add

@@ -2,10 +2,16 @@ require "resty.core"
 
 local cjson = require "cjson"
 local http_request = require "http_request"
+local iptool=require "iptool" 
 
 
 local default_err_code=9999991
 local default_err_msg="系统正忙,请稍后重试!"
+
+  -- read config
+local common_config=lua_context.configs["common_conf"]
+local limit_config=lua_context.configs["api_rate_limit_conf"]
+local limit_ip_config=lua_context.configs["limit_ip_access"]
   
 --- do limit using local cache
 function limit(limit_key,max_limit,seconds)
@@ -32,11 +38,6 @@ end
 -------- function: doing rate limit -----
 function rate_limit()
 
-  -- read config
-  local common_config=lua_context.configs["common_conf"]
-  local limit_config=lua_context.configs["api_rate_limit_conf"]
-  local limit_ip_config=lua_context.configs["limit_ip_access"]
-
   if (not common_config) or (not limit_config) then
     return
   end