Fix reponse already sent error

app/doorboy-proxy.py

@@ -60,11 +60,11 @@ async def view_doorboy_uids(request):
 
 @app.route("/longpoll", stream=True)
 async def view_longpoll(request):
-    response = await request.respond(content_type="text/event-stream")
     key = request.headers.get("KEY")
     if not key or key not in [DOORBOY_SECRET_FLOOR, DOORBOY_SECRET_WORKSHOP]:
         return text("Invalid token")
 
+    response = await request.respond(content_type="text/event-stream")
     await response.send("data: response-generator-started\n\n")
     pipeline = [
         {
@@ -80,7 +80,9 @@ async def view_longpoll(request):
                 if event["fullDocument"].get("type") == "open-door":
                     await response.send("data: %s\n\n" %
                                         event["fullDocument"]["door"])
-    except pymongo.errors.PyMongoError:
+    except pymongo.errors.PyMongoError as e:
+        print(e)
+        await response.send("data: response-generator-ended\n\n")
         return