NGX_HTTP_OFF_4XX  109 src/http/ngx_http_header_filter_module.c #define NGX_HTTP_OFF_5XX   (NGX_HTTP_LAST_4XX - 400 + NGX_HTTP_OFF_4XX)
NGX_HTTP_OFF_4XX  251 src/http/ngx_http_header_filter_module.c                             + NGX_HTTP_OFF_4XX;
NGX_HTTP_OFF_4XX  339 src/http/ngx_http_special_response.c #define NGX_HTTP_OFF_5XX   (NGX_HTTP_LAST_4XX - 400 + NGX_HTTP_OFF_4XX)
NGX_HTTP_OFF_4XX  453 src/http/ngx_http_special_response.c         err = error - NGX_HTTP_BAD_REQUEST + NGX_HTTP_OFF_4XX;
NGX_HTTP_OFF_4XX  638 src/http/ngx_http_special_response.c             && err >= NGX_HTTP_OFF_4XX)