In order to pass the username along to a fastcgi application (trac), I had to set a value for remote user explicitly like so as a workaround: ``` if ($http_authorization ~ username="([^\"]+)") { set $htdigest_user $1; } fastcgi_param AUTH_USER $htdigest_user; fastcgi_param REMOTE_USER $htdigest_user; ``` Would be better if $remote_user was already set up correctly like it is with auth_basic.