Fix nginx closing WebSocket connection after 60 seconds (#370)

* Test

* Add keepalive

* Revert "Add keepalive"

This reverts commit 8b92198122.

* Update dashboard.py

* Revert

* Lint

esphomeyaml/api/client.py

@@ -429,6 +429,8 @@ def run_logs(config, address):
     stopping = False
     retry_timer = []
 
+    has_connects = []
+
     def try_connect(tries=0, is_disconnect=True):
         if stopping:
             return
@@ -451,8 +453,13 @@ def run_logs(config, address):
             return
 
         wait_time = min(2**tries, 300)
-        _LOGGER.warning(u"Couldn't connect to API (%s). Trying to reconnect in %s seconds",
-                        error, wait_time)
+        if not has_connects:
+            _LOGGER.warning(u"Initial connection failed. The ESP might not be connected"
+                            u"to WiFi yet (%s). Re-Trying in %s seconds",
+                            error, wait_time)
+        else:
+            _LOGGER.warning(u"Couldn't connect to API (%s). Trying to reconnect in %s seconds",
+                            error, wait_time)
         timer = threading.Timer(wait_time, functools.partial(try_connect, tries + 1, is_disconnect))
         timer.start()
         retry_timer.append(timer)
@@ -465,8 +472,6 @@ def run_logs(config, address):
                                   'TCP buffer - This is only cosmetic)')
         safe_print(time_ + text)
 
-    has_connects = []
-
     def on_login():
         try:
             cli.subscribe_logs(on_log, dump_config=not has_connects)

esphomeyaml/dashboard/dashboard.py

@@ -511,6 +511,12 @@ def make_app(debug=False):
                 self.set_header('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0')
 
     static_path = os.path.join(os.path.dirname(__file__), 'static')
+    settings = {
+        'debug': debug,
+        'cookie_secret': COOKIE_SECRET,
+        'log_function': log_function,
+        'websocket_ping_interval': 30.0,
+    }
     app = tornado.web.Application([
         (r"/", MainRequestHandler),
         (r"/login", LoginHandler),
@@ -527,7 +533,7 @@ def make_app(debug=False):
         (r"/ping", PingRequestHandler),
         (r"/wizard.html", WizardRequestHandler),
         (r'/static/(.*)', StaticFileHandler, {'path': static_path}),
-    ], debug=debug, cookie_secret=COOKIE_SECRET, log_function=log_function)
+    ], **settings)
 
     if debug:
         _STATIC_FILE_HASHES.clear()

esphomeyaml/dashboard/templates/index.html

@@ -409,7 +409,7 @@
     </div>
   </div>
   <div class="modal-footer">
-    <a class="modal-close waves-effect waves-green btn-flat stop-logs">Stop</a>
+    <a class="modal-close waves-effect waves-green btn-flat stop-logs">Close</a>
   </div>
 </div>