If an incoming request does not validate correctly then a `400` response will be sent.

## `GZipMiddleware` { #gzipmiddleware }

Handles GZip responses for any request that includes `"gzip"` in the `Accept-Encoding` header.

The middleware will handle both standard and streaming responses.

{* ../../docs_src/advanced_middleware/tutorial003.py hl[2,6] *}

The following arguments are supported:

import jakarta.annotation.Resource;

/**
 * Service class for managing group operations in the Fess application.
 * Provides CRUD operations for groups, including integration with LDAP manager
 * and user-group relationships. Handles group pagination, searching, and
 * maintaining data consistency between groups and associated users.
 */
public class GroupService {

    /** Behavior class for group database operations */
    @Resource

        // when proper conditions are not met.

        Map<String, Object> docMap = new HashMap<>();

        // This will return false because getFessConfig() will fail
        // We verify the method handles the case gracefully
        try {
            emptyGenerator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized

import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
import org.jspecify.annotations.Nullable;

/**
 * Abstract implementation of {@link InvocationHandler} that handles {@link Object#equals}, {@link
 * Object#hashCode} and {@link Object#toString}. For example:
 *
 * <pre>
 * class Unsupported extends AbstractInvocationHandler {

import jcifs.internal.smb1.trans.SmbComTransactionResponse;
import jcifs.internal.util.SMBUtil;

/**
 * Trans2 FindFirst2 response message for SMB1 directory enumeration.
 * This class handles the response from a TRANS2_FIND_FIRST2 request, which returns
 * the first set of directory entries matching the specified search criteria.
 */
public class Trans2FindFirst2Response extends SmbComTransactionResponse {

        verify(tree, times(1)).send(argThat((Request<?> r) -> r instanceof Smb2CloseRequest));
    }

    @Test
    @DisplayName("fetchMore() handles NT_STATUS_NO_MORE_FILES via exception")
    void fetchMore_handles_no_more_files_exception() throws Exception {
        // Setup required for this test
        when(parent.getLocator()).thenReturn(locator);

    }
    return makeHash();
  }

  /**
   * Computes a hash code based on the data that have been provided to this hasher. This is called
   * after all chunks are handled with {@link #process} and any leftover bytes that did not make a
   * complete chunk are handled with {@link #processRemaining}.
   */
  protected abstract HashCode makeHash();

  // Process pent-up data in chunks
  private void munchIfFull() {

    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (sslSocket is BCSSLSocket) {
      when (val protocol = (sslSocket as BCSSLSocket).applicationProtocol) {
        // Handles both un-configured and none selected.
        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {

    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (sslSocket is org.openjsse.javax.net.ssl.SSLSocket) {
      when (val protocol = sslSocket.applicationProtocol) {
        // Handles both un-configured and none selected.
        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {

        assertTrue(exceptions.isEmpty(), "No exceptions should occur");
        assertEquals(threadCount * opsPerThread, successCount.get(), "All operations should succeed");
    }

    /**
     * Test that buffer cache handles allocation when cache is full.
     */
    @Test
    public void testBufferAllocationWhenCacheFull() {
        // Given - Allocate many buffers to potentially fill the cache