Open Bug 1650353 Opened 6 years ago

CNAME requests might not be immediately cancelled

Categories

(Core :: Networking: DNS, defect, P3)

Product:
Core
Component:
Networking: DNS
Type:
defect

Tracking

()

People

(Reporter: valentin, Unassigned)

References

(Blocks 1 open bug)

Details

(Whiteboard: [necko-triaged])

If a DNS resolve ends up in a CNAME that we have to follow, and we cancel the DNS resolve, then it might not cancel the subsequent TRR.
This isn't a big problem in practice, because recursive resolvers usually return all CNAMES in the same packet, and because the uncancelled TRR would not have any listeners to notify anyway.
But this should probably be fixed.

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