enlist_unique(rsp->headers, "Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT", 14);
enlist_unique(rsp->headers, "Expires: Thu Jul 31, 1997 07:42:22 pm GMT", 8);
enlist_unique(rsp->headers, "Content-Type: text/html", 13);
enlist_unique(rsp->headers, "Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT", 14);
enlist_unique(rsp->headers, "Expires: Thu Jul 31, 1997 07:42:22 pm GMT", 8);
enlist_unique(rsp->headers, "Content-Type: text/html", 13);