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deps: cherry-pick 0ef4a0c64b6 from c-ares upstream
Original commit message:

  gethostbyaddr: fail with `ECANCELLED` for `ares_cancel()`

  When `ares_cancel()` was invoked, `ares_gethostbyaddr()`
  queries would fail with `ENOTFOUND` instead of `ECANCELLED`.

  It seems appropriate to treat `ares_cancel()` like `ares_destroy()`,
  but I would appreciate review of the correctness of this change.

  Ref: #14814

Fixes: #14814

PR-URL: #15023
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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addaleax authored and rvagg committed Sep 13, 2017
commit b02613f28d623d656335f2798e2d25b5ae4e2cdd
2 changes: 1 addition & 1 deletion deps/cares/src/ares_gethostbyaddr.c
Original file line number Diff line number Diff line change
Expand Up @@ -157,7 +157,7 @@ static void addr_callback(void *arg, int status, int timeouts,
}
end_aquery(aquery, status, host);
}
else if (status == ARES_EDESTRUCTION)
else if (status == ARES_EDESTRUCTION || status == ARES_ECANCELLED)
end_aquery(aquery, status, NULL);
else
next_lookup(aquery);
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