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0 pointscmeacham984y ago0 comments

This is literally the opposite of true. The OS-supplied resolver supports TCP DNS on all of the most popular desktop and mobile OSes and has for ages. I'd estimate a minimum of 90% of users have setups that support it, and I'm only hedging the 10% because I'm not sure how prevalent horribly misconfigured corporate firewalls are.

By not supporting TCP DNS you are the odd one out.

0 comments

toast04y ago

The OS supplied resolver may support it, but many networks block TCP DNS.

tptacek4y ago

Many networks also block AAAA DNS, because middleboxes are stupid. That doesn't mean it's OK for libc not to implement AAAA.

j / k navigate · click thread line to collapse

0 pointscmeacham984y ago0 comments

By not supporting TCP DNS you are the odd one out.

0 comments

toast04y ago

The OS supplied resolver may support it, but many networks block TCP DNS.

tptacek4y ago

Many networks also block AAAA DNS, because middleboxes are stupid. That doesn't mean it's OK for libc not to implement AAAA.

j / k navigate · click thread line to collapse