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. fixes a double-lock on non-Linux platforms when using "MHD_create_response_from_fd".
2. Additional response creation calls were added in this release, enabling the use... of "sendfile" with an offset.
3. A call to "strndup" was removed to make the code build on Mac OS X and similar systems.