I'm sorry to hear about the issues you're seeing connecting osapi.http.get with https://helpdesk.mulkeyinc.com. Unfortunately, I'm not aware of the specific differences that might cause this with your environment. Please also be aware that development related questions are outside the scope of Jive Customer Support.
I've moved your discussion over to the Jive Developers space for guidance from the development community. In the future, feel free to submit a development related question directly to that space.
Thanks Jeph. I have sorted the issue. It was happening due to certificates issue at WHD server. The issue is resolved now.