I've been working on getting the RFC 8908 API to work, but I'm running into an issue. I have it properly configured over HTTPS, and it returns this response:
JSON
{
"captive": false,
"user-portal-url": "https://hg409w66ay4.sn.mynetname.net/login",
"seconds-remaining": 3547,
"can-extend-session": true
}
Despite the valid response, Samsung devices are ignoring it entirely and failing showing time left as described in the Android docs: https://source.android.com/docs/core/connect/android-custom-tabs-captive-portal#act-discovery