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Fix dns-01-003 (#1634)

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* plugin/{cache,forward,proxy}: don't allow responses that are bogus

Responses that are not matching what we've been querying for should be
dropped. They are converted into FormErrs by forward and proxy; as a 2nd
backstop cache will also not cache these.

* plug

* add explicit test
This commit is contained in:
Miek Gieben
2018-03-25 17:11:10 +01:00
committed by GitHub
parent 91413c25e1
commit 5616fcb175
7 changed files with 102 additions and 5 deletions
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plugin/cache/README.md vendored
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@@ -57,6 +57,7 @@ If monitoring is enabled (via the *prometheus* directive) then the following met
* `coredns_cache_capacity{type}` - Total capacity of the cache by cache type.
* `coredns_cache_hits_total{type}` - Counter of cache hits by cache type.
* `coredns_cache_misses_total{}` - Counter of cache misses.
* `coredns_cache_drops_total{}` - Counter of dropped messages.
Cache types are either "denial" or "success".