In webapp2 documentation there is no mention of setting the SameSite
attribute for a cookie, it seems to be built on the response handler from WebOB, I checked webOB doc page it clearly shows the 'SameSite' flag as an accepted cookie parameter
I tried to set it nonetheless in set cookie:
self.response.set_cookie(name, secure_cookie, path='/', secure=True,
httponly=True, samesite='lax', expires=expireDate)
But I received the below error:
TypeError: set_cookie() got an unexpected keyword argument 'samesite'
I know one can use self.response.headers.add_header('Set-Cookie', ...
but I was hoping I could use self.response.set_cookie
following the webapp2 documentation
Samesite
was introduced in webob 1.8 but The App Engine Standard Environment SDK ships with 1.1.1 and 1.2.3 as built-in libraries.
You could try vendoring in a more recent webob
to see if this overrides the built-in version.
Once a version of webob
that supports samesite
is installed, a samesite
keyword argument can be passed to Response.set_cookie
class MyHandler(webapp2.RequestHandler):
def get(self):
self.response.set_cookie('cookie-name', value='42', samesite='lax')
This sample app sets samesite=strict
on the session cookie generated by webapp2_extras.sessions
, assuming the underlying webob package supports it.
import webapp2
from webapp2_extras import sessions
class HelloHandler(webapp2.RequestHandler):
def dispatch(self):
self.session_store = sessions.get_store(request=self.request)
try:
super(HelloHandler, self).dispatch()
finally:
self.session_store.save_sessions(self.response)
@webapp2.cached_property
def session(self):
return self.session_store.get_session()
def get(self):
self.session['hello'] = 'world'
self.response.headers['content-type'] = 'text/plain'
self.response.write('Hello world')
webapp2_config = {
'webapp2_extras.sessions': {
'secret_key': 's3cr3t',
'cookie_args':{'samesite': 'strict'}
},
}
application = webapp2.WSGIApplication([
webapp2.Route(r'/', handler=HelloHandler),
],
config=webapp2_config)
The response's set-cookie
header is
session=eyJoZWxsbyI6IndvcmxkIn0=|1595151290|09b22484901689e6eb0411792c8732ef134d2b66; Path=/; SameSite=strict