* Add maxErrorsPerFile blocking configuration
The default max errors per file of 5 is too small IMHO.
This commit makes this number user-configurable.
* squash: fix lint
* squash: docs
* squash: change type to int to allow -1
* squash: test that the `maxErrorsPerFile` is actually used
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Co-authored-by: ThinkChaos <ThinkChaos@users.noreply.github.com>
Unify the hosts file parsing between the hosts resolver and lists so
the resolver supports more data sources than local files.
Lists' group cache is now re-used if refresh fails.
Also improve lookups in hosts:
Instead of iterating through all hosts+aliases for each A/AAAA query,
we can do a single lookup.
For PTR we search through only the hosts with an IP version that matches
the question. And compare IPs instead of building the reverse DNS name
for each IP in the hosts database.
Dimitri Herzog