The new auth_delay directive for delaying unauthorized requests.

The request processing is delayed by a timer.  Since nginx updates
internal time once at the start of each event loop iteration, this
normally ensures constant time delay, adding a mitigation from
time-based attacks.

A notable exception to this is the case when there are no additional
events before the timer expires.  To ensure constant-time processing
in this case as well, we trigger an additional event loop iteration
by posting a dummy event for the next event loop iteration.
2 files changed
tree: d5b20ceb8275a543c044fe6f2b7747204c45ed41
  1. auto/
  2. conf/
  3. contrib/
  4. docs/
  5. misc/
  6. src/
  7. .hgtags