Update wsgi.py

[isaac2077]

eventlet/eventlet#544

[VincentK-Titandc]

Hello,
Thanks for the fix, this is a critical issue since eventlet 0.30.3+ actually broke compatibility with old API!
However, this proposal is not retro compatible with older eventlet versions, I suggested some modifications for this purpose.
BR.

[VincentK-Titandc]

We should instead take a similar approach than the fix pushed in gunicorn project here. Here is an example:

EVENTLET_WSGI_LOCAL = getattr(eventlet.wsgi, "WSGI_LOCAL", None)
EVENTLET_ALREADY_HANDLED = getattr(eventlet.wsgi, "ALREADY_HANDLED", None)
...
if getattr(EVENTLET_WSGI_LOCAL, "already_handled", None):
    _ALREADY_HANDLED = getattr(EVENTLET_WSGI_LOCAL, "already_handled", False)
else:
    _ALREADY_HANDLED = EVENTLET_ALREADY_HANDLED

[sanmusen214]

Your comment help a lot, thank you👍

[VincentK-Titandc]

Hi all, @anarkiwi,
Is ryu's development dead at this point? did everyone just switched to FAUCET?
It would be nice if someone can clarify a bit, I mean I won't spent more time trying to solve issues if the project is dead.
Thanks.

[anarkiwi]

I apologize for the lack of updates. I'll update Ryu's README shortly. Our team has not had the resources to fully maintain Ryu, so FAUCET has moved to os-ken. We are currently looking for assistance to help support Ryu.