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Third-party sessions/cookies breaking because of browser upgrades #94

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@jrwdunham

As of Feb/Mar 2020, modern browsers are not allowing third-party cookies unless they have secure=True and samesite=None. Thus OLDs are breaking: users can login but no subsequent requests work, because those subsequent requests cannot send cookies. In this OLD, the fix should be in env-old/lib/python2.7/site-packages/onlinelinguisticdatabase/config/middleware.py:

app = SessionMiddleware(
    app,
    config,
    samesite='None',
    secure=True)

Beaker also needs to be updated to 1.10.0. See https://beaker.readthedocs.io/en/latest/changes.html. Use something like:

./env-old/bin/pip2.7 install beaker==1.10.0

To reproduce the error on a Chrome browser that is not currently exhibiting it, navigate to chrome://flags/, and search for samesite. Then set the following two settings to Enabled: SameSite by default cookies and Cookies without SameSite must be secure.

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