}

    // Error case: disconnect throws IOException
    @Test
    @DisplayName("disconnect throws IOException when underlying close fails")
    void disconnect_throwsIOException() throws Exception {
        doThrow(new java.io.IOException("close error")).when(transport).disconnect(true, true);
        java.io.IOException ex = assertThrows(java.io.IOException.class, () -> transport.disconnect(true, true));

                thread = null;
            }
        }
    }

    /**
     * Disconnects from the remote endpoint.
     *
     * @param hard if true, disconnect immediately without waiting for outstanding requests
     * @throws IOException if an I/O error occurs during disconnection
     */
    public synchronized void disconnect(boolean hard) throws IOException {
        IOException ioe = null;

        switch (state) {

		return pongMsg{Err: &err}
	default:
		atomic.StoreInt64(&m.LastPing, time.Now().Unix())
		return pongMsg{}
	}
}

// disconnect will disconnect the mux.
// m.recvMu must be locked when calling this function.
func (m *muxServer) disconnect(msg string, locked bool) {
	if debugPrint {
		fmt.Println("Mux", m.ID, "disconnecting. Reason:", msg)
	}
	if msg != "" {

import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Disconnect request message.
 *
 * This command is used to disconnect from a previously
 * connected tree (shared resource).
 *
 * @author mbechler
 */
public class Smb2TreeDisconnectRequest extends ServerMessageBlock2Request<Smb2TreeDisconnectResponse> {

    /**
     * Creates a new SMB2 tree disconnect request to close a tree connection.
     *

            // Disconnect and try again from scratch.

            if (log.isDebugEnabled()) {
                log.debug(String.format("Retrying (%d/%d) request %s", retries, maxRetries, request));
            }

            // should we disconnect the transport here? otherwise we make an additional attempt to detect that if the

        nonPooledConnections.offer(nonPooledSpy);

        // Mock disconnect behavior
        when(pooledSpy.disconnect(false, false)).thenReturn(true); // In use
        when(nonPooledSpy.disconnect(false, false)).thenReturn(false); // Not in use

        // When: Close the pool
        boolean inUse = pool.close();

        // Then: Should report in-use and call disconnect on all
        assertTrue(inUse, "Should report connections in use");

import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Disconnect response message.
 *
 * This response confirms that the tree connection
 * has been successfully disconnected.
 *
 * @author mbechler
 */
public class Smb2TreeDisconnectResponse extends ServerMessageBlock2Response {

    /**
     * Creates a new SMB2 tree disconnect response.
     *
     * @param config the CIFS configuration
     */

        return delegate.hasCapability(cap);
    }

    @Override
    public boolean isDisconnected() {
        return delegate.isDisconnected();
    }

    @Override
    public boolean disconnect(boolean hard, boolean inuse) throws IOException {
        synchronized (connectionLock) {
            if (rdmaConnection != null) {
                try {
                    rdmaConnection.close();

                     * Someone removed the share while we were
                     * connected. Bastards! Disconnect this tree
                     * so that it reconnects cleanly should the share
                     * reappear in this client's lifetime.
                     */
                    log.debug("Disconnect tree on NT_STATUS_NETWORK_NAME_DELETED");
                    treeDisconnect(true, true);
                }

        return responseData;
    }

    /**
     * Disconnects the internal FTP client and logs any errors.
     * This method is used to clean up failed connections.
     *
     * @param client The FTP client to disconnect
     */
    protected void disconnectInternalClient(final FTPClient client) {
        try {
            client.disconnect();
        } catch (final IOException e) {