diff --git a/libsrc/Wi/http.c b/libsrc/Wi/http.c
index 802032ee56..b2ee9dac75 100644
--- a/libsrc/Wi/http.c
+++ b/libsrc/Wi/http.c
@@ -8118,6 +8118,8 @@ bif_http_map_table (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args)
 		    }
 		  map->hm_cors = ht;
 		}
+	      else if (DV_STRINGP (opts[i]) && !stricmp (opts[i],"expiration_function"))
+		map->hm_expiration_fn = box_copy_tree (opts[i+1]);
 	    }
 	  map->hm_opts = (caddr_t *) box_copy_tree ((box_t) opts);
 	}
@@ -8931,6 +8933,8 @@ bif_http_map_get (caddr_t *qst, caddr_t * err_ret, state_slot_t **args)
     res = box_num (map->hm_url_rewrite_keep_lpath);
   else if (!strcmp (member, "noinherit"))
     res = box_num (map->hm_no_inherit);
+  else if (!strcmp (member, "expiration_function"))
+    res = box_copy_tree ((box_t) map->hm_expiration_fn);
   return res;
 }
 
diff --git a/libsrc/Wi/http.h b/libsrc/Wi/http.h
index 68eb6e31b5..a281dc37c5 100644
--- a/libsrc/Wi/http.h
+++ b/libsrc/Wi/http.h
@@ -80,6 +80,7 @@ typedef struct ws_http_map_s
     int		hm_url_rewrite_keep_lpath;
     id_hash_t *	hm_cors;
     int 	hm_cors_restricted;
+    caddr_t     hm_expiration_fn;
   } ws_http_map_t;
 #endif
 
diff --git a/libsrc/Wi/url_rewrite.sql b/libsrc/Wi/url_rewrite.sql
index a3b10d06bb..9c6477326e 100644
--- a/libsrc/Wi/url_rewrite.sql
+++ b/libsrc/Wi/url_rewrite.sql
@@ -1210,7 +1210,7 @@ create procedure DB.DBA.HTTP_URLREWRITE (in path varchar, in rule_list varchar,
   declare rule_iri, in_path, qstr, meth varchar;
   declare target_vhost_pkey, hf, accept, http_headers any;
   declare result, http_redir, http_tcn_code, tcn_rc, keep_lpath int;
-  declare http_tcn_headers varchar;
+  declare http_tcn_headers, exp_fn varchar;
 
   -- XXX: the path is just path string, no fragment no query no host
   --hf := rfc1808_parse_uri (path);
@@ -1220,12 +1220,14 @@ create procedure DB.DBA.HTTP_URLREWRITE (in path varchar, in rule_list varchar,
     in_path := '/';
   accept := null;
   qstr := null;
+  exp_fn := null;
   keep_lpath := 0;
   meth := 'GET';
 
   if (is_http_ctx ())
     {
       keep_lpath := http_map_get ('url_rewrite_keep_lpath');
+      exp_fn := http_map_get ('expiration_function');
       lines := http_request_header ();
       if (length (lines))
 	{
@@ -1245,6 +1247,12 @@ create procedure DB.DBA.HTTP_URLREWRITE (in path varchar, in rule_list varchar,
       lines := vector ();
     }
 
+  if (isstring (exp_fn) and (__proc_exists (exp_fn) is not null) and (1 = call (exp_fn) (lines, http_map_get ('options'))))
+    {
+      http_body_read ();
+      return 1;
+    }
+
   if (length (qstr))
     in_path := in_path || '?' || qstr;