For assigning a wallet in APEX for customised OpenID authentication, one does it via Instance Settings (APEX's internal workspace).
However, I also need to set HTTP proxy access either before the APEX OpenID auth accesses the auth server (preferred), or set it globally for any APEX instance/workspace/app session created (not preferred).
A simple PL/SQL UTL_HTTP.set_proxy(<proxy_url>) call needs to be done - and done around the same processing step at which the APEX runtime sets NLS settings.
Have tried setting the proxy at the pre-auth proc name processing point....
.... but its not called prior to web call made by the runtime's OpenID code:
Comment and suggestions appreciated, thanks.