GNU libmicrohttpd 是一个小型的嵌入式 HTTP 服务器 的 C 类库，支持 HTTP 1.1 可以同时侦听多个端口。
1. This release adds the use of an external GnuTLS library (instead of the internal "fork"), which works much better and with all threading modes.
2. The code also now allows passing... of the listen socket by applications to support the creation of servers that work well with systemd, and can use "sendfile" for faster transmission of responses from disk on GNU/Linux.
3. IPv6 sockets now only bind to IPv6 addresses (not to both IPv4 and IPv6) if the platform allows setting the respective socket option