Increased in-exam polling interval from 5 seconds to 30 seconds.

Added query parameter to identify the source of the call to the  AJAX endpoint edx_proctoring.views:StudentProctoredExamAttempt.get:

 ?sourceid=in_exam
 ?sourceid=instructions
 ?sourceid=app_shutdown

edx_proctoring/static/proctoring/js/views/proctored_exam_view.js

@@ -136,15 +136,14 @@ var edx = edx || {};
         updateRemainingTime: function (self) {
             self.timerTick ++;
             self.secondsLeft --;
-            if (self.timerTick % 5 === 0){
-                var url = self.model.url + '/' + self.model.get('attempt_id');
+            if (self.timerTick % 30 === 0){
+                var url = self.model.url + '/' + self.model.get('attempt_id') + '?sourceid=in_exam';
                 $.ajax(url).success(function(data) {
                     if (data.status === 'error') {
                         // The proctoring session is in error state
-                        // refresh the page to
+                        // refresh the page to bring up the new Proctoring state from the backend.
                         clearInterval(self.timerId); // stop the timer once the time finishes.
                         $(window).unbind('beforeunload', self.unloadMessage);
-                        // refresh the page when the timer expired
                         location.reload();
                     }
                     else {

edx_proctoring/static/proctoring/spec/proctored_exam_spec.js

@@ -62,7 +62,7 @@ describe('ProctoredExamView', function () {
         expect(reloadPage).toHaveBeenCalled();
     });
     it("resets the remainig exam time after the ajax response", function(){
-        this.server.respondWith("GET", "/api/edx_proctoring/v1/proctored_exam/attempt/" + this.proctored_exam_view.model.get('attempt_id'),
+        this.server.respondWith("GET", "/api/edx_proctoring/v1/proctored_exam/attempt/" + this.proctored_exam_view.model.get('attempt_id') + '?sourceid=in_exam',
             [
                 200,
                 {"Content-Type": "application/json"},
@@ -71,7 +71,7 @@ describe('ProctoredExamView', function () {
                 })
             ]
         );
-        this.proctored_exam_view.timerTick = 4; // to make the ajax call.
+        this.proctored_exam_view.timerTick = 29; // to make the ajax call.
         var reloadPage = spyOn(this.proctored_exam_view, 'reloadPage');
         this.proctored_exam_view.updateRemainingTime(this.proctored_exam_view);
         this.server.respond();

edx_proctoring/templates/proctored_exam/instructions.html

@@ -95,7 +95,7 @@
   });
 
   function poll_exam_started() {
-    var url = $('.instructions').data('exam-started-poll-url');
+    var url = $('.instructions').data('exam-started-poll-url') + '?sourceid=instructions';
     $.ajax(url).success(function(data){
       if (data.status === 'ready_to_start') {
         if (_waiting_for_proctored_interval != null) {

edx_proctoring/templates/proctored_exam/waiting_for_app_shutdown.html

@@ -30,7 +30,7 @@
   });
 
   function poll_exam_started() {
-    var url = '{{ exam_started_poll_url }}';
+    var url = '{{ exam_started_poll_url }}' + '?sourceid=app_shutdown';
     $.ajax(url).success(function(data){
       if (data.status === 'submitted') {
         // Do we believe the client proctoring app has shut down

setup.py

@@ -34,7 +34,7 @@ def load_requirements(*requirements_paths):
 
 setup(
     name='edx-proctoring',
-    version='0.12.16',
+    version='0.12.17',
     description='Proctoring subsystem for Open edX',
     long_description=open('README.md').read(),
     author='edX',