Currently, we can't store anything from the client into the Flask session. Here is a traceback of the issue when trying to use it:
Traceback (most recent call last):
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/eventlet/wsgi.py", line 454, in handle_one_response
result = self.application(self.environ, start_response)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/engineio/middleware.py", line 32, in __call__
return self.engineio_app.handle_request(environ, start_response)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/socketio/server.py", line 253, in handle_request
return self.eio.handle_request(environ, start_response)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/engineio/server.py", line 186, in handle_request
socket.handle_post_request(environ)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/engineio/socket.py", line 80, in handle_post_request
self.receive(pkt)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/engineio/socket.py", line 42, in receive
self.server._trigger_event('message', self.sid, pkt.data)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/engineio/server.py", line 240, in _trigger_event
return self.handlers[event](*args)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/socketio/server.py", line 394, in _handle_eio_message
self._handle_connect(sid, pkt.namespace)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/socketio/server.py", line 284, in _handle_connect
self.environ[sid]) is False:
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/socketio/server.py", line 345, in _trigger_event
return self.handlers[namespace][event](*args)
File "/home/tito/code/ninchanese-app/ninchanese/views/stream.py", line 40, in io_connect
user_id = session.get("user_id")
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/werkzeug/local.py", line 338, in __getattr__
return getattr(self._get_current_object(), name)
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/werkzeug/local.py", line 297, in _get_current_object
return self.__local()
File "/home/tito/.virtualenvs/new-socketio/local/lib/python2.7/site-packages/flask/globals.py", line 20, in _lookup_req_object
raise RuntimeError('working outside of request context')
RuntimeError: working outside of request context