Accept-Ranges: bytes
Content-Length: 0
Server: MinIO
Vary: Origin
X-Amz-Bucket-Region: us-east-1
X-Minio-Write-Quorum: 3
X-Amz-Request-Id: 16239D6AB80EBECF
X-Xss-Protection: 1; mode=block
Date: Tue, 21 Jul 2020 00:36:14 GMT
```

### Cluster-readable probe

The reply is '200 OK' if cluster has read quorum if not it returns '503 Service Unavailable'.

```
curl http://minio1:9001/minio/health/cluster/read

	errLifecycleInvalidDeleteMarker = Errorf("Delete marker cannot be specified with Days or Date in a Lifecycle Expiration Policy")
	errLifecycleDateNotMidnight     = Errorf("'Date' must be at midnight GMT")
	errLifecycleInvalidDeleteAll    = Errorf("Days (positive integer) should be present inside Expiration with ExpiredObjectAllVersions.")
)

// ExpirationDays is a type alias to unmarshal Days in Expiration

// modification time plus the number of transition/restore days.
//
//	e.g. If the object modtime is `Thu May 21 13:42:50 GMT 2020` and the object should
//	    transition in 1 day, then the expected transition time is `Fri, 23 May 2020 00:00:00 GMT`
func ExpectedExpiryTime(modTime time.Time, days int) time.Time {
	if days == 0 {
		return modTime
	}

	// are usually in http.TimeFormat however there are
	// situations where for example aws-sdk-java doesn't
	// send the correct format.
	http.TimeFormat,
	"Mon, 2 Jan 2006 15:04:05 GMT",
}

// ParseHeader parses http.TimeFormat with an acceptable
// extension for http.TimeFormat - return time might be zero
// if the timeStr is invalid.
func ParseHeader(timeStr string) (time.Time, error) {

			bucketName:         bucketName,
			newObjectName:      "newObject1",
			copySourceHeader:   url.QueryEscape(SlashSeparator + bucketName + SlashSeparator + objectName),
			copyModifiedHeader: "Mon, 02 Jan 2006 15:04:05 GMT",
			accessKey:          credentials.AccessKey,
			secretKey:          credentials.SecretKey,
			expectedRespStatus: http.StatusOK,
		},