nginx配置https(免费证书)
http://blog.youkuaiyun.com/frankenjoy123/article/details/76187270
nginx-1.12.1 + openssl-1.1.0f 静态编译
http://blog.youkuaiyun.com/andylau00j/article/details/75125601
nginx双证书配置
http://blog.youkuaiyun.com/andylau00j/article/details/75633366