Changes with nginx 1.11.13 04 Apr 2017 *) Feature: the "http_429" parameter of the "proxy_next_upstream", "fastcgi_next_upstream", "scgi_next_upstream", and "uwsgi_next_upstream" directives. Thanks to Piotr Sikora. *) Bugfix: in memory allocation error handling. *) Bugfix: requests might hang when using the "sendfile" and "timer_resolution" directives on Linux. *) Bugfix: requests might hang when using the "sendfile" and "aio_write" directives with subrequests. *) Bugfix: in the ngx_http_v2_module. Thanks to Piotr Sikora. *) Bugfix: a segmentation fault might occur in a worker process when using HTTP/2. *) Bugfix: requests might hang when using the "limit_rate", "sendfile_max_chunk", "limit_req" directives, or the $r->sleep() embedded perl method with subrequests. *) Bugfix: in the ngx_http_slice_module. -- Maxim Dounin http://nginx.org/