picoweb - OSError: [Errno 11] EAGAIN

[mattzz]

Hi,

I'm not exactly sure where to post this or where to file an issue - It seems to be connected to uasyncio and/or picoweb.

I'm working on a micropython/picoweb application that is running on an esp8266 based smart socket.
After having switched to pfalcon's forks of micropython and micropython-lib I'm getting an OSError as soon as I start the the picoweb app.

Code: Select all

* Running on http://0.0.0.0:80/
Traceback (most recent call last):
  File "main.py", line 1, in <module>
  File "obi_socket/__init__.py", line 31, in <module>
  File "picoweb/__init__.py", line 298, in run
  File "uasyncio/core.py", line 155, in run_forever
  File "uasyncio/core.py", line 110, in run_forever
  File "uasyncio/__init__.py", line 251, in start_server
OSError: [Errno 11] EAGAIN
MicroPython v1.9.3-1420-gfe98742-dirty on 2018-12-02; ESP module with ESP8266

(full code is here)

I'm pretty sure this is not related to my code because also this minimalistic test of picoweb fails:

Code: Select all

MicroPython v1.9.3-1420-gfe98742-dirty on 2018-12-02; ESP module with ESP8266
Type "help()" for more information.
>>>
>>>
paste mode; Ctrl-C to cancel, Ctrl-D to finish
=== import picoweb
===
=== app = picoweb.WebApp(__name__)
===
=== @app.route("/")
=== def index(req, resp):
===     yield from picoweb.start_response(resp)
===     yield from resp.awrite("How you doin'?")
===
=== app.run(debug=True)
===
* Running on http://127.0.0.1:8081/
Traceback (most recent call last):
  File "<stdin>", line 10, in <module>
  File "picoweb/__init__.py", line 298, in run
  File "uasyncio/core.py", line 155, in run_forever
  File "uasyncio/core.py", line 110, in run_forever
  File "uasyncio/__init__.py", line 251, in start_server
OSError: [Errno 11] EAGAIN
>>>

File "uasyncio/__init__.py", line 251:

Code: Select all

   s2, client_addr = s.accept()

Any ideas why the socket is not available? Am I missing something?


Edit: The problem persists using micropython/micropython and pfalcon/micropython-lib so it points towards pfalcon/micropython-lib

[pfalcon]

So, this doesn't provide enough info to decide what may be wrong. Especially unclear:

The problem persists using micropython/micropython and pfalcon/micropython-lib so it points towards pfalcon/micropython-lib

Why does it point to that?

Anyway, are you aware of https://github.com/micropython/micropython/pull/4322 ?

Put my branch aside for now, test the latest mainline, then if problem is there, revert that patch and test again. And if outcomes differ, report to that PR.

[mattzz]

Bingo.
Reverting commit 4737ff8054e84b3ccd1e7364d773a8c1d14095f5 did the trick.
(Using micropython/micropython and pfalcon/micropython-lib --- picoweb depends on ulogging which is part of pfalcon/micropython-lib)

Thanks for pointing me to https://github.com/micropython/micropython/pull/4322

I see your point that I jumped a bit early to the conclusion that the issue pointed to micropython-lib.
And again - Thank you for taking your time to reply. I will report to the PR.