--- a/net/http/server.lua	Tue Jan 12 23:48:16 2016 +0100
+++ b/net/http/server.lua	Sat Jan 16 22:43:11 2016 +0100
@@ -294,7 +294,7 @@
 end
 
 function _M.listen_on(port, interface, ssl)
-	addserver(interface or "*", port, listener, "*a", ssl);
+	return addserver(interface or "*", port, listener, "*a", ssl);
 end
 function _M.add_host(host)
 	hosts[host] = true;