// nolint: lll
var cgroupREs = []*regexp.Regexp{
	// the regex used to parse out the pod UID and container ID from a
	// cgroup name. It assumes that any ".scope" suffix has been trimmed off
	// beforehand.  CAUTION: we used to verify that the pod and container id were
	// descendants of a kubepods directory, however, as of Kubernetes 1.21, cgroups

	ErrorLevel:    "error",
	CriticalLevel: "critical",
	OffLevel:      "off",
}

var stringToLevel = map[string]Level{
	"trace":    TraceLevel,
	"debug":    DebugLevel,
	"info":     InfoLevel,
	"warning":  WarningLevel,
	"warn":     WarningLevel,
	"error":    ErrorLevel,
	"critical": CriticalLevel,
	"off":      OffLevel,
}

var (
	loggerLevelString = ""
	reset             = false

    CZ--"HBONE (actual)"-->SZ
    SZ--Plain-->Server
```

### Pooling

User connections can be multiplexed over shared HBONE connections.
This is done through standard HTTP/2 pooling.
The pooling is keyed off the `{source identity, destination identity, destination ip}`.

### Headers

Ztunnel uses the following well-known headers in HBONE:

	ErrorLevel:    "error",
	CriticalLevel: "critical",
	OffLevel:      "off",
}

var stringToLevel = map[string]Level{
	"trace":    TraceLevel,
	"debug":    DebugLevel,
	"info":     InfoLevel,
	"warning":  WarningLevel,
	"warn":     WarningLevel,
	"error":    ErrorLevel,
	"critical": CriticalLevel,
	"off":      OffLevel,
}

var (
	loggerLevelString = ""
	reset             = false