* concurrently.
 */

public abstract class Transport implements Runnable {

    /**
     * Default constructor for Transport.
     */
    public Transport() {
        // Default constructor
    }

    static int id = 0;
    static LogStream log = LogStream.getInstance();

    /**
     * Reads exactly len bytes from the input stream into the buffer.
     *

 * concurrently.
 */

/**
 * Abstract base class for network transport implementations in JCIFS.
 * This class handles the low-level transport protocol for SMB communication.
 */
public abstract class Transport implements Runnable, AutoCloseable {

    /**
     * Default constructor for Transport
     */
    protected Transport() {
        // Default constructor
    }

    private static int id = 0;

import org.apache.maven.api.annotations.Nonnull;

/**
 * Transport for specified remote repository (using provided remote repository base URI as root). Must be treated as a
 * resource, best in try-with-resource block.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface Transport extends Closeable {
    /**

		return tr
	}
}

// uaTransport - User-Agent  transport
type uaTransport struct {
	ua string
	rt http.RoundTripper
}

func (u *uaTransport) RoundTrip(req *http.Request) (*http.Response, error) {
	req2 := req.Clone(req.Context())
	req2.Header.Set("User-Agent", u.ua)
	return u.rt.RoundTrip(req2)
}

// WithUserAgent wraps an existing transport with custom User-Agent

        void testRemoveTransport() {
            // Given
            doNothing().when(transportPool).removeTransport(transport);

            // When
            transportPool.removeTransport(transport);

            // Then
            verify(transportPool).removeTransport(transport);
        }

        @Test
        @DisplayName("Should handle null transport removal")

    void signingModes() throws Exception {
        when(transport.isSigningOptional()).thenReturn(true);
        when(transport.isSigningEnforced()).thenReturn(false);

        assertTrue(transport.isSigningOptional());
        assertFalse(transport.isSigningEnforced());
        verify(transport).isSigningOptional();
        verify(transport).isSigningEnforced();
    }

    @Test
    @DisplayName("Should remove transport from pool")
    void testRemoveTransport() {
        // Given: A pooled connection
        SmbTransportImpl transport = pool.getSmbTransport(ctx, address, 445, false);
        assertTrue(pool.contains(transport), "Transport should be in pool initially");

        // When: Remove the transport
        pool.removeTransport(transport);

 * <p>
 * This implementation is backed by Maven Resolver API, supported protocols and transport selection depends on it. If
 * resolver preference regarding transport is altered, it will affect this service as well.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface TransportProvider extends Service {
    /**
     * Provides new {@link Transport} instance for given {@link RemoteRepository}, if possible.
     *

        setField(transport, "smb2", false);
        Smb2NegotiateResponse smb2 = new Smb2NegotiateResponse(cfg);
        setField(transport, "negotiated", smb2);
        assertTrue(transport.isSMB2());

        // 3) SMB1 negotiation
        SmbComNegotiateResponse smb1 = new SmbComNegotiateResponse(ctx);
        setField(transport, "negotiated", smb1);
        assertFalse(transport.isSMB2());
    }

    @Test

    }

    synchronized SmbTransport transport() {
        if (transport == null) {
            transport = SmbTransport.getSmbTransport(address, port, localAddr, localPort, null);
        }
        return transport;
    }

    void send(final ServerMessageBlock request, final ServerMessageBlock response) throws SmbException {
        synchronized (transport()) {
            if (response != null) {