// compare errors against this variable.
	ErrShortBody = &ProtocolError{"entity body too short"}

	// Deprecated: ErrMissingContentLength is no longer returned by
	// anything in the net/http package. Callers should not
	// compare errors against this variable.
	ErrMissingContentLength = &ProtocolError{"missing ContentLength in HEAD response"}
)

	ErrInvalidPartNumber
	ErrInvalidRequestBody
	ErrInvalidCopySource
	ErrInvalidMetadataDirective
	ErrInvalidCopyDest
	ErrInvalidPolicyDocument
	ErrInvalidObjectState
	ErrMalformedXML
	ErrMissingContentLength
	ErrMissingContentMD5
	ErrMissingRequestBodyError
	ErrMissingSecurityHeader
	ErrNoSuchBucket
	ErrNoSuchBucketPolicy
	ErrNoSuchBucketLifecycle
	ErrNoSuchLifecycleConfiguration

	}

	// Content-Length is required and should be non-zero
	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
	if r.ContentLength <= 0 {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
		return
	}

	// The max. XML contains 100000 object names (each at most 1024 bytes long) + XML overhead
	const maxBodySize = 2 * 100000 * 1024

	if r.ContentLength > maxBodySize {

		return
	}

	// Error out if Content-Length is missing.
	if r.ContentLength <= 0 {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
		return
	}

	// Error out if Content-Length is beyond allowed size.
	if r.ContentLength > maxBucketPolicySize {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL)