uhttpd lua mod

root@OpenWrt:~# opkg install uhttpd-mod-lua
Installing uhttpd-mod-lua (18) to root...
Downloading http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/uhttpd-mod-lua_18_ar71xx.ipk.
Configuring uhttpd-mod-lua.
root@OpenWrt:~# uci set uhttpd.main.lua_prefix=/lua
root@OpenWrt:~# uci set uhttpd.main.lua_handler=/root/test.lua
root@OpenWrt:~# cat /root/test.lua
function handle_request(env)
        uhttpd.send("HTTP/1.0 200 OK\r\n")
        uhttpd.send("Content-Type: text/plain\r\n\r\n")
        uhttpd.send("Hello world.\n")
end
root@OpenWrt:~# /etc/init.d/uhttpd restart
root@OpenWrt:~# wget -qO- http://127.0.0.1/lua/
Hello world.
root@OpenWrt:~#