2014/10/07 09:30:58 [error] 10661#0: *1 SSL_do_handshake() failed (SSL: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol) while SSL handshaking to upstream, client: 127.0.0.1, server: 0.0.0.0, request: "GET / HTTP/1.1", upstream: "https://xx.xx.xx.xx:80/", host: "localhost"