// Calculate signature.
	newSignature := getSignature(signingKey, stringToSign)

	return newSignature
}

// calculateSeedSignature - Calculate seed signature in accordance with
//   - http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-streaming.html
//
// returns signature, error otherwise if the signature mismatches or any other
// error while parsing and validating.

		return
	}

	// Content-Md5 is required should be set
	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
	if !validateLengthAndChecksum(r) {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentMD5), r.URL)
		return
	}

	// Content-Length is required and should be non-zero
	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
	if r.ContentLength <= 0 {

	"github.com/minio/pkg/v3/policy"
)

// PutBucketReplicationConfigHandler - PUT Bucket replication configuration.
// ----------
// Add a replication configuration on the specified bucket as specified in https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketReplication.html
func (api objectAPIHandlers) PutBucketReplicationConfigHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "PutBucketReplicationConfig")

			//  If both of the If-None-Match and If-Modified-Since headers are present in the request as follows:
			// 	If-None-Match condition evaluates to false , and;
			//  If-Modified-Since condition evaluates to true ;
			// 	Then Amazon S3 returns the 304 Not Modified response code.
			// 2. If If-Modified-Since condition evaluates to false, The following `ifModifiedSinceHeader` judgment will also return 304

Example:

```sh
export MINIO_DOMAIN=mydomain.com
minio server /data
```

e) | ![Dashboard](https://github.com/minio/minio/blob/master/docs/screenshots/pic2.png?raw=true) | ## Test using MinIO Client `mc` `mc` provides a modern alternative to UNIX commands like ls, cat, cp, mirror, diff etc. It supports filesystems and Amazon S3 compatible cloud storage services. Follow the MinIO Client [Quickstart Guide](https://min.io/docs/minio/linux/reference/minio-mc.html#quickstart) for further instructions. ## Upgrading MinIO Upgrades require zero downtime in MinIO, all upgrades...

// Streaming signature clients can have custom content-encoding such as
// `aws-chunked,gzip` here we need to only save `gzip`.
// For more refer http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-streaming.html
func trimAwsChunkedContentEncoding(contentEnc string) (trimmedContentEnc string) {
	if contentEnc == "" {
		return contentEnc
	}
	var newEncs []string

		return nil, err
	}
	return &req, nil
}

// validate a RestoreObjectRequest as per AWS S3 spec https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html
func (r *RestoreObjectRequest) validate(ctx context.Context, objAPI ObjectLayer) error {
	if r.Type != SelectRestoreRequest && !r.SelectParameters.IsEmpty() {

				"application/vnd.adobe.xdp+xml",
				"application/vnd.adobe.xfdf",
				"application/vnd.aether.imp",
				"application/vnd.airzip.filesecure.azf",
				"application/vnd.airzip.filesecure.azs",
				"application/vnd.amazon.ebook",
				"application/vnd.americandynamics.acc",
				"application/vnd.amiga.ami",
				"application/vnd.anser-web-certificate-issue-initiation",
				"application/vnd.anser-web-funds-transfer-initiation",

// separated by periods. Each label can contain lowercase ascii
// letters, decimal digits and hyphens, but must not begin or end with
// a hyphen. See:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html
func IsValidBucketName(bucket string) bool {
	// Special case when bucket is equal to one of the meta buckets.
	if isMinioMetaBucketName(bucket) {
		return true
	}