Function ap_set_last_modified

server/protocol.c:2280–2289

* This function sets the Last-Modified output header field to the value * of the mtime field in the request structure - rationalized to keep it from * being in the future. */

 * being in the future.
 */
AP_DECLARE(void) ap_set_last_modified(request_rec *r)
{
    if (!r->assbackwards) {
        apr_time_t mod_time = ap_rationalize_mtime(r, r->mtime);
        char *datestr = apr_palloc(r->pool, APR_RFC822_DATE_LEN);

        apr_rfc822_date(datestr, mod_time);
        apr_table_setn(r->headers_out, "Last-Modified", datestr);
    }
}

typedef struct hdr_ptr {
    ap_filter_t *f;