errMetaCode := checkMetaHeaders(extractedSignedHeaders, r)
	if errMetaCode != ErrNone {
		return errMetaCode
	}

	// If the host which signed the request is slightly ahead in time (by less than globalMaxSkewTime) the
	// request should still be allowed.
	if pSignValues.Date.After(UTCNow().Add(globalMaxSkewTime)) {
		return ErrRequestNotReadyYet
	}