Add a generate_204 method to our backend for the desktop app

(imported from commit 3fa61b7e09884c83a27740087abba25dbcd8a9cb)

zerver/views/__init__.py

@@ -4,7 +4,7 @@ from django.conf import settings
 from django.contrib.auth import authenticate, login
 from django.contrib.auth.decorators import login_required
 from django.core.urlresolvers import reverse
-from django.http import HttpResponseRedirect, HttpResponseForbidden
+from django.http import HttpResponseRedirect, HttpResponseForbidden, HttpResponse
 from django.shortcuts import render_to_response, redirect
 from django.template import RequestContext, loader
 from django.utils.timezone import now
@@ -2179,3 +2179,6 @@ def remove_apns_device_token(request, user_profile, token=REQ):
         return json_error("APNS token does not exist")
 
     return json_success()
+
+def generate_204(request):
+    return HttpResponse(content=None, status=204)

zproject/urls.py

@@ -211,6 +211,9 @@ v1_api_and_json_patterns = patterns('zerver.views',
     url(r'^register$', 'rest_dispatch',
             {'POST': 'api_events_register'}),
 
+    # Returns a 204, used by desktop app to verify connectivity status
+    url(r'generate_204$', 'generate_204'),
+
 ) + patterns('zerver.tornadoviews',
     url(r'^events$', 'rest_dispatch',
         {'GET': 'get_events_backend'}),