Google Scholar blocked most of DigitalOcean VPS IP(IPv4), so you should use IPv6 to access Google Scholar instead.
via: https://github.com/shadowsocks/shadowsocks-libev/issues/113
Here is my solution
make sure your vps has right ipv6 access
OS: Ubuntu 16.04.3 LTS (GNU/Linux 4.12.2-041202-generic x86_64)
ss version: shadowsocks-libev 3.1.3
- vi /etc/default/shadowsocks-libev
...
# add '-6' to resovle hostname to IPv6 address first
DAEMON_ARGS="-u -6"
...
- vi /etc/shadowsocks-libev/config.json
...
"dns_ipv6": true
...
- vi /etc/hosts
...
## Scholar
## type 'host google.com' to get the correct ipv6 address
## for me it's '2607:f8b0:4005:804::200e'
2607:f8b0:4005:804::200e scholar.google.cn
2607:f8b0:4005:804::200e scholar.google.com.hk
2607:f8b0:4005:804::200e scholar.google.com
2607:f8b0:4005:804::200e scholar.l.google.com
systemctl restart shadowsocks-libev