*/
package jcifs;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * This is an internal API for managing pools of SMB connections
 *
 * @author mbechler
 *
 * <p>This interface is intended for internal use.</p>
 */
public interface SmbTransportPool {

    /**
     * Gets an SMB transport connection to the specified server.
     *

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSException;
import jcifs.Configuration;

/**
 * SMB3 Multi-Channel Manager.
 *
 * Manages multiple network connections for improved performance and redundancy
 * as specified in the SMB 3.x multi-channel feature.
 */
public class MultiChannelManager {

    private static final Logger log = LoggerFactory.getLogger(MultiChannelManager.class);

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink =
    when {
      request.body?.isDuplex() == true -> throw ProtocolException(
        "Duplex connections are not supported for HTTP/1",
      )
      request.isChunked -> newChunkedSink() // Stream a request body of unknown length.
      contentLength != -1L -> newKnownLengthSink() // Stream a request body of a known length.

      allocationLimit = settings.getMaxConcurrentStreams()

      if (allocationLimit < oldLimit) {
        // We might need new connections to keep policies satisfied
        connectionPool.scheduleOpener(route.address)
      } else if (allocationLimit > oldLimit) {
        // We might no longer need some connections
        connectionPool.scheduleCloser()
      }
    }
  }

  override fun handshake(): Handshake? = handshake

 *  New: `ConnectionPool.setPolicy()` configures a minimum connection pool size for a target
    address. Use this to proactively open HTTP connections.

    Connections opened to fulfill this policy are subject to the connection pool's
    `keepAliveDuration` but do not count against the pool-wide `maxIdleConnections` limit.

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.multichannel;

/**
 * Load balancing strategies for multi-channel connections
 */
public enum LoadBalancingStrategy {
    /**
     * Round-robin selection through available channels
     */
    ROUND_ROBIN,

    /**
     * Select the least busy channel based on pending operations

import java.net.Proxy
import java.net.Socket
import okhttp3.Connection
import okhttp3.Handshake
import okhttp3.HttpUrl
import okhttp3.Protocol
import okhttp3.Route

/**
 * A user that is a connection pool creating connections in the background
 * without an intent to immediately use them.
 */
object PoolConnectionUser : ConnectionUser {
  override fun addPlanToCancel(connectPlan: ConnectPlan) {
  }

  Set<N> adjacentNodes();

  Set<N> predecessors();

  Set<N> successors();

  /**
   * Returns an iterator over the incident edges.
   *
   * @param thisNode The node that this all of the connections in this class are connected to.
   */
  Iterator<EndpointPair<N>> incidentEdgeIterator(N thisNode);

  /**
   * Returns the value associated with the edge connecting the origin node to {@code node}, or null

	//   isTransaction: Indicates whether this operation is part of a transaction, which may affect the caching strategy.
	//   connPool: A connection pool that provides database connections.
	//   locker: A synchronization lock that is unlocked after initialization to avoid deadlocks.
	// Returns:
	//   *Stmt: A newly created statement object for executing SQL operations.

- Update `SmbFile` caching logic to use leases
- Add lease break handling in `SmbTransport`

---

### Phase 2: Persistent Handles
**Priority: HIGH** | **Estimated Effort: 4-5 weeks**

Persistent handles allow connections to survive network interruptions and server failovers.

#### 2.1 Core Persistent Handle Infrastructure
```
Package: jcifs.internal.smb2.persistent
├── PersistentHandleContext.java     - Persistent handle create context