Changes with nginx 1.15.0 05 Jun 2018
*) Change: the "ssl" directive is deprecated; the "ssl" parameter of the
"listen" directive should be used instead.
*) Change: now nginx detects missing SSL certificates during
configuration testing when using the "ssl" parameter of the "listen"
*) Feature: now the stream module can handle multiple incoming UDP
datagrams from a client within a single session.
*) Bugfix: it was possible to specify an incorrect response code in the
*) Bugfix: nginx could not be built by gcc 8.1.
*) Bugfix: logging to syslog stopped on local IP address changes.
*) Bugfix: nginx could not be built by clang with CUDA SDK installed;
the bug had appeared in 1.13.8.
*) Bugfix: "getsockopt(TCP_FASTOPEN) ... failed" messages might appear
in logs during binary upgrade when using unix domain listen sockets
*) Bugfix: nginx could not be built on Fedora 28 Linux.
*) Bugfix: request processing rate might exceed configured rate when
using the "limit_req" directive.
*) Bugfix: in handling of client addresses when using unix domain listen
sockets to work with datagrams on Linux.
*) Bugfix: in memory allocation error handling.