Working with captive portal

[davec-fvr]

I'm looking to integrate connecting to WIFI in a Node/Electron application and was wondering about captive portal WIFI. In my tests, the WIFI network shows up in the list of available connections and clicking it starts the connection and opens up the portal login page. So far so good. This is where I'm stuck, if I choose not to sign in at this point, Windows says I'm connected to the network and shows me that "action needed" with a button to reopen the portal. Is this something I can do in my electron app too? How can I tell that I'm connected to the wifi but not really connected until you sign in.