def check(username, password, path="/"):
""" perform two-stage authentication to verify login """
(status,headers,content,errors) = \
raw_interactive(application,path, accept='text/html')
assert status.startswith("401")
challenge = WWW_AUTHENTICATE(headers)
response = AUTHORIZATION(username=username, password=password,
challenge=challenge, path=path)
assert "Digest" in response and username in response
(status,headers,content,errors) = \
raw_interactive(application,path,
HTTP_AUTHORIZATION=response)
if status.startswith("200"):
return content
if status.startswith("401"):
return None
assert False, "Unexpected Status: %s" % status
