pkg/provider/keycloak/example/redirect.html (13 lines of code) (raw):
<HTML>
<HEAD>
<TITLE>Kerberos Unsupported</TITLE>
</HEAD>
<BODY Onload="document.forms[0].submit()">
<FORM METHOD="POST" ACTION="https://id.example.com/auth/realms/master/login-actions/authenticate?code=G5PSj-AJ7mC2wRS5yOA5NEGZ7BO97Y0_qUkS5zInmhQ&execution=e0c4f6fe-6f9a-435e-a7ff-d61eb2456d58&client_id=urn%3Aalibaba%3Acloudcomputing">
<NOSCRIPT>
<P>JavaScript is disabled. We strongly recommend to enable it. You were unable to login via Kerberos. Click the button below to login via an alternative method .</P>
<INPUT name="continue" TYPE="SUBMIT" VALUE="CONTINUE" />
</NOSCRIPT>
</FORM>
</BODY>
</HTML>