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tor/changes/bug25226

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relay: Implement a circuit cell queue maximum size This commit introduces the consensus parameter "circ_max_cell_queue_size" which controls the maximum number of cells a circuit queue should have. The default value is currently 50000 cells which is above what should be expected but keeps us a margin of error for padding cells. Related to this is #9072. Back in 0.2.4.14-alpha, we've removed that limit due to a Guard discovery attack. Ticket #25226 details why we are putting back the limit due to the memory pressure issue on relays. Fixes #25226 Signed-off-by: David Goulet <dgoulet@torproject.org>
2018-03-20 20:27:58 +01:00
o Major bugfixes (relay, denial of service):
- Impose a limit on circuit cell queue size. The limit can be controlled by
a consensus parameter. Fixes bug 25226; bugfix on 0.2.4.14-alpha.
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