NGX_HTTP_IMAGE_BUFFERED  498 src/http/modules/ngx_http_image_filter_module.c     r->connection->buffered |= NGX_HTTP_IMAGE_BUFFERED;
NGX_HTTP_IMAGE_BUFFERED  511 src/http/modules/ngx_http_image_filter_module.c     r->connection->buffered &= ~NGX_HTTP_IMAGE_BUFFERED;