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Using the code snippet below:
cj = http.cookiejar.CookieJar()
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor())
urllib.request.install_opener(opener)
request = urllib.request.Request(url, data, headers) # url is https://something
sock = urllib.request.urlopen(request, cafile = 'cacert.pem')
One would expect to establish a verified HTTPS connection to the host and the cookies stored in the cookie jar. Unfortunately urllib.request.urlopen, when called with cafile or capath set, calls urllib.request.build_opener without HTTPCookieProcessor included in the chain. This results in never being able to support cookies in a "verified" HTTPS connection.