Justin, After mucking around a bit with what you suggested, this seemed like the straightforward thing to do. Not sure how things would work on internal redirects etc. Can you please have a look. I'm sure it's naive, but so am I (for now :-)
Bojan
--- httpd-2.0-vanilla/server/protocol.c Fri Sep 6 16:01:19 2002 +++ httpd-2.0/server/protocol.c Wed Sep 18 07:32:37 2002 @@ -895,6 +895,15 @@ r->connection = conn; r->server = conn->base_server; + /* Update the request in connection filters */ + f = conn->input_filters; + for (; f; f = f->next) + f->r = r; + + f = conn->output_filters; + for (; f; f = f->next) + f->r = r; + r->user = NULL; r->ap_auth_type = NULL;