fix

scripts/lib/upt.lua

@@ -14,7 +14,7 @@ function _M.upt(uri)
     local sign = ngx.md5(secret .. '&' .. etime .. '&' .. uri)
     ngx.log(ngx.ERR, 'sign...' .. sign .. ' etime..' .. etime)
     local upt = string.sub(sign, 13, 13 + 7) .. etime
-    ngx.say(upt)
+    return (upt)
 end
 
 return _M

scripts/upt.lua

@@ -1,4 +1,4 @@
 package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
-local upt = require("lib.upt")
+local Upt = require("lib.upt")
 local uri = ngx.unescape_uri(ngx.var.arg_uri)
-upt.upt(uri)
+Upt.upt(uri)