Log Message:
nginx-devel: updated to 1.17.3

Changes with nginx 1.17.3

    *) Security: when using HTTP/2 a client might cause excessive memory
       consumption and CPU usage (CVE-2019-9511, CVE-2019-9513,
       CVE-2019-9516).

    *) Bugfix: "zero size buf" alerts might appear in logs when using
       gzipping; the bug had appeared in 1.17.2.

    *) Bugfix: a segmentation fault might occur in a worker process if the
       "resolver" directive was used in SMTP proxy.

Changes with nginx 1.17.2

    *) Change: minimum supported zlib version is 1.2.0.4.
       Thanks to Ilya Leoshkevich.

    *) Change: the $r->internal_redirect() embedded perl method now expects
       escaped URIs.

    *) Feature: it is now possible to switch to a named location using the
       $r->internal_redirect() embedded perl method.

    *) Bugfix: in error handling in embedded perl.

    *) Bugfix: a segmentation fault might occur on start or during
       reconfiguration if hash bucket size larger than 64 kilobytes was used
       in the configuration.

    *) Bugfix: nginx might hog CPU during unbuffered proxying and when
       proxying WebSocket connections if the select, poll, or /dev/poll
       methods were used.

    *) Bugfix: in the ngx_http_xslt_filter_module.

    *) Bugfix: in the ngx_http_ssi_filter_module.

Changes with nginx 1.17.1

    *) Feature: the "limit_req_dry_run" directive.

    *) Feature: when using the "hash" directive inside the \ 
"upstream" block
       an empty hash key now triggers round-robin balancing.
       Thanks to Niklas Keller.

    *) Bugfix: a segmentation fault might occur in a worker process if
       caching was used along with the "image_filter" directive, and errors
       with code 415 were redirected with the "error_page" directive; the
       bug had appeared in 1.11.10.

    *) Bugfix: a segmentation fault might occur in a worker process if
       embedded perl was used; the bug had appeared in 1.7.3.