhook(Request $request)
     {
         \Log::debug($request->getContent());
 
         switch ((string) $request->input('event')) {
             case 'sessionDestroyed':
                 // When all participants left the room OpenVidu dispatches sessionDestroyed
                 // event. We'll remove the session reference from the database.
                 $sessionId = $request->input('sessionId');
                 $room = Room::where('session_id', $sessionId)->first();
 
                 if ($room) {
                     $room->session_id = null;
                     $room->save();
                 }
 
                 // Remove all connections
                 // Note: We could remove connections one-by-one via the 'participantLeft' event
                 // but that could create many INSERTs when the session (with many participants) ends
                 // So, it is better to remove them all in a single INSERT.
                 Connection::where('session_id', $sessionId)->delete();
 
                 break;
 
             // TODO: We need to update connection state via webhook
             //       I.e. isModerator() checks here require up-to-date
             //       participant role information. Another option might be accepting/denying
             //       join requests via websocket
         }
 
         return response('Success', 200);
     }
 
     /**
      * Check if current user is a moderator for the specified room.
      *
      * @param \App\OpenVidu\Room $room The room
      *
      * @return bool True if the current user is the room moderator
      */
     protected function isModerator(Room $room): bool
     {
         $user = Auth::guard()->user();
 
         // The room owner is a moderator
         if ($user && $user->id == $room->user_id) {
             return true;
         }
 
         // Moderator's authentication via the extra request header
         if (
             ($connection = $this->getConnectionFromRequest())
             && $connection->session_id === $room->session_id
             && $connection->role & Room::ROLE_MODERATOR
         ) {
             return true;
         }
 
         return false;
     }
 
     /**
      * Check if current user "owns" the specified connection.
      *
      * @param \App\OpenVidu\Connection $connection The connection
      *
      * @return bool
      */
     protected function isSelfConnection(Connection $connection): bool
     {
         return ($conn = $this->getConnectionFromRequest())
             && $conn->id === $connection->id;
     }
 
     /**
      * Get the connection object for the token in current request headers.
      * It will also validate the token.
      *
      * @return \App\OpenVidu\Connection|null Connection (if exists and the token is valid)
      */
     protected function getConnectionFromRequest()
     {
         // Authenticate the user via the extra request header
         if ($token = request()->header(self::AUTH_HEADER)) {
             list($connId, ) = explode(':', base64_decode($token), 2);
 
             if (
                 ($connection = Connection::find($connId))
                 && $connection->metadata['authToken'] === $token
             ) {
                 return $connection;
             }
         }
 
         return null;
     }
 }
diff --git a/src/resources/js/meet/client.js b/src/resources/js/meet/client.js
index 6cb8d497..b9bc5e2a 100644
--- a/src/resources/js/meet/client.js
+++ b/src/resources/js/meet/client.js
@@ -1,776 +1,774 @@
 'use strict'
 
 import { Device, parseScalabilityMode } from 'mediasoup-client'
 import Config from './config.js'
 import { Media } from './media.js'
 import { Roles } from './constants.js'
 import { Socket } from './socket.js'
 
 
 function Client()
 {
     let eventHandlers = {}
     let camProducer
     let micProducer
     let screenProducer
     let consumers = {}
     let socket
     let sendTransportInfo
     let sendTransport
     let recvTransport
     let iceServers = []
     let nickname = ''
     let peers = {}
     let joinProps = {}
     let videoSource
     let audioSource
 
     const VIDEO_CONSTRAINTS = {
         'low': {
             width: { ideal: 320 }
         },
         'medium': {
             width: { ideal: 640 }
         },
         'high': {
             width: { ideal: 1280 }
         },
         'veryhigh': {
             width: { ideal: 1920 }
         },
         'ultra': {
             width: { ideal: 3840 }
         }
     }
 
     // Create a device (use browser auto-detection)
     const device = new Device()
 
     // A helper for basic browser media operations
     const media = new Media()
 
     this.media = media
 
     navigator.mediaDevices.addEventListener('devicechange', () => {
         trigger('deviceChange')
     })
 
 
     /**
      * Start a session (join a room)
      */
     this.joinSession = (token, props) => {
         // Store the join properties for later
         joinProps = props
         // Initialize the socket, 'roomReady' request handler will do the rest of the job
         socket = initSocket(token)
     }
 
     /**
      * Close the session (disconnect)
      */
     this.closeSession = async (reason) => {
         // If room owner, send the request to close the room
         if (reason === true && peers.self && peers.self.role & Roles.OWNER) {
             await socket.sendRequest('moderator:closeRoom')
         }
 
         trigger('closeSession', { reason: reason || 'disconnected' })
 
         if (socket) {
             socket.close()
         }
 
         media.setupStop()
 
         // Close mediasoup Transports.
         if (sendTransport) {
             sendTransport.close()
             sendTransport = null
         }
 
         if (recvTransport) {
             recvTransport.close()
             recvTransport = null
         }
 
         // Remove peers' video elements
         Object.keys(peers).forEach(id => {
             let peer = peers[id]
             if (peer.videoElement) {
                 $(peer.videoElement).remove()
             }
         })
 
         // Reset state
         eventHandlers = {}
         camProducer = null
         micProducer = null
         screenProducer = null
         consumers = {}
         peers = {}
     }
 
     this.isJoined = () => {
         return 'self' in peers
     }
 
     this.camMute = async () => {
         if (camProducer) {
             camProducer.pause()
             await socket.sendRequest('pauseProducer', { producerId: camProducer.id })
             trigger('updatePeer', updatePeerState(peers.self))
         }
 
         return this.camStatus()
     }
 
     this.camUnmute = async () => {
         if (camProducer) {
             camProducer.resume()
             await socket.sendRequest('resumeProducer', { producerId: camProducer.id })
             trigger('updatePeer', updatePeerState(peers.self))
         }
 
         return this.camStatus()
     }
 
     this.camStatus = () => {
         return camProducer && !camProducer.paused && !camProducer.closed
     }
 
     this.micMute = async () => {
         if (micProducer) {
             micProducer.pause()
             await socket.sendRequest('pauseProducer', { producerId: micProducer.id })
             trigger('updatePeer', updatePeerState(peers.self))
         }
 
         return this.micStatus()
     }
 
     this.micUnmute = async () => {
         if (micProducer) {
             micProducer.resume()
             await socket.sendRequest('resumeProducer', { producerId: micProducer.id })
             trigger('updatePeer', updatePeerState(peers.self))
         }
 
         return this.micStatus()
     }
 
     this.micStatus = () => {
         return micProducer && !micProducer.paused && !micProducer.closed
     }
 
     this.kickPeer = (peerId) => {
         socket.sendRequest('moderator:kickPeer', { peerId })
     }
 
     this.chatMessage = (message) => {
         socket.sendRequest('chatMessage', { message })
     }
 
     this.raiseHand = async (status) => {
         if (peers.self.raisedHand != status) {
             peers.self.raisedHand = status
             await socket.sendRequest('raisedHand', { raisedHand: status })
             trigger('updatePeer', peers.self, ['raisedHand'])
         }
 
         return status
     }
 
     this.setNickname = (nickname) => {
         if (peers.self.nickname != nickname) {
             peers.self.nickname = nickname
             socket.sendRequest('changeNickname', { nickname })
             trigger('updatePeer', peers.self, ['nickname'])
         }
     }
 
+    this.setLanguage = (peerId, language) => {
+        socket.sendRequest('moderator:changeLanguage', { peerId, language })
+    }
+
     this.addRole = (peerId, role) => {
         socket.sendRequest('moderator:addRole', { peerId, role })
     }
 
     this.removeRole = (peerId, role) => {
         socket.sendRequest('moderator:removeRole', { peerId, role })
     }
 
     /**
      * Register event handlers
      */
     this.on = (eventName, callback) => {
         eventHandlers[eventName] = callback
     }
 
     /**
      * Execute an event handler
      */
     const trigger = (...args) => {
         const eventName = args.shift()
 
         if (eventName in eventHandlers) {
             eventHandlers[eventName].apply(null, args)
         }
     }
 
     const initSocket = (token) => {
         // Connect to websocket
         socket = new Socket(token)
 
         socket.on('disconnect', reason => {
         //    this.closeSession()
         })
 
         socket.on('reconnectFailed', () => {
         //    this.closeSession()
         })
 
         socket.on('request', async (request, cb) => {
             switch (request.method) {
                 case 'newConsumer':
                     const {
                         peerId,
                         producerId,
                         id,
                         kind,
                         rtpParameters,
                         type,
                         appData,
                         producerPaused
                     } = request.data
 
                     const consumer = await recvTransport.consume({
                             id,
                             producerId,
                             kind,
                             rtpParameters
                     })
 
                     consumer.peerId = peerId
 
                     consumer.on('transportclose', () => {
                         // TODO: What actually else needs to be done here?
                         delete consumers[consumer.id]
                     })
 
                     consumers[consumer.id] = consumer
 
                     // We are ready. Answer the request so the server will
                     // resume this Consumer (which was paused for now).
                     cb(null)
 
                     let peer = peers[peerId]
 
                     if (!peer) {
                         return
                     }
 
                     addPeerTrack(peer, consumer.track)
 
                     trigger('updatePeer', peer)
 
                     break
 
                 default:
                     console.error('Unknow request method: ' + request.method)
             }
         })
 
         socket.on('notification', (notification) => {
             switch (notification.method) {
                 case 'roomReady':
                     iceServers = notification.data.iceServers
                     joinRoom()
                     return
 
                 case 'newPeer':
                     peers[notification.data.id] = notification.data
                     trigger('addPeer', notification.data)
                     return
 
                 case 'peerClosed':
                     const { peerId } = notification.data
                     delete peers[peerId]
                     trigger('removePeer', peerId)
                     return
 
                 case 'consumerClosed': {
                     const { consumerId } = notification.data
                     const consumer = consumers[consumerId]
 
                     if (!consumer) {
                         return
                     }
 
                     consumer.close()
 
                     delete consumers[consumerId]
 
                     let peer = peers[consumer.peerId]
 
                     if (peer) {
                         // TODO: Update peer state, remove track
                         trigger('updatePeer', peer)
                     }
 
                     return
                 }
 
                 case 'consumerPaused':
                 case 'consumerResumed': {
                     const { consumerId } = notification.data
                     const consumer = consumers[consumerId]
 
                     if (!consumer) {
                         return
                     }
 
                     consumer[notification.method == 'consumerPaused' ? 'pause' : 'resume']()
 
                     let peer = peers[consumer.peerId]
 
                     if (peer) {
                         trigger('updatePeer', updatePeerState(peer))
                     }
 
                     return
                 }
 
-                case 'changeNickname': {
-                    const { peerId, nickname } = notification.data
-                    const peer = peers[peerId]
-
-                    if (!peer) {
-                        return
-                    }
-
-                    peer.nickname = nickname
+                case 'changeLanguage':
+                    updatePeerProperty(notification.data, 'language')
+                    return
 
-                    trigger('updatePeer', peer, ['nickname'])
+                case 'changeNickname':
+                    updatePeerProperty(notification.data, 'nickname')
                     return
-                }
 
                 case 'changeRole': {
                     const { peerId, role } = notification.data
                     const peer = peers.self.id === peerId ? peers.self : peers[peerId]
 
                     if (!peer) {
                         return
                     }
 
                     let changes = ['role']
 
                     const rolePublisher = role & Roles.PUBLISHER
                     const roleModerator = role & Roles.MODERATOR
                     const isPublisher = peer.role & Roles.PUBLISHER
                     const isModerator = peer.role & Roles.MODERATOR
 
                     if (isPublisher && !rolePublisher) {
                         // demoted to a subscriber
                         changes.push('publisherRole')
 
                         if (peer.isSelf) {
                             // stop publishing any streams
                             this.setMic('', true)
                             this.setCamera('', true)
                         } else {
                             // remove the video element
                             peer.videoElement = null
                             // TODO: Do we need to remove/stop consumers?
                         }
                     } else if (!isPublisher && rolePublisher) {
                         // promoted to a publisher
                         changes.push('publisherRole')
 
                         // create a video element with no tracks
                         setPeerTracks(peer, [])
                     }
 
                     if ((!isModerator && roleModerator) || (isModerator && !roleModerator)) {
                         changes.push('moderatorRole')
                     }
 
                     peer.role = role
 
                     trigger('updatePeer', peer, changes)
                     return
                 }
 
-                case 'chatMessage': {
+                case 'chatMessage':
+                    notification.data.isSelf = notification.data.peerId == peers.self.id
                     trigger('chatMessage', notification.data)
                     return
-                }
 
-                case 'moderator:closeRoom': {
+                case 'moderator:closeRoom':
                     this.closeSession('session-closed')
                     return
-                }
 
-                case 'moderator:kickPeer': {
+                case 'moderator:kickPeer':
                     this.closeSession('session-closed')
                     return
-                }
-
-                case 'raisedHand': {
-                    const { peerId, raisedHand } = notification.data
-                    const peer = peers[peerId]
 
-                    if (!peer) {
-                        return
-                    }
-
-                    peer.raisedHand = raisedHand
-
-                    trigger('updatePeer', peer, ['raisedHand'])
+                case 'raisedHand':
+                    updatePeerProperty(notification.data, 'raisedHand')
                     return
-                }
 
-                case 'signal:joinRequest': {
+                case 'signal:joinRequest':
                     trigger('joinRequest', notification.data)
                     return
-                }
 
                 default:
                     console.error('Unknow notification method: ' + notification.method)
             }
         })
 
         return socket
     }
 
     const joinRoom = async () => {
         const routerRtpCapabilities = await socket.getRtpCapabilities()
 
         routerRtpCapabilities.headerExtensions = routerRtpCapabilities.headerExtensions
             .filter(ext => ext.uri !== 'urn:3gpp:video-orientation')
 
         await device.load({ routerRtpCapabilities })
 
         // Setup the consuming transport (for handling streams of other participants)
         await setRecvTransport()
 
         // Send the "join" request, get room data, participants, etc.
         const { peers: existing, role, id: peerId } = await socket.sendRequest('join', {
                 nickname: joinProps.nickname,
                 rtpCapabilities: device.rtpCapabilities
         })
 
         trigger('joinSuccess')
 
         let peer = {
             id: peerId,
             role,
             nickname: joinProps.nickname,
             isSelf: true
         }
 
         // Add self to the list
         peers.self = peer
 
         // Start publishing webcam and mic (and setup the producing transport)
         await this.setCamera(joinProps.videoSource, true)
         await this.setMic(joinProps.audioSource, true)
 
         updatePeerState(peer)
 
         trigger('addPeer', peer)
 
         // Trigger addPeer event for all peers already in the room, maintain peers list
         existing.forEach(peer => {
             let tracks = []
 
             // We receive newConsumer requests before we add the peer to peers list,
             // therefore we look here for any consumers that belong to this peer and update
             // the peer. If we do not do this we have to wait about 20 seconds for repeated
             // newConsumer requests
             Object.keys(consumers).forEach(cid => {
                 if (consumers[cid].peerId === peer.id) {
                     tracks.push(consumers[cid].track)
                 }
             })
 
             if (tracks.length) {
                 setPeerTracks(peer, tracks)
             }
 
             peers[peer.id] = peer
 
             trigger('addPeer', peer)
         })
     }
 
     this.setCamera = async (deviceId, noUpdate) => {
         // Actually selected device, do nothing
         if (deviceId == videoSource) {
             return
         }
 
         // Remove current device, stop producer
         if (camProducer && !camProducer.closed) {
             camProducer.close()
             await socket.sendRequest('closeProducer', { producerId: camProducer.id })
             setPeerTracks(peers.self, [])
         }
 
         peers.self.videoSource = videoSource = deviceId
 
         if (!deviceId) {
             if (!noUpdate) {
                 trigger('updatePeer', updatePeerState(peers.self), ['videoSource'])
             }
             return
         }
 
         if (!device.canProduce('video')) {
             throw new Error('cannot produce video')
         }
 
         const { aspectRatio, frameRate, resolution } = Config.videoOptions
 
         const track = await media.getTrack({
             video: {
                 deviceId: { ideal: deviceId },
                 ...VIDEO_CONSTRAINTS[resolution],
                 frameRate
             }
         })
 
         await setSendTransport()
 
         // TODO: Simulcast support?
 
         camProducer = await sendTransport.produce({
             track,
             appData: {
                 source : 'webcam'
             }
         })
 /*
         camProducer.on('transportclose', () => {
             camProducer = null
         })
 
         camProducer.on('trackended', () => {
             // disableWebcam()
         })
 */
         // Create/Update the video element
         addPeerTrack(peers.self, track)
         if (!noUpdate) {
             trigger('updatePeer', peers.self, ['videoSource'])
         }
     }
 
     this.setMic = async (deviceId, noUpdate) => {
         // Actually selected device, do nothing
         if (deviceId == audioSource) {
             return
         }
 
         // Remove current device, stop producer
         if (micProducer && !micProducer.closed) {
             micProducer.close()
             await socket.sendRequest('closeProducer', { producerId: micProducer.id })
         }
 
         peers.self.audioSource = audioSource = deviceId
 
         if (!deviceId) {
             if (!noUpdate) {
                 trigger('updatePeer', updatePeerState(peers.self), ['audioSource'])
             }
             return
         }
 
         if (!device.canProduce('audio')) {
             throw new Error('cannot produce audio')
         }
 
         const {
             autoGainControl,
             echoCancellation,
             noiseSuppression,
             sampleRate,
             channelCount,
             volume,
             sampleSize,
             opusStereo,
             opusDtx,
             opusFec,
             opusPtime,
             opusMaxPlaybackRate
         } = Config.audioOptions
 
         const track = await media.getTrack({
             audio: {
                 sampleRate,
                 channelCount,
                 volume,
                 autoGainControl,
                 echoCancellation,
                 noiseSuppression,
                 sampleSize,
                 deviceId: { ideal: deviceId }
             }
         })
 
         await setSendTransport()
 
         micProducer = await sendTransport.produce({
             track,
             codecOptions: {
                 opusStereo,
                 opusDtx,
                 opusFec,
                 opusPtime,
                 opusMaxPlaybackRate
             },
             appData: {
                 source : 'mic'
             }
         })
 /*
         micProducer.on('transportclose', () => {
             micProducer = null
         })
 
         micProducer.on('trackended', () => {
             // disableMic()
         })
 */
         // Note: We're not adding this track to the video element
         if (!noUpdate) {
             trigger('updatePeer', updatePeerState(peers.self), ['audioSource'])
         }
     }
 
     const setPeerTracks = (peer, tracks) => {
         if (!peer.videoElement) {
             peer.videoElement = media.createVideoElement(tracks, { mirror: peer.isSelf })
         } else {
             const stream = new MediaStream()
             tracks.forEach(track => stream.addTrack(track))
             peer.videoElement.srcObject = stream
         }
 
         updatePeerState(peer)
     }
 
     const addPeerTrack = (peer, track) => {
         if (!peer.videoElement) {
             setPeerTracks(peer, [ track ])
             return
         }
 
         const stream = peer.videoElement.srcObject
 
         if (track.kind == 'video') {
             media.removeTracksFromStream(stream, 'Video')
         } else {
             media.removeTracksFromStream(stream, 'Audio')
         }
 
         stream.addTrack(track)
 
         updatePeerState(peer)
     }
 
     const updatePeerState = (peer) => {
         if (peer.isSelf) {
             peer.videoActive = this.camStatus()
             peer.audioActive = this.micStatus()
         } else {
             peer.videoActive = false
             peer.audioActive = false
 
             Object.keys(consumers).forEach(cid => {
                 const consumer = consumers[cid]
 
                 if (consumer.peerId == peer.id) {
                     peer[consumer.kind + 'Active'] = !consumer.paused && !consumer.closed && !consumer.producerPaused
                 }
             })
         }
 
         return peer
     }
 
     const setSendTransport = async () => {
         if (sendTransport && !sendTransport.closed) {
             return
         }
 
         if (!sendTransportInfo) {
             sendTransportInfo = await socket.sendRequest('createWebRtcTransport', {
                     forceTcp: false,
                     producing: true,
                     consuming: false
             })
         }
 
         const { id, iceParameters, iceCandidates, dtlsParameters } = sendTransportInfo
 
         const iceTransportPolicy = (device.handlerName.toLowerCase().includes('firefox') && iceServers) ? 'relay' : undefined
 
         sendTransport = device.createSendTransport({
             id,
             iceParameters,
             iceCandidates,
             dtlsParameters,
             iceServers,
             iceTransportPolicy,
             proprietaryConstraints: { optional: [{ googDscp: true }] }
         })
 
         sendTransport.on('connect', ({ dtlsParameters }, callback, errback) => {
             socket.sendRequest('connectWebRtcTransport', { transportId: sendTransport.id, dtlsParameters })
                 .then(callback)
                 .catch(errback)
         })
 
         sendTransport.on('produce', async ({ kind, rtpParameters, appData }, callback, errback) => {
             try {
                 const { id } = await socket.sendRequest('produce', {
                     transportId: sendTransport.id,
                     kind,
                     rtpParameters,
                     appData
                 })
                 callback({ id })
             } catch (error) {
                 errback(error)
             }
         })
     }
 
     const setRecvTransport = async () => {
         const transportInfo = await socket.sendRequest('createWebRtcTransport', {
                 forceTcp: false,
                 producing: false,
                 consuming: true
         })
 
         const { id, iceParameters, iceCandidates, dtlsParameters } = transportInfo
 
         const iceTransportPolicy = (device.handlerName.toLowerCase().includes('firefox') && iceServers) ? 'relay' : undefined
 
         recvTransport = device.createRecvTransport({
                 id,
                 iceParameters,
                 iceCandidates,
                 dtlsParameters,
                 iceServers,
                 iceTransportPolicy
         })
 
         recvTransport.on('connect', ({ dtlsParameters }, callback, errback) => {
             socket.sendRequest('connectWebRtcTransport', { transportId: recvTransport.id, dtlsParameters })
                 .then(callback)
                 .catch(errback)
         })
     }
+
+    const updatePeerProperty = (data, prop) => {
+        const peerId = data.peerId
+        const peer = peers.self.id === peerId ? peers.self : peers[peerId]
+
+        if (!peer) {
+            return
+        }
+
+        peer[prop] = data[prop]
+
+        trigger('updatePeer', peer, [ prop ])
+    }
 }
 
 export { Client }
diff --git a/src/resources/js/meet/room.js b/src/resources/js/meet/room.js
index 9f03367d..c6174c19 100644
--- a/src/resources/js/meet/room.js
+++ b/src/resources/js/meet/room.js
@@ -1,1083 +1,1081 @@
 'use strict'
 
 import anchorme from 'anchorme'
 import { Client } from './client.js'
 import { Roles } from './constants.js'
 import { Dropdown } from 'bootstrap'
 import { library } from '@fortawesome/fontawesome-svg-core'
 
 function Room(container)
 {
     let sessionData             // Room session metadata
     let peers = {}              // Participants in the session (including self)
     let publishersContainer     // Container element for publishers
     let subscribersContainer    // Container element for subscribers
 
     let chatCount = 0
     let scrollStop
     let $t
 
     const client = new Client()
 
     // Disconnect participant when browser's window close
     window.addEventListener('beforeunload', () => {
         leaveRoom()
     })
 
     window.addEventListener('resize', resize)
 
     // Public methods
     this.isScreenSharingSupported = isScreenSharingSupported
     this.joinRoom = joinRoom
     this.leaveRoom = leaveRoom
     this.raiseHand = raiseHand
     this.setupStart = setupStart
     this.setupStop = setupStop
     this.setupSetAudioDevice = setupSetAudioDevice
     this.setupSetVideoDevice = setupSetVideoDevice
     this.switchAudio = switchAudio
     this.switchChannel = switchChannel
     this.switchScreen = switchScreen
     this.switchVideo = switchVideo
-    this.updateSession = updateSession
 
     /**
      * Join the room session
      *
      * @param data Session metadata and event handlers:
      *      token           - A token for the main connection,
      *      shareToken      - A token for screen-sharing connection,
      *      nickname        - Participant name,
      *      languages       - Supported languages (code-to-label map)
      *      chatElement     - DOM element for the chat widget,
      *      counterElement  - DOM element for the participants counter,
      *      menuElement     - DOM element of the room toolbar,
      *      queueElement    - DOM element for the Q&A queue (users with a raised hand)
-     *      onSuccess           - Callback for session connection (join) success
-     *      onError             - Callback for session connection (join) error
-     *      onDestroy           - Callback for session disconnection event,
-     *      onJoinRequest       - Callback for join request,
-     *      onSessionDataUpdate - Callback for current user connection update,
-     *      onMediaSetup        - Called when user clicks the Media setup button
-     *      translate           - Translation function
+     *      onSuccess       - Callback for session connection (join) success
+     *      onError         - Callback for session connection (join) error
+     *      onDestroy       - Callback for session disconnection event,
+     *      onJoinRequest   - Callback for join request,
+     *      onUpdate        - Callback for current user/session update,
+     *      onMediaSetup    - Called when user clicks the Media setup button
+     *      translate       - Translation function
      */
     function joinRoom(data) {
         // Create a container for subscribers and publishers
         publishersContainer = $('<div id="meet-publishers">').appendTo(container).get(0)
         subscribersContainer = $('<div id="meet-subscribers">').appendTo(container).get(0)
 
         resize();
 
         $t = data.translate
 
         // Make sure all supported callbacks exist, so we don't have to check
         // their existence everywhere anymore
         let events = ['Success', 'Error', 'Destroy', 'JoinRequest', 'SessionDataUpdate', 'MediaSetup']
 
         events.map(event => 'on' + event).forEach(event => {
             if (!data[event]) {
                 data[event] = () => {}
             }
         })
 
         sessionData = data
 
         // Participant added (including self)
         client.on('addPeer', (event) => {
             console.log('addPeer', event)
 
             event.element = participantCreate(event)
 
             peers[event.id] = event
+
+            updateSession()
         })
 
         // Participant removed
         client.on('removePeer', (peerId) => {
             console.log('removePeer', peerId)
 
             let peer = peers[peerId]
 
             if (peer) {
                 // Remove elements related to the participant
                 peerHandDown(peer)
                 $(peer.element).remove()
                 delete peers[peerId]
             }
 
+            updateSession()
+
             resize()
         })
 
         // Participant properties changed e.g. audio/video muted/unmuted
         client.on('updatePeer', (event, changed) => {
             console.log('updatePeer', event)
 
             let peer = peers[event.id]
 
             if (!peer) {
                 return
             }
 
             event.element = peer.element
 
             if (event.videoElement && event.videoElement.parentNode != event.element) {
                 $(event.element).prepend(event.videoElement)
             } else if (!event.videoElement) {
                 $(event.element).find('video').remove()
             }
 
             if (changed && changed.length) {
                 if (changed && changed.includes('nickname')) {
                      nicknameUpdate(event.nickname, event.id)
                 }
 
                 if (changed.includes('raisedHand')) {
                      if (event.raisedHand) {
                         peerHandUp(event)
                     } else {
                         peerHandDown(event)
                     }
                 }
             }
 
             event.element = participantUpdate(event.element, event)
 
             // It's me, got publisher role
             if (peer.isSelf && (event.role & Roles.PUBLISHER) && changed && changed.includes('publisherRole')) {
                 // Open the media setup dialog
                 sessionData.onMediaSetup()
             }
-/*
-            // Update channels list
-            sessionData.channels = getChannels(peers)
-
-            // The channel user was using has been removed (or rather the participant stopped being an interpreter)
-            if (sessionData.channel && !sessionData.channels.includes(sessionData.channel)) {
-                sessionData.channel = null
-                refresh = true
-            }
-*/
-            if (changed && changed.includes('moderatorRole')) {
-                participantUpdateAll()
-            }
-
-            // Inform the vue component, so it can update some UI controls
-            // sessionData.onSessionDataUpdate(sessionData)
 
             peers[event.id] = event
+
+            updateSession(changed && changed.includes('moderatorRole'))
         })
 
         client.on('joinSuccess', () => {
             data.onSuccess()
             client.media.setupStop()
         })
 
         client.on('joinRequest', event => {
             data.onJoinRequest(event)
         })
 
         // Handle session disconnection events
         client.on('closeSession', event => {
             // Notify the UI
             data.onDestroy(event)
 
             // Remove all participant elements
             Object.keys(peers).forEach(peerId => {
                 $(peers[peerId].element).remove()
             })
             peers = {}
 
             // refresh the matrix
             resize()
         })
 
         const { audioSource, videoSource } = client.media.setupData()
 
         // Start the session
         client.joinSession(data.token, { videoSource, audioSource, nickname: data.nickname })
 
         // Prepare the chat
         initChat()
     }
 
     /**
      * Leave the room (disconnect)
      */
     function leaveRoom(forced) {
         client.closeSession(forced)
         peers = {}
     }
 
     /**
      * Raise or lower the hand
      *
      * @param status Hand raised or not
      */
     async function raiseHand(status) {
         return await client.raiseHand(status)
     }
 
     /**
      * Sets the audio and video devices for the session.
      * This will ask user for permission to access media devices.
      *
      * @param props Setup properties (videoElement, volumeElement, onSuccess, onError)
      */
     function setupStart(props) {
         client.media.setupStart(props)
 
         // When setting up devices while the session is ongoing we have to
         // disable currently selected devices (temporarily) otherwise e.g.
         // changing a mic or camera to another device will not be possible.
         if (client.isJoined()) {
             client.setMic('')
             client.setCamera('')
         }
     }
 
     /**
      * Stop the setup "process", cleanup after it.
      */
     async function setupStop() {
         client.media.setupStop()
 
         // Apply device changes to the client
         const { audioSource, videoSource } = client.media.setupData()
         await client.setMic(audioSource)
         await client.setCamera(videoSource)
     }
 
     /**
      * Change the publisher audio device
      *
      * @param deviceId Device identifier string
      */
     async function setupSetAudioDevice(deviceId) {
         return await client.media.setupSetAudio(deviceId)
     }
 
     /**
      * Change the publisher video device
      *
      * @param deviceId Device identifier string
      */
     async function setupSetVideoDevice(deviceId) {
         return await client.media.setupSetVideo(deviceId)
     }
 
     /**
      * Setup the chat UI
      */
     function initChat() {
         // Handle arriving chat messages
         client.on('chatMessage', pushChatMessage)
 
         // The UI elements are created in the vue template
         // Here we add a logic for how they work
 
         const chat = $(sessionData.chatElement).find('.chat').get(0)
         const textarea = $(sessionData.chatElement).find('textarea')
         const button = $(sessionData.menuElement).find('.link-chat')
 
         textarea.on('keydown', e => {
             if (e.keyCode == 13 && !e.shiftKey) {
                 if (textarea.val().length) {
                     client.chatMessage(textarea.val())
                     textarea.val('')
                 }
 
                 return false
             }
         })
 
         // Add an element for the count of unread messages on the chat button
         button.append('<span class="badge badge-dark blinker">')
             .on('click', () => {
                 button.find('.badge').text('')
                 chatCount = 0
                 // When opening the chat scroll it to the bottom, or we shouldn't?
                 scrollStop = false
                 chat.scrollTop = chat.scrollHeight
             })
 
         $(chat).on('scroll', event => {
             // Detect manual scrollbar moves, disable auto-scrolling until
             // the scrollbar is positioned on the element bottom again
             scrollStop = chat.scrollTop + chat.offsetHeight < chat.scrollHeight
         })
     }
 
     /**
      * Add a message to the chat
      *
      * @param data Object with a message, nickname, id (of the connection, empty for self)
      */
     function pushChatMessage(data) {
         let message = $('<span>').text(data.message).text() // make the message secure
 
         // Format the message, convert emails and urls to links
         message = anchorme({
             input: message,
             options: {
                 attributes: {
                     target: "_blank"
                 },
                 // any link above 20 characters will be truncated
                 // to 20 characters and ellipses at the end
                 truncate: 20,
                 // characters will be taken out of the middle
                 middleTruncation: true
             }
             // TODO: anchorme is extensible, we could support
             //       github/phabricator's markup e.g. backticks for code samples
         })
 
         message = message.replace(/\r?\n/, '<br>')
 
         // Display the message
-        let isSelf = false // TODO
         let chat = $(sessionData.chatElement).find('.chat')
         let box = chat.find('.message').last()
 
         message = $('<div>').html(message)
 
         message.find('a').attr('rel', 'noreferrer')
 
         if (box.length && box.data('id') == data.peerId) {
             // A message from the same user as the last message, no new box needed
             message.appendTo(box)
         } else {
             box = $('<div class="message">').data('id', data.peerId)
                 .append($('<div class="nickname">').text(data.nickname || ''))
                 .append(message)
                 .appendTo(chat)
 
-            if (isSelf) {
+            if (data.isSelf) {
                 box.addClass('self')
             }
         }
 
         // Count unread messages
         if (!$(sessionData.chatElement).is('.open')) {
-            if (!isSelf) {
+            if (!data.isSelf) {
                 chatCount++
             }
         } else {
             chatCount = 0
         }
 
         $(sessionData.menuElement).find('.link-chat .badge').text(chatCount ? chatCount : '')
 
         // Scroll the chat element to the end
         if (!scrollStop) {
             chat.get(0).scrollTop = chat.get(0).scrollHeight
         }
     }
 
     /**
      * Switch interpreted language channel
      *
      * @param channel Two-letter language code
      */
     function switchChannel(channel) {
         sessionData.channel = channel
-
-        // Mute/unmute all peers depending on the selected channel
-        participantUpdateAll()
+        updateSession(true)
     }
 
     /**
      * Mute/Unmute audio for current session publisher
      */
     async function switchAudio() {
         const isActive = client.micStatus()
 
         if (isActive) {
             return await client.micMute()
         } else {
             return await client.micUnmute()
         }
     }
 
     /**
      * Mute/Unmute video for current session publisher
      */
     async function switchVideo() {
         const isActive = client.camStatus()
 
         if (isActive) {
             return await client.camMute()
         } else {
             return await client.camUnmute()
         }
     }
 
     /**
      * Switch on/off screen sharing
      */
     function switchScreen(callback) {
         // TODO
     }
 
     /**
      * Detect if screen sharing is supported by the browser
      */
     function isScreenSharingSupported() {
         return false // TODO !!(navigator.mediaDevices && navigator.mediaDevices.getDisplayMedia)
     }
 
     /**
      * Handler for Hand-Up "signal"
      */
     function peerHandUp(peer) {
         let element = $(nicknameWidget(peer))
 
         participantUpdate(element, peer)
 
         element.attr('id', 'qa' + peer.id)
             .appendTo($(sessionData.queueElement).show())
 
         setTimeout(() => element.addClass('widdle'), 50)
     }
 
     /**
      * Handler for Hand-Down "signal"
      */
     function peerHandDown(peer) {
         let list = $(sessionData.queueElement)
 
         list.find('#qa' + peer.id).remove();
 
         if (!list.find('.meet-nickname').length) {
             list.hide();
         }
     }
 
     /**
      * Update participant nickname in the UI
      *
      * @param nickname Nickname
      * @param peerId   Connection identifier of the user
      */
     function nicknameUpdate(nickname, peerId) {
         if (peerId) {
             $(sessionData.chatElement).find('.chat').find('.message').each(function() {
                 let elem = $(this)
                 if (elem.data('id') == peerId) {
                     elem.find('.nickname').text(nickname || '')
                 }
             })
 
             $(sessionData.queueElement).find('#qa' + peerId + ' .content').text(nickname || '')
         }
     }
 
     /**
      * Create a participant element in the matrix. Depending on the peer role
      * parameter it will be a video element wrapper inside the matrix or a simple
      * tag-like element on the subscribers list.
      *
      * @param params  Peer metadata/params
      * @param content Optional content to prepend to the element
      *
      * @return The element
      */
     function participantCreate(params, content) {
         let element
 
         if ((!params.language && params.role & Roles.PUBLISHER) || params.role & Roles.SCREEN) {
             // publishers and shared screens
             element = publisherCreate(params, content)
 
             if (params.videoElement) {
                 $(element).prepend(params.videoElement)
             }
         } else {
             // subscribers and language interpreters
             element = subscriberCreate(params, content)
         }
 
         setTimeout(resize, 50);
 
         return element
     }
 
     /**
      * Create a <video> element wrapper with controls
      *
      * @param params  Connection metadata/params
      * @param content Optional content to prepend to the element
      */
     function publisherCreate(params, content) {
         let isScreen = params.role & Roles.SCREEN
 
         // Create the element
         let wrapper = $(
             '<div class="meet-video">'
             + svgIcon('user', 'fas', 'watermark')
             + '<div class="controls">'
                 + '<button type="button" class="btn btn-link link-setup hidden" title="' + $t('meet.media-setup') + '">' + svgIcon('cog') + '</button>'
                 + '<div class="volume hidden"><input type="range" min="0" max="1" step="0.1" /></div>'
                 + '<button type="button" class="btn btn-link link-audio hidden" title="' + $t('meet.menu-audio-mute') + '">' + svgIcon('volume-mute') + '</button>'
                 + '<button type="button" class="btn btn-link link-fullscreen closed hidden" title="' + $t('meet.menu-fullscreen') + '">' + svgIcon('expand') + '</button>'
                 + '<button type="button" class="btn btn-link link-fullscreen open hidden" title="' + $t('meet.menu-fullscreen') + '">' + svgIcon('compress') + '</button>'
             + '</div>'
             + '<div class="status">'
                 + '<span class="bg-warning status-audio hidden">' + svgIcon('microphone-slash') + '</span>'
                 + '<span class="bg-warning status-video hidden">' + svgIcon('video-slash') + '</span>'
             + '</div>'
             + '</div>'
         )
 
         // Append the nickname widget
         wrapper.find('.controls').before(nicknameWidget(params))
 
         if (content) {
             wrapper.prepend(content)
         }
 
         if (isScreen) {
             wrapper.addClass('screen')
         }
 
         if (params.isSelf) {
             wrapper.find('.link-setup').removeClass('hidden').on('click', () => sessionData.onMediaSetup())
         } else {
             let volumeInput = wrapper.find('.volume input')
             let audioButton = wrapper.find('.link-audio')
             let inVolume = false
             let hideVolumeTimeout
             let hideVolume = () => {
                 if (inVolume) {
                     hideVolumeTimeout = setTimeout(hideVolume, 1000)
                 } else {
                     volumeInput.parent().addClass('hidden')
                 }
             }
 
             // Enable and set up the audio mute button
             audioButton.removeClass('hidden')
                 .on('click', e => {
                     let video = wrapper.find('video')[0]
 
                     video.muted = !video.muted
                     video.volume = video.muted ? 0 : 1
 
                     audioButton[video.muted ? 'addClass' : 'removeClass']('text-danger')
                     volumeInput.val(video.volume)
                 })
                 // Show the volume slider when mouse is over the audio mute/unmute button
                 .on('mouseenter', () => {
                     let video = wrapper.find('video')[0]
 
                     clearTimeout(hideVolumeTimeout)
                     volumeInput.parent().removeClass('hidden')
                     volumeInput.val(video.volume)
                 })
                 .on('mouseleave', () => {
                     hideVolumeTimeout = setTimeout(hideVolume, 1000)
                 })
 
             // Set up the audio volume control
             volumeInput
                 .on('mouseenter', () => { inVolume = true })
                 .on('mouseleave', () => { inVolume = false })
                 .on('change input', () => {
                     let video = wrapper.find('video')[0]
                     let volume = volumeInput.val()
 
                     video.volume = volume
                     video.muted = volume == 0
                     audioButton[video.muted ? 'addClass' : 'removeClass']('text-danger')
                 })
         }
 
         participantUpdate(wrapper, params, true)
 
         // Fullscreen control
         if (document.fullscreenEnabled) {
             wrapper.find('.link-fullscreen.closed').removeClass('hidden')
                 .on('click', () => {
                     wrapper.get(0).requestFullscreen()
                 })
 
             wrapper.find('.link-fullscreen.open')
                 .on('click', () => {
                     document.exitFullscreen()
                 })
 
             wrapper.on('fullscreenchange', () => {
                 // const enabled = document.fullscreenElement
                 wrapper.find('.link-fullscreen').toggleClass('hidden')
             })
         }
 
         // Remove the subscriber element, if exists
         $('#subscriber-' + params.id).remove()
 
         let prio = params.isSelf || (isScreen && !$(publishersContainer).children('.screen').length)
 
         return wrapper[prio ? 'prependTo' : 'appendTo'](publishersContainer)
             .attr('id', 'publisher-' + params.id)
             .get(0)
     }
 
     /**
      * Update the publisher/subscriber element controls
      *
      * @param wrapper The wrapper element
      * @param params  Peer metadata/params
      */
     function participantUpdate(wrapper, params, noupdate) {
         const element = $(wrapper)
         const isModerator = params.role & Roles.MODERATOR
         const isSelf = params.isSelf
         const rolePublisher = params.role & Roles.PUBLISHER
         const roleModerator = params.role & Roles.MODERATOR
         const roleScreen = params.role & Roles.SCREEN
         const roleOwner = params.role & Roles.OWNER
         const roleInterpreter = rolePublisher && !!params.language
 
         if (!noupdate && !roleScreen) {
             const isPublisher = element.is('.meet-video')
 
             // Publisher-to-interpreter or vice-versa, move element to the subscribers list or vice-versa,
             // but keep the existing video element
             if (
                 !isSelf
                 && element.find('video').length
                 && ((roleInterpreter && isPublisher) || (!roleInterpreter && !isPublisher && rolePublisher))
             ) {
                 wrapper = participantCreate(params, element.find('video'))
                 element.remove()
                 return wrapper
             }
 
             // Handle publisher-to-subscriber and subscriber-to-publisher change
             if (
                 !roleInterpreter
                 && (rolePublisher && !isPublisher) || (!rolePublisher && isPublisher)
             ) {
                 element.remove()
                 return participantCreate(params)
             }
         }
 
         let muted = false
         let video = element.find('video')[0]
 
         // When a channel is selected - mute everyone except the interpreter of the language.
         // When a channel is not selected - mute language interpreters only
         if (sessionData.channel) {
             muted = !(roleInterpreter && params.language == sessionData.channel)
         } else {
             muted = roleInterpreter
         }
 
         if (muted && !isSelf) {
             element.find('.status-audio').removeClass('hidden')
             element.find('.link-audio').addClass('hidden')
         } else {
             element.find('.status-audio')[params.audioActive ? 'addClass' : 'removeClass']('hidden')
 
             if (!isSelf) {
                 element.find('.link-audio').removeClass('hidden')
             }
 
             muted = !params.audioActive || isSelf
         }
 
         element.find('.status-video')[params.videoActive ? 'addClass' : 'removeClass']('hidden')
 
         if (video) {
             video.muted = muted
         }
 
         if ('nickname' in params) {
             element.find('.meet-nickname > .content').text(params.nickname)
         }
 
         if (isSelf) {
             element.addClass('self')
         }
 
         if (isModerator) {
             element.addClass('moderated')
         }
 
         const withPerm = isModerator && !roleScreen && !(roleOwner && !isSelf);
         const withMenu = isSelf || (isModerator && !roleOwner)
 
         // TODO: This probably could be better done with css
         let elements = {
             '.dropdown-menu': withMenu,
             '.permissions': withPerm,
             '.interpreting': withPerm && rolePublisher,
             'svg.moderator': roleModerator,
             'svg.user': !roleModerator && !roleInterpreter,
             'svg.interpreter': !roleModerator && roleInterpreter
         }
 
         Object.keys(elements).forEach(key => {
             element.find(key)[elements[key] ? 'removeClass' : 'addClass']('hidden')
         })
 
         element.find('.action-role-publisher input').prop('checked', rolePublisher)
         element.find('.action-role-moderator input').prop('checked', roleModerator)
             .prop('disabled', roleOwner)
 
         element.find('.interpreting select').val(roleInterpreter ? params.language : '')
 
         return wrapper
     }
 
     /**
      * Update/refresh state of all participants' elements
      */
     function participantUpdateAll() {
         Object.keys(peers).forEach(peerId => {
             const peer = peers[peerId]
             participantUpdate(peer.element, peer)
         })
     }
 
     /**
      * Create a tag-like element for a subscriber participant
      *
      * @param params  Connection metadata/params
      * @param content Optional content to prepend to the element
      */
     function subscriberCreate(params, content) {
         // Create the element
         let wrapper = $('<div class="meet-subscriber">').append(nicknameWidget(params))
 
         if (content) {
             wrapper.prepend(content)
         }
 
         participantUpdate(wrapper, params, true)
 
         return wrapper[params.isSelf ? 'prependTo' : 'appendTo'](subscribersContainer)
             .attr('id', 'subscriber-' + params.id)
             .get(0)
     }
 
     /**
      * Create a tag-like nickname widget
      *
      * @param object params Peer metadata/params
      */
     function nicknameWidget(params) {
         let languages = []
 
         // Append languages selection options
         Object.keys(sessionData.languages).forEach(code => {
             languages.push(`<option value="${code}">${$t(sessionData.languages[code])}</option>`)
         })
 
         // Create the element
         let element = $(
             '<div class="dropdown">'
                 + '<a href="#" class="meet-nickname btn" aria-haspopup="true" aria-expanded="false" role="button">'
                     + '<span class="content"></span>'
                     + '<span class="icon">'
                         + svgIcon('user', null, 'user')
                         + svgIcon('crown', null, 'moderator hidden')
                         + svgIcon('headphones', null, 'interpreter hidden')
                     + '</span>'
                 + '</a>'
                 + '<div class="dropdown-menu">'
                     + '<a class="dropdown-item action-nickname" href="#">Nickname</a>'
                     + '<a class="dropdown-item action-dismiss" href="#">Dismiss</a>'
                     + '<div class="dropdown-divider permissions"></div>'
                     + '<div class="permissions">'
                         + '<h6 class="dropdown-header">' + $t('meet.perm') + '</h6>'
                         + '<label class="dropdown-item action-role-publisher form-check form-switch">'
                             + '<input type="checkbox" class="form-check-input">'
                             + ' <span class="form-check-label">' + $t('meet.perm-av') + '</span>'
                         + '</label>'
                         + '<label class="dropdown-item action-role-moderator form-check form-switch">'
                             + '<input type="checkbox" class="form-check-input">'
                             + ' <span class="form-check-label">' + $t('meet.perm-mod') + '</span>'
                         + '</label>'
                     + '</div>'
-/* TODO
                     + '<div class="dropdown-divider interpreting"></div>'
                     + '<div class="interpreting">'
                         + '<h6 class="dropdown-header">' + $t('meet.lang-int') + '</h6>'
                         + '<div class="ps-3 pe-3"><select class="form-select">'
                             + '<option value="">- ' + $t('form.none') + ' -</option>'
                             + languages.join('')
                         + '</select></div>'
                     + '</div>'
-*/
                 + '</div>'
             + '</div>'
         )
 
         let nickname = element.find('.meet-nickname')
             .addClass('btn btn-outline-' + (params.isSelf ? 'primary' : 'secondary'))
             .attr({title: $t('meet.menu-options'), 'data-bs-toggle': 'dropdown'})
 
         const dropdown = new Dropdown(nickname[0], { boundary: container.parentNode })
 
         if (params.isSelf) {
             // Add events for nickname change
             let editable = element.find('.content')[0]
             let editableEnable = () => {
                 editable.contentEditable = true
                 editable.focus()
             }
             let editableUpdate = () => {
                 // Skip redundant update on blur, if it was already updated
                 if (editable.contentEditable !== 'false') {
                     editable.contentEditable = false
                     client.setNickname(editable.innerText)
                 }
             }
 
             element.find('.action-nickname').on('click', editableEnable)
             element.find('.action-dismiss').remove()
 
             $(editable).on('blur', editableUpdate)
                 .on('keydown', e => {
                     // Enter or Esc
                     if (e.keyCode == 13 || e.keyCode == 27) {
                         editableUpdate()
                         return false
                     }
 
                     // Do not propagate the event, so it does not interfere with our
                     // keyboard shortcuts
                     e.stopPropagation()
                 })
         } else {
             element.find('.action-nickname').remove()
 
             element.find('.action-dismiss').on('click', () => {
                 client.kickPeer(params.id)
             })
         }
 
         // Don't close the menu on permission change
         element.find('.dropdown-menu > label').on('click', e => { e.stopPropagation() })
 
         element.find('.action-role-publisher input').on('change', e => {
             client[e.target.checked ? 'addRole' : 'removeRole'](params.id, Roles.PUBLISHER)
         })
 
         element.find('.action-role-moderator input').on('change', e => {
             client[e.target.checked ? 'addRole' : 'removeRole'](params.id, Roles.MODERATOR)
         })
-/*
+
         element.find('.interpreting select')
             .on('change', e => {
                 const language = $(e.target).val()
-                sessionData.onConnectionChange(params.id, { language })
+                client.setLanguage(params.id, language)
                 dropdown.hide()
             })
             .on('click', e => {
                 // Prevents from closing the dropdown menu on click
                 e.stopPropagation()
             })
-*/
+
         return element.get(0)
     }
 
     /**
      * Window onresize event handler (updates room layout)
      */
     function resize() {
         if (publishersContainer) {
             updateLayout()
         }
 
         $(container).parent()[window.screen.width <= 768 ? 'addClass' : 'removeClass']('mobile')
     }
 
     /**
      * Update the room "matrix" layout
      */
     function updateLayout() {
         let publishers = $(publishersContainer).find('.meet-video')
         let numOfVideos = publishers.length
 
         if (sessionData && sessionData.counterElement) {
             sessionData.counterElement.innerHTML = Object.keys(peers).length
         }
 
         if (!numOfVideos) {
             subscribersContainer.style.minHeight = 'auto'
             return
         }
 
         // Note: offsetHeight/offsetWidth return rounded values, but for proper matrix
         // calculations we need more precision, therefore we use getBoundingClientRect()
 
         let allHeight = container.offsetHeight
         let scrollHeight = subscribersContainer.scrollHeight
         let bcr = publishersContainer.getBoundingClientRect()
         let containerWidth = bcr.width
         let containerHeight = bcr.height
         let limit = Math.ceil(allHeight * 0.25) // max subscribers list height
 
         // Fix subscribers list height
         if (subscribersContainer.offsetHeight <= scrollHeight) {
             limit = Math.min(scrollHeight, limit)
             subscribersContainer.style.minHeight = limit + 'px'
             containerHeight = allHeight - limit
         } else {
             subscribersContainer.style.minHeight = 'auto'
         }
 
         let css, rows, cols, height, padding = 0
 
         // Make the first screen sharing tile big
         let screenVideo = publishers.filter('.screen').find('video').get(0)
 
 /*
         if (screenVideo) {
             const element = screenVideo.parentNode
             const peerId = element.id.replace(/^publisher-/, '')
             const peer = peers[peerId]
 
             // We know the shared screen video dimensions, we can calculate
             // width/height of the tile in the matrix
             if (peer && peer.videoDimensions) {
                 let screenWidth = peer.videoDimensions.width
                 let screenHeight = containerHeight
 
                 // TODO: When the shared window is minimized the width/height is set to 1 (or 2)
                 //       - at least on my system. We might need to handle this case nicer. Right now
                 //       it create a 1-2px line on the left of the matrix - not a big issue.
                 // TODO: Make the 0.666 factor bigger for wide screen and small number of participants?
                 let maxWidth = Math.ceil(containerWidth * 0.666)
 
                 if (screenWidth > maxWidth) {
                     screenWidth = maxWidth
                 }
 
                 // Set the tile position and size
                 $(element).css({
                     width: screenWidth + 'px',
                     height: screenHeight + 'px',
                     position: 'absolute',
                     top: 0,
                     left: 0
                 })
 
                 padding = screenWidth + 'px'
 
                 // Now the estate for the rest of participants is what's left on the right side
                 containerWidth -= screenWidth
                 publishers = publishers.not(element)
                 numOfVideos -= 1
             }
         }
 */
         // Compensate the shared screen estate with a padding
         $(publishersContainer).css('padding-left', padding)
 
         const factor = containerWidth / containerHeight
 
         if (factor >= 16/9) {
             if (numOfVideos <= 3) {
                 rows = 1
             } else if (numOfVideos <= 8) {
                 rows = 2
             } else if (numOfVideos <= 15) {
                 rows = 3
             } else if (numOfVideos <= 20) {
                 rows = 4
             } else {
                 rows = 5
             }
 
             cols = Math.ceil(numOfVideos / rows)
         } else {
             if (numOfVideos == 1) {
                 cols = 1
             } else if (numOfVideos <= 4) {
                 cols = 2
             } else if (numOfVideos <= 9) {
                 cols = 3
             } else if (numOfVideos <= 16) {
                 cols = 4
             } else if (numOfVideos <= 25) {
                 cols = 5
             } else {
                 cols = 6
             }
 
             rows = Math.ceil(numOfVideos / cols)
 
             if (rows < cols && containerWidth < containerHeight) {
                 cols = rows
                 rows = Math.ceil(numOfVideos / cols)
             }
         }
 
         // console.log('factor=' + factor, 'num=' + numOfVideos, 'cols = '+cols, 'rows=' + rows);
 
         // Update all tiles (except the main shared screen) in the matrix
         publishers.css({
             width: (containerWidth / cols) + 'px',
             // Height must be in pixels to make object-fit:cover working
             height:  (containerHeight / rows) + 'px'
         })
     }
 
     /**
      * Create an svg element (string) for a FontAwesome icon
      *
      * @todo Find if there's a "official" way to do this
      */
     function svgIcon(name, type, className) {
         // Note: the library will contain definitions for all icons registered elswhere
         const icon = library.definitions[type || 'fas'][name]
 
         let attrs = {
             'class': 'svg-inline--fa',
             'aria-hidden': true,
             focusable: false,
             role: 'img',
             xmlns: 'http://www.w3.org/2000/svg',
             viewBox: `0 0 ${icon[0]} ${icon[1]}`
         }
 
         if (className) {
             attrs['class'] += ' ' + className
         }
 
         return $(`<svg><path fill="currentColor" d="${icon[4]}"></path></svg>`)
             .attr(attrs)
             .get(0).outerHTML
     }
 
     /**
-     * A way to update some session data, after you joined the room
+     * Update the session state
      *
-     * @param data Same input as for joinRoom()
+     * @param force Force UI refresh
      */
-    function updateSession(data) {
-        sessionData.shareToken = data.shareToken
+    function updateSession(force) {
+        // Update channels list
+        sessionData.channels = getChannels(peers)
+
+        // The channel user was using has been removed (or the participant stopped being an interpreter)
+        if (sessionData.channel && !sessionData.channels.includes(sessionData.channel)) {
+            sessionData.channel = null
+            force = true
+        }
+
+        // Mute/unmute all peers depending on the selected channel
+        // Also updates participant menu according to the current user role
+        if (force) {
+            participantUpdateAll()
+        }
+
+        // Inform the vue component, so it can update some UI controls
+        sessionData.onUpdate(sessionData)
     }
 
     /**
      * Get all existing language interpretation channels
      */
     function getChannels(peers) {
         let channels = []
 
-        Object.keys(peers).forEach(peerId => {
-            let peer = peers[peerId]
-
+        Object.values(peers).forEach(peer => {
             if (peer.language && !channels.includes(peer.language)) {
                 channels.push(peer.language)
             }
         })
 
         return channels
     }
 }
 
 export { Room }
diff --git a/src/resources/vue/Meet/Room.vue b/src/resources/vue/Meet/Room.vue
index 2d90b3e6..0dfc2785 100644
--- a/src/resources/vue/Meet/Room.vue
+++ b/src/resources/vue/Meet/Room.vue
@@ -1,705 +1,685 @@
 <template>
     <div id="meet-component">
         <div id="meet-session-toolbar" class="hidden">
             <span id="meet-counter" :title="$t('meet.partcnt')"><svg-icon icon="users"></svg-icon> <span></span></span>
             <span id="meet-session-logo" v-html="$root.logo()"></span>
             <div id="meet-session-menu">
                 <button :class="'btn link-audio' + (audioActive ? '' : ' on')" @click="switchSound" :disabled="!isPublisher()" :title="$t('meet.menu-audio-' + (audioActive ? 'mute' : 'unmute'))">
                     <svg-icon :icon="audioActive ? 'microphone' : 'microphone-slash'"></svg-icon>
                 </button>
                 <button :class="'btn link-video' + (videoActive ? '' : ' on')" @click="switchVideo" :disabled="!isPublisher()" :title="$t('meet.menu-video-' + (videoActive ? 'mute' : 'unmute'))">
                     <svg-icon :icon="videoActive ? 'video' : 'video-slash'"></svg-icon>
                 </button>
-                <button :class="'btn link-screen' + (screenShareActive ? ' on' : '')" @click="switchScreen" :disabled="!canShareScreen || !isPublisher()" :title="$t('meet.menu-screen')">
+                <button :class="'btn link-screen' + (screenActive ? ' on' : '')" @click="switchScreen" :disabled="!canShareScreen || !isPublisher()" :title="$t('meet.menu-screen')">
                     <svg-icon icon="desktop"></svg-icon>
                 </button>
                 <button :class="'btn link-hand' + (handRaised ? ' on' : '')" v-if="!isPublisher()" @click="switchHand" :title="$t('meet.menu-hand-' + (handRaised ? 'lower' : 'raise'))">
                     <svg-icon icon="hand-paper"></svg-icon>
                 </button>
                 <span id="channel-select" :style="'display:' + (channels.length ? '' : 'none')" class="dropdown">
                     <button :class="'btn link-channel' + (session.channel ? ' on' : '')" data-bs-toggle="dropdown"
                             :title="$t('meet.menu-channel')" aria-haspopup="true" aria-expanded="false"
                     >
                         <svg-icon icon="headphones"></svg-icon>
                         <span class="badge bg-danger" v-if="session.channel">{{ session.channel.toUpperCase() }}</span>
                     </button>
                     <div class="dropdown-menu">
                         <a :class="'dropdown-item' + (!session.channel ? ' active' : '')" href="#" data-code="" @click="switchChannel">- {{ $t('form.none') }} -</a>
                         <a v-for="code in channels" :key="code" href="#" @click="switchChannel" :data-code="code"
                            :class="'dropdown-item' + (session.channel == code ? ' active' : '')"
                         >{{ $t('lang.' + code) }}</a>
                     </div>
                 </span>
                 <button :class="'btn link-chat' + (chatActive ? ' on' : '')" @click="switchChat" :title="$t('meet.menu-chat')">
                     <svg-icon icon="comment"></svg-icon>
                 </button>
                 <button class="btn link-fullscreen closed hidden" @click="switchFullscreen" :title="$t('meet.menu-fullscreen')">
                     <svg-icon icon="expand"></svg-icon>
                 </button>
                 <button class="btn link-fullscreen open hidden" @click="switchFullscreen" :title="$t('meet.menu-fullscreen-exit')">
                     <svg-icon icon="compress"></svg-icon>
                 </button>
                 <button class="btn link-options" v-if="isRoomOwner()" @click="roomOptions" :title="$t('meet.options')">
                     <svg-icon icon="cog"></svg-icon>
                 </button>
                 <button class="btn link-logout" @click="logout" :title="$t('meet.menu-leave')">
                     <svg-icon icon="power-off"></svg-icon>
                 </button>
             </div>
         </div>
 
         <div id="meet-setup" class="card container mt-2 mt-md-5 mb-5">
             <div class="card-body">
                 <div class="card-title">{{ $t('meet.setup-title') }}</div>
                 <div class="card-text">
                     <form class="media-setup-form row" @submit.prevent="joinSession">
                         <div class="media-setup-preview col-sm-6 mb-3 mb-sm-0">
                             <video class="rounded"></video>
                             <div class="volume"><div class="bar"></div></div>
                         </div>
                         <div class="col-sm-6 align-self-center">
                             <div class="input-group mb-2">
                                 <label for="setup-microphone" class="input-group-text mb-0" :title="$t('meet.mic')">
                                     <svg-icon icon="microphone"></svg-icon>
                                 </label>
                                 <select class="form-select" id="setup-microphone" v-model="microphone" @change="setupMicrophoneChange">
                                     <option value="">{{ $t('form.none') }}</option>
                                     <option v-for="mic in setup.microphones" :value="mic.deviceId" :key="mic.deviceId">{{ mic.label }}</option>
                                 </select>
                             </div>
                             <div class="input-group mb-2">
                                 <label for="setup-camera" class="input-group-text mb-0" :title="$t('meet.cam')">
                                     <svg-icon icon="video"></svg-icon>
                                 </label>
                                 <select class="form-select" id="setup-camera" v-model="camera" @change="setupCameraChange">
                                     <option value="">{{ $t('form.none') }}</option>
                                     <option v-for="cam in setup.cameras" :value="cam.deviceId" :key="cam.deviceId">{{ cam.label }}</option>
                                 </select>
                             </div>
                             <div class="input-group mb-2">
                                 <label for="setup-nickname" class="input-group-text mb-0" :title="$t('meet.nick')">
                                     <svg-icon icon="user"></svg-icon>
                                 </label>
                                 <input class="form-control" type="text" id="setup-nickname" v-model="nickname" :placeholder="$t('meet.nick-placeholder')">
                             </div>
                             <div class="input-group mt-2" v-if="session.config && session.config.requires_password">
                                 <label for="setup-password" class="input-group-text mb-0" :title="$t('form.password')">
                                     <svg-icon icon="key"></svg-icon>
                                 </label>
                                 <input type="password" class="form-control" id="setup-password" v-model="password" :placeholder="$t('form.password')">
                             </div>
                             <div class="mt-3">
                                 <button type="submit" id="join-button"
                                         :class="'btn w-100 btn-' + (isRoomReady() ? 'success' : 'primary')"
                                 >
                                     <span v-if="isRoomReady()">{{ $t('meet.joinnow') }}</span>
                                     <span v-else-if="roomState == 323">{{ $t('meet.imaowner') }}</span>
                                     <span v-else>{{ $t('meet.join') }}</span>
                                 </button>
                             </div>
                         </div>
                         <div class="mt-4 col-sm-12">
                             <status-message :status="roomState" :status-labels="roomStateLabels"></status-message>
                         </div>
                     </form>
                 </div>
             </div>
         </div>
 
         <div id="meet-session-layout" class="d-flex hidden">
             <div id="meet-queue">
                 <div class="head" :title="$t('meet.qa')"><svg-icon icon="microphone-alt"></svg-icon></div>
             </div>
             <div id="meet-session"></div>
             <div id="meet-chat">
                 <div class="chat"></div>
                 <div class="chat-input m-2">
                     <textarea class="form-control" rows="1"></textarea>
                 </div>
             </div>
         </div>
 
         <logon-form id="meet-auth" class="hidden" :dashboard="false" @success="authSuccess"></logon-form>
 
         <div id="leave-dialog" class="modal" tabindex="-1" role="dialog">
             <div class="modal-dialog" role="document">
                 <div class="modal-content">
                     <div class="modal-header">
                         <h5 class="modal-title">{{ $t('meet.leave-title') }}</h5>
                         <button type="button" class="btn-close" data-bs-dismiss="modal" :aria-label="$t('btn.close')"></button>
                     </div>
                     <div class="modal-body">
                         <p>{{ $t('meet.leave-body') }}</p>
                     </div>
                     <div class="modal-footer">
                         <button type="button" class="btn btn-danger modal-action" data-bs-dismiss="modal">{{ $t('btn.close') }}</button>
                     </div>
                 </div>
             </div>
         </div>
 
         <div id="media-setup-dialog" class="modal" tabindex="-1" role="dialog">
             <div class="modal-dialog" role="document">
                 <div class="modal-content">
                     <div class="modal-header">
                         <h5 class="modal-title">{{ $t('meet.media-title') }}</h5>
                         <button type="button" class="btn-close" data-bs-dismiss="modal" :aria-label="$t('btn.close')"></button>
                     </div>
                     <div class="modal-body">
                         <form class="media-setup-form">
                             <div class="media-setup-preview"></div>
                             <div class="input-group mt-2">
                                 <label for="setup-mic" class="input-group-text mb-0" :title="$t('meet.mic')">
                                     <svg-icon icon="microphone"></svg-icon>
                                 </label>
                                 <select class="form-select" id="setup-mic" v-model="microphone" @change="setupMicrophoneChange">
                                     <option value="">{{ $t('form.none') }}</option>
                                     <option v-for="mic in setup.microphones" :value="mic.deviceId" :key="mic.deviceId">{{ mic.label }}</option>
                                 </select>
                             </div>
                             <div class="input-group mt-2">
                                 <label for="setup-cam" class="input-group-text mb-0" :title="$t('meet.cam')">
                                     <svg-icon icon="video"></svg-icon>
                                 </label>
                                 <select class="form-select" id="setup-cam" v-model="camera" @change="setupCameraChange">
                                     <option value="">{{ $t('form.none') }}</option>
                                     <option v-for="cam in setup.cameras" :value="cam.deviceId" :key="cam.deviceId">{{ cam.label }}</option>
                                 </select>
                             </div>
                         </form>
                     </div>
                     <div class="modal-footer">
                         <button type="button" class="btn btn-secondary modal-action" data-bs-dismiss="modal">{{ $t('btn.close') }}</button>
                     </div>
                 </div>
             </div>
         </div>
 
         <room-options v-if="session.config" :config="session.config" :room="room" @config-update="configUpdate"></room-options>
     </div>
 </template>
 
 <script>
-    import { Modal } from 'bootstrap'
+    import { Modal, Dropdown } from 'bootstrap'
     import { Media } from '../../js/meet/media.js'
     import { Room as Meet } from '../../js/meet/room.js'
     import { Roles } from '../../js/meet/constants.js'
     import StatusMessage from '../Widgets/StatusMessage'
     import LogonForm from '../Login'
     import RoomOptions from './RoomOptions'
 
     // Register additional icons
     import { library } from '@fortawesome/fontawesome-svg-core'
 
     import {
         faComment,
         faCog,
         faCompress,
         faCrown,
         faDesktop,
         faExpand,
         faHandPaper,
         faHeadphones,
         faMicrophone,
         faMicrophoneSlash,
         faMicrophoneAlt,
         faPowerOff,
         faUser,
         faUsers,
         faVideo,
         faVideoSlash,
         faVolumeMute
     } from '@fortawesome/free-solid-svg-icons'
 
     // Register only these icons we need
     library.add(
         faComment,
         faCog,
         faCompress,
         faCrown,
         faDesktop,
         faExpand,
         faHandPaper,
         faHeadphones,
         faMicrophone,
         faMicrophoneSlash,
         faMicrophoneAlt,
         faPowerOff,
         faUser,
         faUsers,
         faVideo,
         faVideoSlash,
         faVolumeMute
     )
 
     let roomRequest
     const authHeader = 'X-Meet-Auth-Token'
 
     export default {
         components: {
             LogonForm,
             RoomOptions,
             StatusMessage
         },
         data() {
             return {
                 setup: {
                     cameras: [],
                     microphones: [],
                 },
                 canShareScreen: false,
                 camera: '',
                 channels: [],
                 languages: {
                     en: 'lang.en',
                     de: 'lang.de',
                     fr: 'lang.fr',
                     it: 'lang.it'
                 },
                 meet: null,
                 microphone: '',
                 nickname: '',
                 password: '',
                 room: null,
                 roomState: 'init',
                 roomStateLabels: {
                     init: 'meet.status-init',
                     323: 'meet.status-323',
                     324: 'meet.status-324',
                     325: 'meet.status-325',
                     326: 'meet.status-326',
                     327: 'meet.status-327',
                     404: 'meet.status-404',
                     429: 'meet.status-429',
                     500: 'meet.status-500'
                 },
                 session: {},
                 audioActive: false,
                 videoActive: false,
                 chatActive: false,
                 handRaised: false,
-                screenShareActive: false
+                screenActive: false
             }
         },
         mounted() {
             this.room = this.$route.params.room
 
             // Initialize OpenVidu and do some basic checks
             this.meet = new Meet($('#meet-session')[0]);
             this.canShareScreen = this.meet.isScreenSharingSupported()
 
             // Check the room and init the session
             this.initSession()
 
             // Setup the room UI
             this.setupSession()
 
             // Configure dialog events
             $('#leave-dialog')[0].addEventListener('hide.bs.modal', () => {
                 // FIXME: Where exactly the user should land? Currently he'll land
                 //        on dashboard (if he's logged in) or login form (if he's not).
 
                 this.$router.push({ name: 'dashboard' })
             })
 
             const dialog = $('#media-setup-dialog')[0]
             dialog.addEventListener('show.bs.modal', () => { this.setupSession() })
             dialog.addEventListener('hide.bs.modal', () => { this.meet.setupStop() })
         },
         beforeDestroy() {
             clearTimeout(roomRequest)
 
             $('#app').removeClass('meet')
 
             if (this.meet) {
                 this.meet.leaveRoom()
             }
 
             delete axios.defaults.headers.common[authHeader]
 
             $(document.body).off('keydown.meet')
         },
         methods: {
             authSuccess() {
                 // The user authentication succeeded, we still don't know it's really the room owner
                 this.initSession()
 
                 $('#meet-setup').removeClass('hidden')
                 $('#meet-auth').addClass('hidden')
             },
             configUpdate(config) {
                 this.session.config = Object.assign({}, this.session.config, config)
             },
             initSession(init) {
                 const button = $('#join-button').prop('disabled', true)
 
                 this.post = {
                     password: this.password,
                     nickname: this.nickname,
                     screenShare: this.canShareScreen ? 1 : 0,
                     init: init ? 1 : 0,
                     picture: init ? this.makePicture() : '',
                     requestId: this.requestId(),
                     canPublish: !!this.camera || !!this.microphone
                 }
 
                 $('#setup-password,#setup-nickname').removeClass('is-invalid')
 
                 axios.post('/api/v4/openvidu/rooms/' + this.room, this.post, { ignoreErrors: true })
                     .then(response => {
                         button.prop('disabled', false)
 
                         // We already have token, the response is redundant
                         if (this.roomState == 'ready' && this.session.token) {
                             return
                         }
 
                         this.roomState = 'ready'
                         this.session = response.data
 
                         if (init) {
                             this.joinSession()
                         }
 
                         if (this.session.authToken) {
                             axios.defaults.headers.common[authHeader] = this.session.authToken
                         }
                     })
                     .catch(error => {
                         if (!error.response) {
                             console.error(error)
                             return
                         }
 
                         const data = error.response.data || {}
 
                         if (data.code) {
                             this.roomState = data.code
                         } else {
                             this.roomState = error.response.status
                         }
 
                         button.prop('disabled', this.roomState == 'init' || this.roomState == 327 || this.roomState >= 400)
 
                         if (data.config) {
                             this.session.config = data.config
                         }
 
                         switch (this.roomState) {
                             case 323:
                                 // Waiting for the owner to open the room...
                                 // Update room state every 10 seconds
                                 roomRequest = setTimeout(() => { this.initSession() }, 10000)
                                 break;
 
                             case 324:
                                 // Room is ready for the owner, but the 'init' was not requested yet
                                 clearTimeout(roomRequest)
                                 break;
 
                             case 325:
                                 // Missing/invalid password
                                 if (init) {
                                     $('#setup-password').addClass('is-invalid').focus()
                                 }
                                 break;
 
                             case 326:
                                 // Locked room prerequisites error
                                 if (init && !$('#setup-nickname').val()) {
                                     $('#setup-nickname').addClass('is-invalid').focus()
                                 }
                                 break;
 
                             case 327:
                                 // Waiting for the owner's approval to join
                                 // Update room state every 10 seconds
                                 roomRequest = setTimeout(() => { this.initSession(true) }, 10000)
                                 break;
 
                             case 429:
                                 // Rate limited, wait and try again
                                 const waitTime = error.response.headers['retry-after'] || 10
                                 roomRequest = setTimeout(() => { this.initSession(init) }, waitTime * 1000)
                                 break;
 
                             default:
                                 if (this.roomState >= 400 && this.roomState != 404) {
                                     this.roomState = 500
                                 }
                         }
                     })
 
                 if (document.fullscreenEnabled) {
                     $('#meet-session-menu').find('.link-fullscreen.closed').removeClass('hidden')
                 }
             },
             isModerator() {
                 return this.isRoomOwner() || (!!this.session.role && (this.session.role & Roles.MODERATOR) > 0)
             },
             isPublisher() {
                 return !!this.session.role && (this.session.role & Roles.PUBLISHER) > 0
             },
             isRoomOwner() {
                 return !!this.session.role && (this.session.role & Roles.OWNER) > 0
             },
             isRoomReady() {
                 return ['ready', 322, 324, 325, 326, 327].includes(this.roomState)
             },
             // An event received by the room owner when a participant is asking for a permission to join the room
             joinRequest(data) {
                 // The toast for this user request already exists, ignore
                 // It's not really needed as we do this on server-side already
                 if ($('#i' + data.requestId).length) {
                     return
                 }
 
                 // FIXME: Should the message close button act as the Deny button? Do we need the Deny button?
 
                 let body = $(
                     `<div>`
                     + `<div class="picture"><img src="${data.picture}"></div>`
                     + `<div class="content">`
                         + `<p class="mb-2"></p>`
                         + `<div class="text-end">`
                             + `<button type="button" class="btn btn-sm btn-success accept">${this.$t('btn.accept')}</button>`
                             + `<button type="button" class="btn btn-sm btn-danger deny ms-2">${this.$t('btn.deny')}</button>`
                 )
 
                 this.$toast.message({
                     className: 'join-request',
                     icon: 'user',
                     timeout: 0,
                     title: this.$t('meet.join-request'),
                     // titleClassName: '',
                     body: body.html(),
                     onShow: element => {
                         const id = data.requestId
 
                         $(element).find('p').text(this.$t('meet.join-requested', { user: data.nickname || '' }))
 
                         // add id attribute, so we can identify it
                         $(element).attr('id', 'i' + id)
                             // add action to the buttons
                             .find('button.accept,button.deny').on('click', e => {
                                 const action = $(e.target).is('.accept') ? 'accept' : 'deny'
                                 axios.post('/api/v4/openvidu/rooms/' + this.room + '/request/' + id + '/' + action)
                                     .then(response => {
                                         $('#i' + id).remove()
                                     })
                             })
                     }
                 })
             },
             // Entering the room
             joinSession() {
                 // The form can be submitted not only via the submit button,
                 // make sure the submit is allowed
                 if ($('#meet-setup [type=submit]').prop('disabled')) {
                     return;
                 }
 
                 if (this.roomState == 323) {
                     $('#meet-setup').addClass('hidden')
                     $('#meet-auth').removeClass('hidden')
                     return
                 }
 
                 if (this.roomState != 'ready' && !this.session.token) {
                     this.initSession(true)
                     return
                 }
 
                 clearTimeout(roomRequest)
 
                 this.session.nickname = this.nickname
                 this.session.languages = this.languages
                 this.session.menuElement = $('#meet-session-menu')[0]
                 this.session.chatElement = $('#meet-chat')[0]
                 this.session.queueElement = $('#meet-queue')[0]
                 this.session.counterElement = $('#meet-counter span')[0]
                 this.session.translate = (label, args) => this.$t(label, args)
                 this.session.onSuccess = () => {
                     $('#app').addClass('meet')
                     $('#meet-setup').addClass('hidden')
                     $('#meet-session-toolbar,#meet-session-layout').removeClass('hidden')
                 }
                 this.session.onError = () => {
                     this.roomState = 500
                 }
                 this.session.onDestroy = event => {
                     // TODO: Display different message for every other reason
                     if (event.reason == 'session-closed' && !this.isRoomOwner()) {
                         new Modal('#leave-dialog').show()
                     }
                 }
-                this.session.onSessionDataUpdate = data => { this.updateSession(data) }
+                this.session.onUpdate = data => { this.updateSession(data) }
                 this.session.onJoinRequest = data => { this.joinRequest(data) }
                 this.session.onMediaSetup = () => { this.setupMedia() }
 
                 this.meet.joinRoom(this.session)
 
                 this.keyboardShortcuts()
             },
             keyboardShortcuts() {
                 $(document.body).on('keydown.meet', e => {
                     if ($(e.target).is('select,input,textarea')) {
                         return
                     }
 
                     // Self-Mute with 'm' key
                     if (e.key == 'm' || e.key == 'M') {
                         if ($('#meet-session-menu').find('.link-audio:not(:disabled)').length) {
                             this.switchSound()
                         }
                     }
                 })
             },
             logout() {
                 this.meet.leaveRoom(true)
                 this.meet = null
                 this.$router.push({ name: 'dashboard' })
             },
             makePicture() {
                 return (new Media()).makePicture($("#meet-setup video")[0]) || '';
             },
             requestId() {
                 const key = 'kolab-meet-uid'
 
                 if (!this.reqId) {
                     this.reqId = localStorage.getItem(key)
                 }
 
                 if (!this.reqId) {
                     // We store the identifier in the browser to make sure that it is the same after
                     // page refresh for the avg user. This will not prevent hackers from sending
                     // the new identifier on every request.
                     // If we're afraid of a room owner being spammed with join requests we might invent
                     // a way to silently ignore all join requests after the owner pressed some button
                     // stating "all attendees already joined, lock the room for good!".
 
                     // This will create max. 24-char numeric string
                     this.reqId = (String(Date.now()) + String(Math.random()).substring(2)).substring(0, 24)
                     localStorage.setItem(key, this.reqId)
                 }
 
                 return this.reqId
             },
             roomOptions() {
                 new Modal('#room-options-dialog').show()
             },
             setupMedia() {
                 const dialog = $('#media-setup-dialog')[0]
 
                 if (!$('video', dialog).length) {
                     $('#meet-setup').find('video,div.volume').appendTo($('.media-setup-preview', dialog))
                 }
 
                 new Modal(dialog).show()
             },
             setupSession() {
                 this.meet.setupStart({
                     videoElement: $('#meet-setup video')[0] || $('#media-setup-dialog video')[0],
                     volumeElement: $('#meet-setup .volume')[0] || $('#media-setup-dialog .volume')[0],
                     onSuccess: setup => {
                         this.setup = setup
                         this.microphone = setup.audioSource
                         this.camera = setup.videoSource
 
                         this.audioActive = setup.audioActive
                         this.videoActive = setup.videoActive
                     },
                     onError: error => {
                         this.audioActive = false
                         this.videoActive = false
                     }
                 })
             },
             async setupCameraChange() {
                 this.videoActive = await this.meet.setupSetVideoDevice(this.camera)
             },
             async setupMicrophoneChange() {
                 this.audioActive = await this.meet.setupSetAudioDevice(this.microphone)
             },
             switchChannel(e) {
-                let channel = $(e.target).data('code')
-
-                this.$set(this.session, 'channel', channel)
-                this.meet.switchChannel(channel)
+                this.meet.switchChannel($(e.target).data('code'))
+                // FIXME: Why is the menu not closing by itself?
+                new Dropdown('#meet-session-menu .link-channel').hide()
             },
             switchChat() {
                 let chat = $('#meet-chat')
                 let enabled = chat.is('.open')
 
                 chat.toggleClass('open')
 
                 if (!enabled) {
                     chat.find('textarea').focus()
                 }
 
                 this.chatActive = !enabled
 
                 // Trigger resize, so participant matrix can update its layout
                 window.dispatchEvent(new Event('resize'));
             },
             switchFullscreen() {
                 const element = this.$el
 
                 $(element).off('fullscreenchange').on('fullscreenchange', (e) => {
                     let enabled = document.fullscreenElement == element
                     let buttons = $('#meet-session-menu').find('.link-fullscreen')
 
                     buttons.first()[enabled ? 'addClass' : 'removeClass']('hidden')
                     buttons.last()[!enabled ? 'addClass' : 'removeClass']('hidden')
                 })
 
                 if (document.fullscreenElement) {
                     document.exitFullscreen()
                 } else {
                     element.requestFullscreen()
                 }
             },
             async switchHand() {
                 this.handRaised = await this.meet.raiseHand(!this.handRaised)
             },
             async switchSound() {
                 this.audioActive = await this.meet.switchAudio()
             },
             async switchVideo() {
                 this.videoActive = await this.meet.switchVideo()
             },
-            switchScreen() {
-                const switchScreenAction = () => {
-                    this.meet.switchScreen((enabled, error) => {
-                        this.screenShareActive = enabled
-                        if (!enabled && !error) {
-                            // Closing a screen sharing connection invalidates the token
-                            delete this.session.shareToken
-                        }
-                    })
-                }
-
-                if (this.session.shareToken || this.screenShareActive) {
-                    switchScreenAction()
-                } else {
-                    axios.post('/api/v4/openvidu/rooms/' + this.room + '/connections')
-                        .then(response => {
-                            this.session.shareToken = response.data.token
-                            this.meet.updateSession(this.session)
-                            switchScreenAction()
-                        })
-                }
+            async switchScreen() {
+                this.screenActive = await this.meet.switchScreen()
             },
             updateSession(data) {
                 this.session = data
                 this.channels = data.channels || []
 
                 const isPublisher = this.isPublisher()
 
                 this.videoActive = isPublisher ? data.videoActive : false
                 this.audioActive = isPublisher ? data.audioActive : false
-                this.handRaised = data.hand
+                this.handRaised = data.raisedHand
             }
         }
     }
 </script>