Changes with nginx 1.23.1 19 Jul 2022 *) Feature: memory usage optimization in configurations with SSL proxying. 优化在ssl proxy代理的时候内存选项 *) Feature: looking up of IPv4 addresses while resolving now can be disabled with the "ipv4=off" parameter of the "resolver" directive. ipv4 增加了 off选项参数 *) Change: the logging level of the "bad key share", "bad extension", "bad cipher", and "bad ecpoint" SSL errors has been lowered from "crit" to "info". 修改了log 从crit 到info 等级 以下是bug 修复 *) Bugfix: while returning byte ranges nginx did not remove the "Content-Range" header line if it was present in the original backend response. *) Bugfix: a proxied response might be truncated during reconfiguration on Linux; the bug had appeared in 1.17.5.