NGX_HTTP_OFF_3XX 66 src/http/ngx_http_header_filter_module.c #define NGX_HTTP_OFF_3XX (NGX_HTTP_LAST_2XX - 200) NGX_HTTP_OFF_3XX 306 src/http/ngx_http_special_response.c #define NGX_HTTP_OFF_3XX (NGX_HTTP_LAST_2XX - 201)