I'm not totally sure I understand what you're doing, since Squid Proxy and OpenVPN are two different things. Are you trying to setup OpenVPN between your phone and the droplet, or a proxy?
i already both but this error occurs when i try to connect using my android phone
Tue May 2 16:56:49 2017 128.199.227.191:35978 TLSERROR: BIO read tlsreadplaintext error
Tue May 2 16:56:49 2017 128.199.227.191:35978 TLS Error: TLS object -> incoming plaintext read error
Tue May 2 16:56:49 2017 128.199.227.191:35978 TLS Error: TLS handshake failed
Tue May 2 16:56:49 2017 128.199.227.191:35978 Fatal TLS error (checktlserrorsco), restarting
Tue May 2 16:56:49 2017 128.199.227.191:35978 SIGUSR1[soft,tls-error] received, client-instance restarting
Tue May 2 16:56:56 2017 TCP connection established with [AFINET]128.199.227.191:35980
Tue May 2 16:56:56 2017 128.199.227.191:35980 TLS: Initial packet from [AFINET]128.199.227.191:35980, sid=8e4b839f 24c12f40
Tue May 2 16:56:57 2017 128.199.227.191:35980 OpenSSL: error:140890C7:SSL routines:SSL3GETCLIENTCERTIFICATE:peer did not return a certificate
Tue May 2 16:56:57 2017 128.199.227.191:35980 TLSERROR: BIO read tlsreadplaintext error
Tue May 2 16:56:57 2017 128.199.227.191:35980 TLS Error: TLS object -> incoming plaintext read error
Tue May 2 16:56:57 2017 128.199.227.191:35980 TLS Error: TLS handshake failed
Tue May 2 16:56:57 2017 128.199.227.191:35980 Fatal TLS error (checktlserrors_co), restarting
Tue May 2 16:56:57 2017 128.199.227.191:35980 SIGUSR1[soft,tls-error] received, client-instance restarting
[root@openvpn-sg3 ~]#
I'm not sure why it's failing - I would recommend adding more debug logging if that's all of logs when connecting.
Did you follow this tutorial?
https://www.digitalocean.com/community/tutorials/how-to-setup-and-configure-an-openvpn-server-on-centos-7
yes i followed that tutorial this is my error on my phone unknown openVPN event occured : transport error on <my server ip address> via HTTP proxy <my server ip address>:80 networkoeferror
But I don't understand why this has anything to do with proxy.
Have a look at this tutorial, since it contains examples on how to setup Android/iPhone:
https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-16-04#step-12-install-the-client-configuration
