1485956 - make DNS cache lookups differ between TRR and non-TRR

Status: RESOLVED FIXED

(Core :: Networking: DNS, enhancement, P1)

Description

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An entry that ends up in the cache when TRR is allowed will not be re-used if the same host name is resolved again with TRR-disabled.

This way, a host name resolved with TRR that is cached will not be returned for a subsequent resolve with TRR explicitly *disabled*.

Comment 1

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To keep in mind:

1 - a regular non-TRR lookup should not do a second resolve on disable-TRR set

2 - a regular mode-2 TRR should still re-use the regular cache entries as long as disable-TRR is not set

Comment 2

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Attachment: bug 1485956 - make DNS cache lookups respect DISABLE_TRR

So that explicitly disabling TRR for specific resolves won't end up just
using the cached entry resolved with TRR!

MozReview-Commit-ID: HZ4AyKOMpet

Comment 3

[Valentin Gosu [:valentin]]

Comment on attachment 9003788 [details]
bug 1485956 - make DNS cache lookups respect DISABLE_TRR

Valentin Gosu [:valentin] has approved the revision.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9f1b27308bd6
make DNS cache lookups respect DISABLE_TRR r=valentin

Comment 5

[Arthur Iakab [arthur_iakab]]

https://hg.mozilla.org/mozilla-central/rev/9f1b27308bd6