NGX_HTTP_OFF_4XX   79 src/http/ngx_http_header_filter_module.c #define NGX_HTTP_OFF_4XX   (NGX_HTTP_LAST_3XX - 301 + NGX_HTTP_OFF_3XX)
NGX_HTTP_OFF_4XX  318 src/http/ngx_http_special_response.c #define NGX_HTTP_OFF_4XX   (NGX_HTTP_LAST_3XX - 301 + NGX_HTTP_OFF_3XX)