Btw. Android seems to use a very similar technique. It calls http://x/generate_204 while x is one of multiple Google-owned internet hosts (for example connectivitycheck.android.com or clients1.google.com), see also https://stackoverflow.com/questions/1989214/google-com-and-clients1-google-com-generate-204.
Btw. Android seems to use a very similar technique. It calls http:// x/generate_ 204 while x is one of multiple Google-owned internet hosts (for example connectivityche ck.android. com or clients1. google. com), see also https:/ /stackoverflow. com/questions/ 1989214/ google- com-and- clients1- google- com-generate- 204.