http://www.jb51.net/article/30317.htm
import socket
import ssl
sock = ssl.wrap_socket(socket.socket())
sock.connect(('passport.baidu.com', 443))
http://www.ruanyifeng.com/blog/2014/09/ssl-latency.html
HTTP耗時(shí) = TCP握手
HTTPs耗時(shí) = TCP握手 + SSL握手