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Edoardo Spadolini
9d91466a0e
* Remove unused backend wrapper from Cache * Remove double printShutdownStatus * Fix readyz race condition * Test coverage for the readyz.monitor fix * Close listeners immediately in proxy.shutdown * Use and handle net.ErrClosed correctly This adapts utils.IsUseOfClosedNetworkError to check for net.ErrClosed even inside trace.Aggregate errors, makes it so that we always return something that would pass errors.Is(err, net.ErrClosed) when returning from a (net.Listener).Accept(), and handles closed listeners within our various Serve() loops so that we don't hit spurious backoff waits while shutting down. * Close listeners early and emitters late * Test coverage for the proxy listener changes * Revert some errors back to trace.ConnectionProblem * Reduce PR scope to just the proxy, add comments * Improve error logging.