This is an open-sourced Secure Socket Tunneling Protocol (MS-SSTP) client for Android, developed for accessing to VPN Azure Cloud. So no test with other servers is done. Its behavior may be still unstable.

• You need to allow unknown sources
• Download .apk file here and install it

Fill Host, Username and Password fields and push CONNECT button. If a key icon gets to show on the right side of the status bar, establishing a VPN connection has been succeeded. To disconnect the connection, push DISCONNECT in the main activity or the notification.

Licensed under MIT. Be sure you use this software at your own risk.

• heavy CPU usage due to using many coroutines (Not so much in my device. Please let me know if it's problematic.)

• decrease coroutines to two for incoming/outgoing packets
• get able to access to a server with a self-signed certificate