On Sun, 30 Aug 2020, Narasimha M wrote:
Is there a way to force the name resolution/DNS checking periodically.
You can for example close your handle and crete a new one, so that the
connection won't survive.
In my particular case, I would like to keep a single connection and check
for updates on the server using that connection forever.
If you want to reuse the connection, why would you bother to resolve the name
over and over? It's pointless then!
Could you please explain when CURLOPT_DNS_CACHE_TIMEOUT is used?
When libcurl wants to resolve a host name it checks if the address is already
present in its DNS cache, where it will be stored and used for up to
CURLOPT_DNS_CACHE_TIMEOUT seconds.
If the connection lives for more than this time and if the time between
performs is more than this time, resolution would be done.
Not at all. If there's an existing connection present already, there's no need
to resolve the name.
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