request_output   2057 http/modules/ngx_http_ssi_filter_module.c     if (rc == NGX_ERROR || r->connection->error || r->request_output) {
request_output    132 http/ngx_http_copy_filter_module.c             r->request_output = 1;
request_output    504 http/ngx_http_request.h     unsigned                          request_output:1;