feat(rn,connection) enable XMPP WebSocket on mobile

Co-authored-by: Saúl Ibarra Corretgé <saghul@jitsi.org>

connection.js

 
     serviceUrl += `?room=${roomName}`;
 
-    // FIXME Remove deprecated 'bosh' option assignment at some point(LJM will be accepting only 'serviceUrl' option
-    //  in future). It's included for the time being for Jitsi Meet and lib-jitsi-meet versions interoperability.
-    connectionConfig.serviceUrl = connectionConfig.bosh = serviceUrl;
+    connectionConfig.serviceUrl = serviceUrl;
 
     if (connectionConfig.websocketKeepAliveUrl) {
         connectionConfig.websocketKeepAliveUrl += `?room=${roomName}`;

react/features/analytics/functions.js

     permanentProperties.appName = getAppName();
 
     // Report if user is using websocket
-    permanentProperties.websocket = navigator.product !== 'ReactNative' && typeof config.websocket === 'string';
+    permanentProperties.websocket = typeof config.websocket === 'string';
 
     // Report if user is using the external API
     permanentProperties.externalApi = typeof API_ID === 'number';

react/features/base/connection/actions.native.js

     // redux store.
     const options = _.cloneDeep(state['features/base/config']);
 
-    // Normalize the BOSH URL.
     let { bosh } = options;
+    const { websocket } = options;
 
-    if (bosh) {
+    // Normalize the BOSH URL.
+    if (bosh && !websocket) {
         const { locationURL } = state['features/base/connection'];
 
         if (bosh.startsWith('//')) {
             // eslint-disable-next-line max-len
             bosh = `${protocol}//${host}${contextRoot || '/'}${bosh.substr(1)}`;
         }
+    }
 
-        // Append room to the URL's search.
-        const { room } = state['features/base/conference'];
+    // WebSocket is preferred over BOSH.
+    const serviceUrl = websocket || bosh;
 
-        room && (bosh += `?room=${getBackendSafeRoomName(room)}`);
+    // Append room to the URL's search.
+    const { room } = state['features/base/conference'];
 
-        // FIXME Remove deprecated 'bosh' option assignment at some point.
-        options.serviceUrl = options.bosh = bosh;
+    if (serviceUrl && room) {
+        const roomName = getBackendSafeRoomName(room);
+
+        options.serviceUrl = `${serviceUrl}?room=${roomName}`;
+
+        if (options.websocketKeepAliveUrl) {
+            options.websocketKeepAliveUrl += `?room=${roomName}`;
+        }
     }
 
     return options;