Thanks to Tony Finch for the program and the performance figure.
* New internal consistency checking with assert if right options set.
* New adns_wait_poll function like adns_wait but uses poll, not select.
Thanks to Tony Finch for the program and the performance figure.
* New internal consistency checking with assert if right options set.
* New adns_wait_poll function like adns_wait but uses poll, not select.