Nginx 1.9.12 发布了，改进内容：
*) Feature: Huffman encoding of response headers in HTTP/2.
Thanks to Vlad Krasnov.
*) Feature: the “worker_cpu_affinity” directive now supports more than
*) Bugfix: compatibility with 3rd party C++ modules; the bug had
appeared in 1.9.11.
Thanks to Piotr Sikora.
*) Bugfix: nginx could not be built statically with OpenSSL on Linux;
the bug had appeared in 1.9.11.
*) Bugfix: the “add_header … always” directive with an empty value did
not delete “Last-Modified” and “ETag” header lines from error
*) Workaround: “called a function you should not call” and “shutdown
while in init” messages might appear in logs when using OpenSSL
*) Bugfix: invalid headers might be logged incorrectly.
*) Bugfix: socket leak when using HTTP/2.
*) Bugfix: in the ngx_http_v2_module.