cat << EOF >> /etc/sysctl.conf
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
EOF

sysctl -p
apt update
apt install -y shadowsocks
cat <<EOF >/etc/shadowsocks/config.json
{
    "server":"::",
    "server_port":8443,
    "local_address": "127.0.0.1",
    "local_port":1080,
    "password":"chengxuncc",
    "timeout":300,
    "method":"aes-256-cfb",
    "fast_open": false,
    "workers": 5,
    "prefer_ipv6": false
}
EOF

systemctl stop shadowsocks
systemctl restart shadowsocks
systemctl enable shadowsocks
systemctl status shadowsocks
systemctl start shadowsocks