BUG: cURL request not allowing URLs that are using self-signed certificates

[renzms]

Steps to reproduce:

• On WordPress 4.6.1
• Install and activate Comet Cache™ Pro v161119
• Install Google XML Sitemaps Version 4.0.8
• Enable the Auto Cache Engine feature of Comet Cache Pro

Observed Behaviour:

Upon enabling the Auto Cache Engine the following message prompt appears:

Comet Cache says... The Auto-Cache Engine is currently configured with an XML Sitemap location that could not be found. We suggest that you install the Google XML Sitemaps plugin. Or, empty the XML Sitemap field and only use the list of URLs instead. See: Dashboard → Comet Cache → Auto-Cache Engine → XML Sitemap URL

Problematic Sitemap URL: https://domain.net/sitemap.xml / Diagnostic Report: WP_Http says: cURL error 60: SSL certificate problem: self signed certificate in certificate chain.

[raamdev]

Noting additional required steps to reproduce:

• Ensure that the site is set up for SSL using a self-signed certificate
• Ensure that the XML Sitemap URL points to the https:// version

[dimitris-t]

Any workarounds?