Found some interesting things

1. kcptun: https://github.com/xtaci/kcptun
2. kcp: https://github.com/skywind3000/kcp
3. v2ray: https://www.v2ray.com/

On you VPN, you should already run your shadowsocks server with port '838'

alias kcptun_start='~/kcptun/server_linux_amd64 -t "127.0.0.1:838" -l ":4000" -mode fast2'

or just use the command

./kcptun/server_linux_amd64 -t "127.0.0.1:838" -l ":4000" -mode fast2

So in your local machine, start the client:

sudo ./client_darwin_amd64 -r "xxx.pjq.me:4000" -l ":838" -mode fast2

Now we have set the connection from local port 838 to the remote port 4000.

Set the server to localhost/127.0.0.1, and the port 838

I did the follow testing

• Just download it directly, curl https://ef.pjq.me/download/20160420104351.rar -o asdf.rar
• Download it with Shadowsocks, curl –socks5-hostname localhost:1080 https://ef.pjq.me/download/20160420104351.rar -o asdf.rar
• Download it with Shadowsocks and kcptun, curl –socks5-hostname localhost:1080 https://ef.pjq.me/download/20160420104351.rar -o asdf.rar

So we can see the speed is 8689 → 60858 → 1088k, the speed is increased significant.

8.6k * 136, 60k * 18 = 1088k

Jianqings-MBP:~ pjq$ curl  https://ef.pjq.me/download/20160420104351.rar -o asdf.rar
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0 72.3M    0  175k    0     0   8689      0  2:25:31  0:00:20  2:25:11  3599^C
Jianqings-MBP:~ pjq$ curl --socks5-hostname localhost:1080 https://ef.pjq.me/download/20160420104351.rar -o asdf.rar
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  1 72.3M    1 1055k    0     0  60858      0  0:20:46  0:00:17  0:20:29 65614^C
Jianqings-MBP:~ pjq$ curl --socks5-hostname localhost:1080 https://ef.pjq.me/download/20160420104351.rar -o asdf.rar
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 72.3M  100 72.3M    0     0  1088k      0  0:01:08  0:01:08 --:--:-- 1235k