Jithendar,
With DevTest you will be able to do one or the other - HTTP OR HTTPS.
To forward HTTP to HTTPS you would need to use reverse-proxy, but be careful with WebSockets. The proxy MUST support WebSockets.
From our documentation: System Requirements - DevTest Solutions - 10.1 - CA Technologies Documentation
DevTest Portal provides content to browsers with WebSockets. Any browser that you use must support WebSockets to be able to successfully use DevTest Portal. Any firewall or reverse-proxy that you use must also permit the use of WebSockets. If they do not, we recommend that you access DevTest Portal with HTTPS to allow WebSocket connectivity.
In summary, redirect to https, or be careful of WebSockets.
Hope it helps.
Heloisa