# Bucket Versioning Design Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/)

## Description of `xl.meta`

`xl.meta` is a new self describing backend format used by MinIO to support AWS S3 compatible versioning.
This file is the source of truth for each `version` at rest. `xl.meta` is a msgpack file serialized from a

    inflater.close()

    assertFailsWith<Exception> {
      inflater.inflate("f240e30300".decodeHex())
    }
  }

  /**
   * Test for an [EOFException] caused by mishandling of fragmented buffers in web socket
   * compression. https://github.com/square/okhttp/issues/5965
   */
  @Test fun `inflate golden value in buffer that has been fragmented`() {
    val inflater = MessageInflater(false)

ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected no missing entries after decommission: $out"
	exit 1
fi

./s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://127.0.0.1:9001/ -bucket versioned

            object : EventListener() {
              override fun connectionAcquired(
                call: Call,
                connection: Connection,
              ) {
                val sslSocket = connection.socket() as SSLSocket

                sessionIds.add(
                  sslSocket.session.id
                    .toByteString()
                    .hex(),
                )
              }
            },

          .put(com.google.common.base.Optional.class, com.google.common.base.Optional.absent())
          .put(Predicate.class, Predicates.alwaysTrue())
          .put(Equivalence.class, Equivalence.equals())
          .put(Ticker.class, Ticker.systemTicker())
          .put(Stopwatch.class, Stopwatch.createUnstarted())
          // io types
          .put(InputStream.class, new ByteArrayInputStream(new byte[0]))

		Message:    "Tier name must be in uppercase",
		StatusCode: http.StatusBadRequest,
	}
	// error returned when remote tier bucket is not found
	errTierBucketNotFound = AdminError{
		Code:       "XMinioAdminTierBucketNotFound",
		Message:    "Remote tier bucket not found",
		StatusCode: http.StatusBadRequest,
	}
	// error returned when remote tier credentials are invalid.
	errTierInvalidCredentials = AdminError{

	xioutil "github.com/minio/minio/internal/ioutil"
	xnet "github.com/minio/pkg/v3/net"
	"github.com/minio/pkg/v3/sync/errgroup"
	"github.com/minio/pkg/v3/workers"

	"github.com/minio/minio/internal/bucket/bandwidth"
	"github.com/minio/minio/internal/logger"
)

// This file contains peer related notifications. For sending notifications to
// external systems, see event-notification.go

import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicLong
import java.util.concurrent.atomic.AtomicReference
import okhttp3.internal.USER_AGENT
import okio.ByteString

/**
 * Exercises the web socket implementation against the
 * [Autobahn Testsuite](http://autobahn.ws/testsuite/).
 */
class AutobahnTester {
  val client = OkHttpClient()

  private fun newWebSocket(
    path: String,

    }
    
    return null;  // No witness service found
}

private boolean isWitnessServiceAvailable(InetAddress address) {
    try (Socket socket = new Socket()) {
        socket.connect(new InetSocketAddress(address, 135), 5000);  // RPC endpoint
        return true;
    } catch (IOException e) {
        return false;
    }
}

    /** Maximum multiplex count for concurrent requests */
    protected int maxMpxCount = SmbConstants.DEFAULT_MAX_MPX_COUNT;
    /** Send buffer size for SMB socket operations */
    protected int smbSendBufferSize = SmbConstants.DEFAULT_SND_BUF_SIZE;
    /** Receive buffer size for SMB socket operations */
    protected int smbRecvBufferSize = SmbConstants.DEFAULT_RCV_BUF_SIZE;
    /** Buffer size for SMB notification operations */