How to see MS Project version programmatically

Question

I have two environments of MS Project. One is Project Server 2013, and the other is Project Online. With just the PWA Url, can I know which type of environment I'm trying to connect?

If just the URL is not enough, what's the minimum of information needed to know this programmatically?

I need to know this because apparently, I'll need to use NetworkCredential to login to Project Server, but if I'm connecting to Project Online, then I'll need to use SharePointOnlineCredentials.

Answer 1

Project Online is always going to have a host name like tenant.sharepoint.com. Your on-prem instance is going to have it's on specific url. This should be sufficient enough for you to determine which credential method to use.