dnsdist: Proper HTTP response for timeouts over DoH #7927
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Fixed the use-after-free race reported by ASAN on Circle CI. |
In rare cases, the responder thread might get a response _before_ the send() call of the DoH client thread has returned, resulting in ASAN reporting a use-after-free since the response was written into the now useless query object.
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Rebased now that #7917 has been merged. |
omoerbeek
reviewed
Jul 16, 2019
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I must say I don't grasp all of dnsdist yet, but this PR look ok (with the one comment on the nullptr case). |
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Giving up on the LGTM check, it is simply taking too long. |
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Short description
Timeouts, actively discovered or not, were not properly handled for DoH queries.
This PR is based on top of #7917 so we can send a proper HTTP status code, it will need to be rebased.
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