0.38 - Websockets error: object has no attribute 'drain'

[christopherbruce]

Home Assistant release (hass --version):
0.38

Python release (python3 --version):
3.4.2

Component/platform:

• http
• websocket_api

Description of problem:
When I try to access the frontend, I enter my password and see a "Loading Data" screen that doesn't load anything. I just updated to 0.38 and was able to access once, but after a restart I haven't been able to get back in. Configuration shows no errors, home-assistant.log shows the error below repeating every second.

Expected:
Should be able to access frontend, should not receive websockets error.

Problem-relevant configuration.yaml entries and steps to reproduce:

1. Install 0.38 update
2. Restart system
3. Attempt login to frontend

Traceback (if applicable):

17-02-11 20:55:12 ERROR (MainThread) [homeassistant.components.websocket_api] Unexpected error inside websocket API. {'type': 'get_states', 'id': 3}
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/components/websocket_api.py", line 282, in handle
    getattr(self, handler_name)(msg)
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/components/websocket_api.py", line 398, in handle_get_states
    self.hass.states.async_all()))
  File "/srv/homeassistant/lib/python3.4/site-packages/homeassistant/components/websocket_api.py", line 220, in send_message
    self.wsock.send_json(message, dumps=JSON_DUMP)
  File "/home/homeassistant/.homeassistant/deps/aiohttp/web_ws.py", line 205, in send_json
    return self.send_str(dumps(data))
  File "/home/homeassistant/.homeassistant/deps/aiohttp/web_ws.py", line 194, in send_str
    return self._writer.send(data, binary=False)
  File "/home/homeassistant/.homeassistant/deps/aiohttp/_ws_impl.py", line 377, in send
    return self._send_frame(message, WSMsgType.TEXT)
  File "/home/homeassistant/.homeassistant/deps/aiohttp/_ws_impl.py", line 354, in _send_frame
    return self.writer.drain()
AttributeError: '_SelectorSocketTransport' object has no attribute 'drain'

Additional info:

Some errors in the Chrome console:

Uncaught (in promise) undefined
(anonymous) @ core-adfeb51….js:1
(index):1 Uncaught (in promise) Objecterror: Objectcode: 3message: "Connection lost"__proto__: Objectsuccess: falsetype: "result"__proto__: Object
core-adfeb51….js:1 Uncaught (in promise) DOMException: Only secure origins are allowed (see: https://goo.gl/Y0ZkNV).
(anonymous) @ core-adfeb51….js:1
inject.js:56 Capturing clicks
shared.js:213 GET https://api.fixer.io/latest?base=USD&symbols=GBP,EUR,JPY 403 (Forbidden)
fetchJSONFile @ shared.js:213
(anonymous) @ shared.js:175
target.(anonymous function) @ extensions::SafeBuiltins:19
safeCallbackApply @ VM1839 extensions::sendRequest:21
handleResponse @ VM1839 extensions::sendRequest:74

[balloob]

Please remove your <config>/deps folder and try again.

[balloob]

Sorry, correction: remove <config>/deps/aiohttp* (any folder that starts with aiohttp)

[christopherbruce]

That did it, thanks Paulus. Is this clearing the deps always required when updating?

[balloob]

It's related to a bug that we already had but is sadly being discovered in 0.38. We're working on a fix.

[balloob]

0.38.1 should be out shortly with a temporary fix for this issue.

[brianjking]

@balloob No need to delete the /deps/aiohttp* once 0.38.1 is released?

[brianjking]

@balloob -- Even after upgrading to 0.38.1 I'm seeing this:

https://gist.github.com/brianjking/85eeffb30e6423742e719bb83f45b63e

[balloob]

@brianjking are you using a server like nginx in between?

[brianjking]

@balloob Yes, I'm using this NGINX setup.

My configuration files are here.

[balloob]

You have not correctly setup your NGINX to forward websocket connections. See https://home-assistant.io/ecosystem/nginx/

[brianjking]

The nginx setup I am using works fine prior to 0.38/0.38.1. What changed on the nginx page you posted to work with websockets?

…

On Feb 12, 2017 14:39, "Paulus Schoutsen" ***@***.***> wrote: You have not correctly setup your NGINX to forward websocket connections. See https://home-assistant.io/ecosystem/nginx/ — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#5887 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGePAUdC54Q7kbpNYDDQhmaD9XHJ7Nnoks5rb24SgaJpZM4L-XZE> .

[balloob]

The difference in 0.38 is that we do everything through the websocket instead of falling back to event stream and Rest API. Your setup probably has been broken for a while.