After installing the most recent SiteMonitor plugin, all of our jobs that use SiteMonitor began failing with a null pointer exception. I didn't see any meaningful output in jenkins.log. Here's all I see in the console output for a job build:

java.lang.NullPointerException - null
URL: http://google.com, response code: null, status: EXCEPTION

I assume this is because any existing jobs do not have the setting for the new cert-related checkbox, and under the hood the code doesn't handle this condition.

Consequently, all jobs using SiteMonitor must be resaved. This isn't ideal if you have a lot of SiteMonitor jobs across a lot of servers.

Any chance you could add a null check in the code and release a new version? Or, if you're willing to accept a n00b contribution, I'm happy to take a crack at it myself.

Thanks! We've been using the SiteMonitor plugin for years and it's served extremely well. I really appreciate all the (free) work you put in to maintaining a plugin.