a transparent HTTPS terminator for letsencrypt with auto certificates renewal, you may need to read more about LetsEncrypt from here

• SSL Offloader .
• HTTP/2 support .
• Multi-Core support .
• Auto-Renewal for generated certificates .
• Blazing fast .
• Very light .
• Portable and small ~ 2 MB
• No system requirements .
• No configurations required, just httpsify --backend=http://127.0.0.1
• Passes X-Forwarded-* headers, X-Real-IP header and X-Remote-IP/X-Remote-Port to the backend server .

Currently the only available binaries are built for linux 386/amd64 and you can download them from here .
Building from source :
-- MAke sure you have Golang installed .
-- go get github.com/alash3al/httpsify.
-- go install github.com/alash3al/httpsify.
-- make sure that $GOPATH/bin in your $PATH .

lets say that you have extracted/built httpsify in the current working directory .

# this is the simplest way to run httpsify
# this will run a httpsify instance listening on port 443 and passing the incoming requests to http://localhost
# and building valid signed cerificates for the specified domains [they must be valid domain names]
./httpsify --backend=http://localhost --domains="domain.tld,www.domain.tld,another.domain.tld"

I'm Mohammed Al Ashaal