SOCKS5 client for Android 5.0+ making use of the VpnService API and tun2socks so that it works without root permission (unlike ProxyDroid).
Most of the JNI code are imported from shadowsocks-android project because they have already done most of the work.
As tun2socks does not support UDP associate but has its own implementation of UDP forwarding badvpn-udpgw, so it is needed that the udpgw daemon run on remote server to use UDP forwarding.
On remote server
badvpn-udpgw --listen-addr 127.0.0.1:7300
And set UDP Gateway in this app to 127.0.0.1:7300
If the server does not run udpgw, DNS lookups can also be processed in this app.
It makes use of the TCP DNS feature of pdnsd. You just set a DNS server that supports TCP DNS in this app, and all DNS requests will be transformed into TCP queries.
The app has an embedded list of non-Chinese IPs. Chinese users can make use of it for best experience in bypassing GFW.
Note that SOCKS5 is currently blocked by the GFW, which means Chinese users cannot connect to any SOCKS5 servers outside China.
But there are still solutions. For example, use stunnel to wrap the SOCKS5 connection with SSL. See my project stunnel-android for usage on Android.
This project is licensed under GNU General Public License Version 3 or later.