Use WSGI

[mgedmin]

standalone.py is a mish-mash of ancient tech. This causes problems:

• asyncore's use of thread instead of threading prevents coverage from working
• asyncore's use of thread instead of threading causes stale thread warnings from zope.testrunner
• use of mechanize (via old zope.testbrowser) prevents Python 3 support

If I made zodbbrowser based on wsgi (using zope.app.wsgi perhaps), served via some wsgi-capable webserver (wsgiref?), I could be using WebTest (either directly or via new zope.testbrowser), avoid coverage troubles, actually avoid threads altogether. I think that's what I should do.

[mgedmin]

In 2017 some things have been fixed:

• zope.testrunner can suppress thread warnings
• zope.testbrowser is now based on WebTest and supports Python 3

These problems remain:

• asyncore's use of thread instead of threading prevents coverage from working
• zope.app.server hasn't been ported to Python 3 (although Waitress is a fork/rewrite of zope.app.server that does support Python 3)

[mgedmin]

All of the items above have been fixed, without actually using WSGI.