Edited Issue: websocket client test disable_sni fails with websocketpp 0.6.0 [393]

as in the title,

/casablanca/Release/tests/functional/websockets/client/authentication_tests.cpp:181: error: Failure in disable_sni: Unhandled exception: set_fail_handler: 20: Invalid HTTP status. FAILED
Test case authentication_tests:disable_sni FAILED

do you have any clue?
thanks!