}

    @Test
    public void testCreateProviderTcp() {
        RdmaProvider provider = RdmaProviderFactory.createProvider("tcp");
        assertNotNull(provider, "TCP provider should always be available");
        assertTrue(provider.isAvailable(), "TCP provider should be available");
        assertEquals("TCP Fallback", provider.getProviderName());
    }

    @Test
    public void testCreateProviderDisni() {

      check(connectState == ConnectState.READY)
      events += "plan $id TCP connecting..."

      taskFaker.sleep(tcpConnectDelayNanos)

      if (yieldBeforeTcpConnectReturns) {
        taskFaker.yield()
      }

      return when {
        tcpConnectThrowable != null -> {
          events += "plan $id TCP connect failed"

/// tip | Tipp

Beachten Sie, dass die Verschlüsselung der Kommunikation auf der **TCP-Ebene** und nicht auf der HTTP-Ebene erfolgt.

///

### HTTPS-Request

Da Client und Server (sprich, der Browser und der TLS-Terminierungsproxy) nun über eine **verschlüsselte TCP-Verbindung** verfügen, können sie die **HTTP-Kommunikation** starten.

    )

    taskFaker.advanceUntil(520.ms)
    assertEvents(
      "plan 1 TCP connect failed",
    )

    taskFaker.advanceUntil(530.ms)
    assertEvents(
      "plan 2 TCP connect failed",
      "take plan 3",
      "plan 3 TCP connecting...",
    )

    taskFaker.advanceUntil(780.ms)
    assertEvents(
      "take plan 4",
      "plan 4 TCP connecting...",
    )

import jcifs.internal.smb2.rdma.RdmaProvider;

/**
 * TCP fallback RDMA provider.
 *
 * This provider uses regular TCP connections but maintains the RDMA
 * interface for compatibility. It only supports send/receive operations
 * and does not provide true RDMA read/write capabilities.
 */
public class TcpRdmaProvider implements RdmaProvider {

    /**
     * Creates a new TCP RDMA provider instance
     */

 */
package jcifs.internal.smb2.rdma.tcp;

import java.nio.ByteBuffer;
import java.util.EnumSet;
import java.util.concurrent.atomic.AtomicInteger;

import jcifs.internal.smb2.rdma.RdmaAccess;
import jcifs.internal.smb2.rdma.RdmaMemoryRegion;

/**
 * TCP memory region implementation.
 *
 * For TCP fallback, memory regions are just wrappers around

}
```

#### 4.5.2 Fallback TCP Provider
```java
package jcifs.internal.smb2.rdma.tcp;

public class TcpRdmaProvider implements RdmaProvider {
    @Override
    public boolean isAvailable() {
        return true;  // TCP is always available
    }
    
    @Override
    public Set<RdmaCapability> getSupportedCapabilities() {
        // TCP fallback only supports send/receive

import jcifs.internal.smb2.rdma.RdmaMemoryRegion;

/**
 * Unit tests for TCP RDMA provider
 */
public class TcpRdmaProviderTest {

    private TcpRdmaProvider provider;

    @BeforeEach
    public void setUp() {
        provider = new TcpRdmaProvider();
    }

    @Test
    public void testIsAvailable() {
        assertTrue(provider.isAvailable(), "TCP provider should always be available");
    }

    @Test

* Шифрование соединения происходит **на уровне протокола TCP**.
    * Протокол TCP находится на один уровень **ниже протокола HTTP**.
    * Поэтому **проверка сертификатов и шифрование** происходит **до HTTP**.
* **TCP не знает о "доменах"**, но знает об IP-адресах.
    * Информация о **запрашиваемом домене** извлекается из запроса **на уровне HTTP**.

import java.util.List;

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

import jcifs.Configuration;
import jcifs.internal.smb2.rdma.disni.DisniRdmaProvider;
import jcifs.internal.smb2.rdma.tcp.TcpRdmaProvider;

/**
 * Factory for creating RDMA provider instances.
 *
 * This factory attempts to select the best available RDMA provider
 * based on system capabilities and configuration preferences.
 */