https://github.com/cyfdecyf/cow
local
~/.cow/rc
listen = http://127.0.0.1:7777
proxy = cow://aes-128-cfb:proxy1_password@111.222.333.444:5555
nohup cow &
proxy1
listen = cow://aes-128-cfb:proxy1_password@0.0.0.0:5555
proxy = ss://aes-256-cfb:proxy2_password@proxy2_ip_addr:443
nohup cow &
proxy2
run shadowsocks server