mod_http_oauth2: Validate redirect URI depending on application type Per https://openid.net/specs/openid-connect-registration-1_0.html require that web applications use https:// and native applications must use either http://localhost or a custom (non-https) URI. Previous requirement that hostname matches that of client_uri is kept for web applications.

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summary: Log a message once per minute
...

This module sends `-- MARK --` to the log once per minute. This may be
useful to give a sense of how busy the server is or see that logging and
timers are still working.