Imports tailscale.com/logpolicy tailscale.com/logtail tailscale.com/logtail/filch tailscale.com/net/netmon tailscale.com/net/sockstats tailscale.com/smallzstd tailscale.com/types/logger tailscale.com/types/logid tailscale.com/util/mak Standard library imports context crypto/sha256 encoding/json io net/http os path/filepath sync/atomic time