[GitHub] [apisix] nanamikon edited a comment on issue #3528: request help: Why ip-restriction return json instead of default 403 error page

[GitBox <gi...@apache.org>]

nanamikon edited a comment on issue #3528:
URL: https://github.com/apache/apisix/issues/3528#issuecomment-774942415


   Refer to apisix/core/response.lua,   resp_exit will be called when response exit,  I think it is a global handle for response exit, we can't use plugin extension here。  What about redirecting to a new uri to do the actual work ？
   
   Add method 
   ```
   function _M.register_exit_handle_uri(uri){
          handle_uri = uri
   }
   ```
   
   Modify apisix/core/response.lua
   Add exec to redirect to error handle
   ```
       if handle_uri then
           ngx.exec(handle_uri, {code=xxx, body=yyy});
       else
           if idx > 0 then
             ngx_print(concat_tab(t, "", 1, idx))
           end
       
           if code then
               return ngx_exit(code)
           end   
       end
   
   ```
   
   
   Add new config to change this behavior
   ```
   apisix:
         exit_handle_uri:"/error_handle"
        
   ```
   
   New uri for error handle，added by http_server_configuration_snippet 
   ```
       location = /error_handle {
         content_by_lua '
           local args = ngx.req.get_uri_args()
           ngx.print(args.body)
           return ngx.exit(args.code)
         ';
       }
   ```
   
   


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