3 ms·
I don't think there's a reason to use TCP for this unless you want to check for TCP connectivity specifically. Just do a DNS lookup against a list of well-know
by maltalex 7y ago
I don't think there's a reason to use TCP for this unless you want to check for TCP connectivity specifically.
Just do a DNS lookup against a list of well-known public DNS servers.
- deleted 7y ago[deleted]
- oconnor663 7y agoOne reason not to do DNS exclusively is that many networks allow DNS requests (and intercept them) but block HTTP requests.
- jesusprubio 7y agoBTW, there're parts of DNS over TCP.