VPN application/software for Windows

I need an Windows VPN application with the following features: - Supports PPTP, L2TP, SSTP, OpenVPN (UDP - TCP - Auto) - Speed test (Speed Meter): ping, download & upload. - Auto connect/port detector: App must search what VPN protocol's port is open in client's ISP and connect to that protocol automatically - DNS Leak Protection - IPV6 Leak Protection - Kill Switch (In case of an unwanted VPN disconnection normally your traffic would be exposed again. But when you enable Kill Switch, once the disconnection happens, it automatically closes all applications that are running at the time and have been previously added to the Kill Switch app list.) - Split Tunneling (lets you run VPN on your selected application. Rest of the traffic will pass through your ISP) - Port Checker: User can check if any port number is open from server-side or not - Source code is required - Compatible with all Windows Vista and above - Auto update - 30 days free bug support is required - API and PSD and server-side are ready - Deadline: up to 40 days - UI attached