Merge 94126a9 into a402180

index.js

@@ -54,6 +54,7 @@ function start() { // eslint-disable-line max-statements
 
   const app = express();
   const httpServer = require('http').Server(app);
+
   const io = require('socket.io')(httpServer);
   const socketIOSetup = require('./realtime/setupSocketIO');
   socketIOSetup.setupNamespace(io);

view/loadView.js

@@ -119,6 +119,7 @@ module.exports = function loadView(app, passport) {
           trackingId: viewConfig.trackingId,
           user: req.user,
           eventThrottle: viewConfig.realtimeEventThrottleMilliseconds,
+          transportProtocol: viewConfig.socketIOtransportProtocol,
         };
 
         const templateVars = Object.assign(

view/perspective/app.js

@@ -95,11 +95,22 @@ function handleEvent(eventData, eventTypeName) {
 function setupSocketIOClient(persBody) {
   const namespace = u.getNamespaceString(persBody);
 
+  /*
+   * if the transprotocol is set, initialize the socketio client with
+   *  the transport protocol options. The transProtocol variable is set in 
+   *  perspective.pug
+   */
+  const options = {};
+  const clientProtocol = transProtocol; 
+  if (clientProtocol !== 'undefined') {
+    options.transports = clientProtocol.replace(/\s*,\s*/g, ',').split(',');
+  }
+
   /*
    * Note: The "io" variable is defined by the "/socket.io.js" script included
    * in perspective.pug.
    */
-  const socket = io(namespace);
+  const socket = io(namespace, options);
   socket.on(eventsQueue.eventType.INTRNL_SUBJ_ADD, (data) => {
     handleEvent(data, eventsQueue.eventType.INTRNL_SUBJ_ADD);
   });

view/perspective/perspective.pug

@@ -30,6 +30,9 @@ html(lang = 'en')
   script(src='/static/socket.io.js')
   script.
     var realtimeEventThrottleMilliseconds = #{eventThrottle};
+  script.
+    var transProtocol = '#{transportProtocol}';
+
   script
       if queryParams
           | var queryParams = !{queryParams}

viewConfig.js

@@ -26,10 +26,14 @@ const DEFAULT_THROTTLE_MILLISECS = 4000;
 const realtimeEventThrottleMilliseconds =
  pe.realtimeEventThrottleMilliseconds || DEFAULT_THROTTLE_MILLISECS;
 
+const socketIOtransportProtocol = pe.SOCKETIO_TRANSPORT_PROTOCOL || 'undefined';
 module.exports = {
   // Make the Google Analytics trackingId available in /view.
   trackingId: pe.GOOGLE_ANALYTICS_ID || 'N/A',
 
   // Make the throttle time available in /view.
   realtimeEventThrottleMilliseconds,
+
+  // Expose the socketIOtransportProtocol variable in the /view
+  socketIOtransportProtocol,
 };