replace latch with future

gradle.properties

@@ -1,6 +1,6 @@
 group = org.xbib
 name = netty-http-client
-version = 4.1.11.2
+version = 4.1.11.3
 
 netty.version = 4.1.11.Final
 tcnative.version = 2.0.1.Final

src/main/java/org/xbib/netty/http/client/HttpClient.java

@@ -50,6 +50,7 @@ import org.xbib.netty.http.client.util.NetworkUtils;
 import java.io.Closeable;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.net.ConnectException;
 import java.net.URI;
 import java.net.URLDecoder;
 import java.util.Collection;
@@ -70,6 +71,13 @@ public final class HttpClient implements Closeable {
 
     private static final HttpClient INSTANCE = HttpClient.builder().build();
 
+    static {
+        NetworkUtils.extendSystemProperties();
+        logger.log(Level.FINE, () -> "OpenSSL ALPN support: " + OpenSsl.isAlpnSupported());
+        logger.log(Level.FINE, () -> "local host name = " + NetworkUtils.getLocalHostName("localhost"));
+        logger.log(Level.FINE, NetworkUtils::displayNetworkInterfaces);
+    }
+
     private final ByteBufAllocator byteBufAllocator;
 
     private final EventLoopGroup eventLoopGroup;
@@ -87,10 +95,6 @@ public final class HttpClient implements Closeable {
         this.byteBufAllocator = byteBufAllocator;
         this.eventLoopGroup = eventLoopGroup;
         this.poolMap = new HttpClientChannelPoolMap(this, httpClientChannelContext, bootstrap, maxConnections);
-        logger.log(Level.FINE, () -> "OpenSSL ALPN support: " + OpenSsl.isAlpnSupported());
-        NetworkUtils.extendSystemProperties();
-        logger.log(Level.FINE, () -> "local host name = " + NetworkUtils.getLocalHostName("localhost"));
-        logger.log(Level.FINE, NetworkUtils::displayNetworkInterfaces);
     }
 
     public static HttpClient getInstance() {
@@ -225,7 +229,7 @@ public final class HttpClient implements Closeable {
         logger.log(Level.FINE, () -> "closing pool map");
         poolMap.close();
         logger.log(Level.FINE, () -> "closing event loop group");
-        if (!eventLoopGroup.isTerminated()) {
+        if (!eventLoopGroup.isShuttingDown()) {
             eventLoopGroup.shutdownGracefully();
         }
         logger.log(Level.FINE, () -> "closed");
@@ -360,7 +364,7 @@ public final class HttpClient implements Closeable {
                 if (exceptionListener != null) {
                     exceptionListener.onException(future.cause());
                 }
-                httpRequestContext.fail("channel pool failure");
+                httpRequestContext.fail(new ConnectException("unable to connect to " + inetAddressKey));
             }
         });
     }

src/main/java/org/xbib/netty/http/client/HttpClientRequestBuilder.java

@@ -52,8 +52,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Function;
 import java.util.logging.Level;
@@ -102,6 +100,8 @@ public class HttpClientRequestBuilder implements HttpRequestBuilder, HttpRequest
 
     private HttpRequest httpRequest;
 
+    private HttpRequestFuture<String> httpRequestFuture = DEFAULT_FUTURE;
+
     private HttpRequestContext httpRequestContext;
 
     private HttpResponseListener httpResponseListener;
@@ -141,6 +141,11 @@ public class HttpClientRequestBuilder implements HttpRequestBuilder, HttpRequest
         return new HttpClientRequestBuilder(httpMethod, UnpooledByteBufAllocator.DEFAULT, 3);
     }
 
+    public HttpRequestBuilder withFuture(HttpRequestFuture<String> httpRequestFuture) {
+        this.httpRequestFuture = httpRequestFuture;
+        return this;
+    }
+
     @Override
     public HttpRequestBuilder setHttp1() {
         this.httpVersion = HttpVersion.HTTP_1_1;
@@ -377,12 +382,11 @@ public class HttpClientRequestBuilder implements HttpRequestBuilder, HttpRequest
         if (httpResponseListener == null) {
             httpResponseListener = httpRequestContext;
         }
-        httpRequestContext = new HttpRequestContext(uri, httpRequest, streamId,
+        httpRequestContext = new HttpRequestContext(uri, httpRequest,
-                new AtomicBoolean(false),
+                httpRequestFuture,
-                new AtomicBoolean(false),
+                streamId,
                 timeout, System.currentTimeMillis(),
                 followRedirect, maxRedirects, new AtomicInteger(0),
-                new CountDownLatch(1),
                 httpResponseListener,
                 exceptionListener,
                 httpHeadersListener,

src/main/java/org/xbib/netty/http/client/HttpRequestContext.java

@@ -34,9 +34,9 @@ import java.util.AbstractMap;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -53,9 +53,7 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
 
     private final HttpRequest httpRequest;
 
-    private final AtomicBoolean succeeded;
+    private final HttpRequestFuture<String> httpRequestFuture;
-
-    private final AtomicBoolean failed;
 
     private final boolean followRedirect;
 
@@ -67,8 +65,6 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
 
     private final Long startTime;
 
-    private final CountDownLatch latch;
-
     private final AtomicInteger streamId;
 
     private final HttpResponseListener httpResponseListener;
@@ -91,15 +87,13 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
 
     private Map<Integer, FullHttpResponse> httpResponses;
 
-    private boolean hastimeout;
-
     private Long stopTime;
 
-    HttpRequestContext(URI uri, HttpRequest httpRequest, AtomicInteger streamId,
+    HttpRequestContext(URI uri, HttpRequest httpRequest,
-                       AtomicBoolean succeeded, AtomicBoolean failed,
+                       HttpRequestFuture<String> httpRequestFuture,
+                       AtomicInteger streamId,
                        int timeout, Long startTime,
                        boolean followRedirect, int maxRedirects, AtomicInteger redirectCount,
-                       CountDownLatch latch,
                        HttpResponseListener httpResponseListener,
                        ExceptionListener exceptionListener,
                        HttpHeadersListener httpHeadersListener,
@@ -107,15 +101,13 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
                        HttpPushListener httpPushListener) {
         this.uri = uri;
         this.httpRequest = httpRequest;
+        this.httpRequestFuture = httpRequestFuture;
         this.streamId = streamId;
-        this.succeeded = succeeded;
-        this.failed = failed;
         this.timeout = timeout;
         this.startTime = startTime;
         this.followRedirect = followRedirect;
         this.maxRedirects = maxRedirects;
         this.redirectCount = redirectCount;
-        this.latch = latch;
         this.httpResponseListener = httpResponseListener;
         this.exceptionListener = exceptionListener;
         this.httpHeadersListener = httpHeadersListener;
@@ -133,16 +125,13 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
     HttpRequestContext(URI uri, HttpRequest httpRequest, HttpRequestContext httpRequestContext) {
         this.uri = uri;
         this.httpRequest = httpRequest;
+        this.httpRequestFuture = httpRequestContext.httpRequestFuture;
         this.streamId = httpRequestContext.streamId;
-        this.succeeded = httpRequestContext.succeeded;
-        this.failed = httpRequestContext.failed;
-        this.failed.lazySet(false); // reset
         this.timeout = httpRequestContext.timeout;
         this.startTime = httpRequestContext.startTime;
         this.followRedirect = httpRequestContext.followRedirect;
         this.maxRedirects = httpRequestContext.maxRedirects;
         this.redirectCount = httpRequestContext.redirectCount;
-        this.latch = httpRequestContext.latch;
         this.httpResponseListener = httpRequestContext.httpResponseListener;
         this.exceptionListener = httpRequestContext.exceptionListener;
         this.httpHeadersListener = httpRequestContext.httpHeadersListener;
@@ -247,11 +236,11 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
     }
 
     public boolean isSucceeded() {
-        return succeeded.get();
+        return httpRequestFuture.isSucceeded();
     }
 
     public boolean isFailed() {
-        return failed.get();
+        return httpRequestFuture.isFailed();
     }
 
     public boolean isFollowRedirect() {
@@ -278,44 +267,36 @@ public final class HttpRequestContext implements HttpResponseListener, HttpReque
         return (startTime + timeout) - System.currentTimeMillis();
     }
 
-    public CountDownLatch getLatch() {
-        return latch;
-    }
-
     public AtomicInteger getStreamId() {
         return streamId;
     }
 
-    public HttpRequestContext get() throws InterruptedException {
+    public HttpRequestContext get() throws InterruptedException, TimeoutException, ExecutionException {
-        return waitFor(DEFAULT_TIMEOUT_MILLIS, TimeUnit.SECONDS);
+        return get(DEFAULT_TIMEOUT_MILLIS, TimeUnit.SECONDS);
     }
 
-    public HttpRequestContext waitFor(long value, TimeUnit timeUnit) throws InterruptedException {
+    public HttpRequestContext get(long timeout, TimeUnit timeUnit)
-        this.hastimeout = latch.await(value, timeUnit);
+            throws InterruptedException, TimeoutException, ExecutionException {
+        httpRequestFuture.get(timeout, timeUnit);
         stopTime = System.currentTimeMillis();
         return this;
     }
 
-    public boolean isTimeout() {
-        return hastimeout;
-    }
-
     public void success(String reason) {
         logger.log(Level.FINE, () -> "success because of " + reason);
-        if (succeeded.compareAndSet(false, true)) {
+        httpRequestFuture.success(reason);
-            latch.countDown();
-        }
     }
 
     public void fail(String reason) {
-        logger.log(Level.FINE, () -> "failed because of " + reason);
+        fail(new IllegalStateException(reason));
-        IllegalStateException exception = new IllegalStateException(reason);
+    }
+
+    public void fail(Exception exception) {
+        logger.log(Level.FINE, () -> "failed because of " + exception.getMessage());
         if (exceptionListener != null) {
             exceptionListener.onException(exception);
         }
-        if (failed.compareAndSet(false, true)) {
+        httpRequestFuture.fail(exception);
-            latch.countDown();
-        }
     }
 
     @Override

src/main/java/org/xbib/netty/http/client/HttpRequestDefaults.java

@@ -37,4 +37,6 @@ public interface HttpRequestDefaults {
     int DEFAULT_TIMEOUT_MILLIS = 5000;
 
     int DEFAULT_MAX_REDIRECT = 10;
+
+    HttpRequestFuture<String> DEFAULT_FUTURE = new HttpRequestFuture<>();
 }

src/main/java/org/xbib/netty/http/client/HttpRequestFuture.java

@@ -0,0 +1,20 @@
+package org.xbib.netty.http.client;
+
+import org.xbib.netty.http.client.util.AbstractFuture;
+
+/**
+ * A HTTP request future.
+ *
+ * @param <V> the response type parameter.
+ */
+public class HttpRequestFuture<V> extends AbstractFuture<V> {
+
+    public void success(V v) {
+        set(v);
+    }
+
+    public void fail(Exception e) {
+        setException(e);
+    }
+
+}

src/main/java/org/xbib/netty/http/client/handler/HttpClientChannelInitializer.java

@@ -142,9 +142,9 @@ public class HttpClientChannelInitializer extends ChannelInitializer<SocketChann
                         new Http2ClientUpgradeCodec(http2connectionHandler);
                 HttpClientUpgradeHandler upgradeHandler =
                         new HttpClientUpgradeHandler(http1connectionHandler, upgradeCodec, context.getMaxContentLength());
+                pipeline.addLast(upgradeHandler);
                 UpgradeRequestHandler upgradeRequestHandler =
                         new UpgradeRequestHandler();
-                pipeline.addLast(upgradeHandler);
                 pipeline.addLast(upgradeRequestHandler);
             } else {
                 pipeline.addLast(http2connectionHandler);

src/main/java/org/xbib/netty/http/client/util/AbstractFuture.java

@@ -0,0 +1,353 @@
+package org.xbib.netty.http.client.util;
+
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.locks.AbstractQueuedSynchronizer;
+
+/**
+ * <p>
+ * An abstract implementation of the {@link Future} interface.  This class
+ * is an abstraction of {@link java.util.concurrent.FutureTask} to support use
+ * for tasks other than {@link Runnable}s.  It uses an
+ * {@link AbstractQueuedSynchronizer} to deal with concurrency issues and
+ * guarantee thread safety.  It could be used as a base class to
+ * {@code FutureTask}, or any other implementor of the {@code Future} interface.
+ * </p>
+ *
+ * <p>
+ * This class implements all methods in {@code Future}.  Subclasses should
+ * provide a way to set the result of the computation through the protected
+ * methods {@link #set(Object)}, {@link #setException(Exception)}, or
+ * {@link #cancel()}.  If subclasses want to implement cancellation they can
+ * override the {@link #cancel(boolean)} method with a real implementation, the
+ * default implementation doesn't support cancellation.
+ * </p>
+ *
+ * <p>
+ * The state changing methods all return a boolean indicating success or
+ * failure in changing the future's state.  Valid states are running,
+ * completed, failed, or cancelled.  Because this class does not implement
+ * cancellation it is left to the subclass to distinguish between created
+ * and running tasks.
+ * </p>
+ *
+ * <p>This class is taken from the Google Guava project.</p>
+ *
+ * @param <V> the future value parameter type
+ */
+public abstract class AbstractFuture<V> implements Future<V> {
+
+    /**
+     * Synchronization control.
+     */
+    private final Sync<V> sync = new Sync<>();
+
+    /**
+     * The default {@link AbstractFuture} implementation throws {@code
+     * InterruptedException} if the current thread is interrupted before or during
+     * the call, even if the value is already available.
+     *
+     * @throws InterruptedException  if the current thread was interrupted before
+     *                               or during the call (optional but recommended).
+     * @throws TimeoutException if operation timed out
+     * @throws ExecutionException if execution fails
+     */
+    @Override
+    public V get(long timeout, TimeUnit unit) throws InterruptedException,
+            TimeoutException, ExecutionException {
+        return sync.get(unit.toNanos(timeout));
+    }
+
+    /**
+     * The default {@link AbstractFuture} implementation throws {@code
+     * InterruptedException} if the current thread is interrupted before or during
+     * the call, even if the value is already available.
+     *
+     * @throws InterruptedException  if the current thread was interrupted before
+     *                               or during the call (optional but recommended).
+     * @throws ExecutionException if execution fails
+     */
+    @Override
+    public V get() throws InterruptedException, ExecutionException {
+        return sync.get();
+    }
+
+    /**
+     * Checks if the sync is not in the running state.
+     */
+    @Override
+    public boolean isDone() {
+        return sync.isDone();
+    }
+
+    /**
+     * Checks if the sync is in the cancelled state.
+     */
+    @Override
+    public boolean isCancelled() {
+        return sync.isCancelled();
+    }
+
+    public boolean isSucceeded() {
+        return sync.isSuccess();
+    }
+
+    public boolean isFailed() {
+        return sync.isFailed();
+    }
+
+    /**
+     * Default implementation of cancel that cancels the future.
+     */
+    @Override
+    public boolean cancel(boolean mayInterruptIfRunning) {
+        if (!sync.cancel()) {
+            return false;
+        }
+        done();
+        if (mayInterruptIfRunning) {
+            interruptTask();
+        }
+        return true;
+    }
+
+    /**
+     * Subclasses should invoke this method to set the result of the computation
+     * to {@code value}.  This will set the state of the future to
+     * {@link AbstractFuture.Sync#COMPLETED} and call {@link #done()} if the
+     * state was successfully changed.
+     *
+     * @param value the value that was the result of the task.
+     * @return true if the state was successfully changed.
+     */
+    protected boolean set(V value) {
+        boolean result = sync.set(value);
+        if (result) {
+            done();
+        }
+        return result;
+    }
+
+    /**
+     * Subclasses should invoke this method to set the result of the computation
+     * to an error, {@code throwable}.  This will set the state of the future to
+     * {@link AbstractFuture.Sync#COMPLETED} and call {@link #done()} if the
+     * state was successfully changed.
+     *
+     * @param exception the exception that the task failed with.
+     * @return true if the state was successfully changed.
+     */
+    protected boolean setException(Exception exception) {
+        boolean result = sync.setException(exception);
+        if (result) {
+            done();
+        }
+        return result;
+    }
+
+    /**
+     * Subclasses should invoke this method to mark the future as cancelled.
+     * This will set the state of the future to {@link
+     * AbstractFuture.Sync#CANCELLED} and call {@link #done()} if the state was
+     * successfully changed.
+     *
+     * @return true if the state was successfully changed.
+     */
+    protected final boolean cancel() {
+        boolean result = sync.cancel();
+        if (result) {
+            done();
+        }
+        return result;
+    }
+
+    /**
+     * Called by the success, failed, or cancelled methods to indicate that the
+     * value is now available and the latch can be released.  Subclasses can
+     * use this method to deal with any actions that should be undertaken when
+     * the task has completed.
+     */
+    protected void done() {
+    }
+
+    /**
+     * Subclasses can override this method to implement interruption of the
+     * future's computation. The method is invoked automatically by a successful
+     * call to {@link #cancel(boolean) cancel(true)}.
+     * The default implementation does nothing.
+     */
+    protected void interruptTask() {
+    }
+
+    /**
+     * <p>
+     * Following the contract of {@link AbstractQueuedSynchronizer} we create a
+     * private subclass to hold the synchronizer.  This synchronizer is used to
+     * implement the blocking and waiting calls as well as to handle state changes
+     * in a thread-safe manner.  The current state of the future is held in the
+     * Sync state, and the lock is released whenever the state changes to either
+     * {@link #COMPLETED} or {@link #CANCELLED}.
+     * </p>
+     * <p>
+     * To avoid races between threads doing release and acquire, we transition
+     * to the final state in two steps.  One thread will successfully CAS from
+     * RUNNING to COMPLETING, that thread will then set the result of the
+     * computation, and only then transition to COMPLETED or CANCELLED.
+     * </p>
+     * <p>
+     * We don't use the integer argument passed between acquire methods so we
+     * pass around a -1 everywhere.
+     * </p>
+     */
+    static final class Sync<V> extends AbstractQueuedSynchronizer {
+
+        private static final long serialVersionUID = -796072460488712821L;
+
+        static final int RUNNING = 0;
+        static final int COMPLETING = 1;
+        static final int COMPLETED = 2;
+        static final int CANCELLED = 4;
+
+        private V value;
+        private Exception exception;
+
+        /*
+        * Acquisition succeeds if the future is done, otherwise it fails.
+        */
+        @Override
+        protected int tryAcquireShared(int ignored) {
+            return isDone() ? 1 : -1;
+        }
+
+        /*
+        * We always allow a release to go through, this means the state has been
+        * successfully changed and the result is available.
+        */
+        @Override
+        protected boolean tryReleaseShared(int finalState) {
+            setState(finalState);
+            return true;
+        }
+
+        /**
+         * Blocks until the task is complete or the timeout expires.  Throws a
+         * {@link TimeoutException} if the timer expires, otherwise behaves like
+         * {@link #get()}.
+         */
+        V get(long nanos) throws TimeoutException, CancellationException,
+                ExecutionException, InterruptedException {
+            // Attempt to acquire the shared lock with a timeout.
+            if (!tryAcquireSharedNanos(-1, nanos)) {
+                throw new TimeoutException("Timeout waiting for task.");
+            }
+            return getValue();
+        }
+
+        /**
+         * Blocks until {@link #complete(Object, Exception, int)} has been
+         * successfully called.  Throws a {@link CancellationException} if the task
+         * was cancelled, or a {@link ExecutionException} if the task completed with
+         * an error.
+         */
+        V get() throws CancellationException, ExecutionException,
+                InterruptedException {
+            // Acquire the shared lock allowing interruption.
+            acquireSharedInterruptibly(-1);
+            return getValue();
+        }
+
+        /**
+         * Implementation of the actual value retrieval.  Will return the value
+         * on success, an exception on failure, a cancellation on cancellation, or
+         * an illegal state if the synchronizer is in an invalid state.
+         */
+        private V getValue() throws CancellationException, ExecutionException {
+            int state = getState();
+            switch (state) {
+                case COMPLETED:
+                    if (exception != null) {
+                        throw new ExecutionException(exception);
+                    } else {
+                        return value;
+                    }
+                case CANCELLED:
+                    throw new CancellationException("task was cancelled");
+                default:
+                    throw new IllegalStateException("error, synchronizer in invalid state: " + state);
+            }
+        }
+
+        /**
+         * Checks if the state is {@link #COMPLETED} or {@link #CANCELLED}.
+         */
+        boolean isDone() {
+            return (getState() & (COMPLETED | CANCELLED)) != 0;
+        }
+
+        /**
+         * Checks if the state is {@link #CANCELLED}.
+         */
+        boolean isCancelled() {
+            return getState() == CANCELLED;
+        }
+
+        boolean isSuccess() {
+            return value != null && getState() == COMPLETED;
+        }
+
+        boolean isFailed() {
+            return exception != null && getState() == COMPLETED;
+        }
+
+        /**
+         * Transition to the COMPLETED state and set the value.
+         */
+        boolean set(V v) {
+            return complete(v, null, COMPLETED);
+        }
+
+        /**
+         * Transition to the COMPLETED state and set the exception.
+         */
+        boolean setException(Exception exception) {
+            return complete(null, exception, COMPLETED);
+        }
+
+        /**
+         * Transition to the CANCELLED state.
+         */
+        boolean cancel() {
+            return complete(null, null, CANCELLED);
+        }
+
+        /**
+         * Implementation of completing a task.  Either {@code v} or {@code t} will
+         * be set but not both.  The {@code finalState} is the state to change to
+         * from {@link #RUNNING}.  If the state is not in the RUNNING state we
+         * return {@code false} after waiting for the state to be set to a valid
+         * final state ({@link #COMPLETED} or {@link #CANCELLED}).
+         *
+         * @param v the value to set as the result of the computation.
+         * @param exception the exception to set as the result of the computation.
+         * @param finalState the state to transition to.
+         */
+        private boolean complete(V v, Exception exception, int finalState) {
+            boolean doCompletion = compareAndSetState(RUNNING, COMPLETING);
+            if (doCompletion) {
+                // If this thread successfully transitioned to COMPLETING, set the value
+                // and exception and then release to the final state.
+                this.value = v;
+                this.exception = exception;
+                releaseShared(finalState);
+            } else if (getState() == COMPLETING) {
+                // If some other thread is currently completing the future, block until
+                // they are done so we can guarantee completion.
+                acquireShared(-1);
+            }
+            return doCompletion;
+        }
+    }
+}

src/test/java/org/xbib/netty/http/client/test/ElasticsearchTest.java

@@ -21,6 +21,7 @@ import org.xbib.netty.http.client.HttpRequestBuilder;
 import org.xbib.netty.http.client.HttpRequestContext;
 
 import java.io.IOException;
+import java.net.ConnectException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
@@ -31,6 +32,8 @@ import java.util.logging.LogManager;
 import java.util.logging.Logger;
 import java.util.logging.SimpleFormatter;
 
+import static org.junit.Assert.assertTrue;
+
 /**
  */
 public class ElasticsearchTest {
@@ -56,7 +59,8 @@ public class ElasticsearchTest {
     public void testElasticsearchCreateDocument() throws Exception {
         HttpClient httpClient = HttpClient.builder()
                 .build();
-        HttpRequestContext requestContext = httpClient.preparePut()
+        try {
+            HttpRequestContext requestContext = httpClient.preparePut()
                 .setURL("http://localhost:9200/test/test/1")
                 .json("{\"text\":\"Hello World\"}")
                 .onResponse(fullHttpResponse -> {
@@ -66,15 +70,20 @@ public class ElasticsearchTest {
                 .onException(e -> logger.log(Level.SEVERE, e.getMessage(), e))
                 .execute()
                 .get();
+            logger.log(Level.FINE, "took = " + requestContext.took());
+        } catch (Exception exception) {
+            assertTrue(exception.getCause() instanceof ConnectException);
+            logger.log(Level.INFO, "got expected exception");
+        }
         httpClient.close();
-        logger.log(Level.FINE, "took = " + requestContext.took());
     }
 
     @Test
     public void testElasticsearchMatchQuery() throws Exception {
         HttpClient httpClient = HttpClient.builder()
                 .build();
-        HttpRequestContext requestContext = httpClient.preparePost()
+        try {
+            HttpRequestContext requestContext = httpClient.preparePost()
                 .setURL("http://localhost:9200/test/_search")
                 .json("{\"query\":{\"match\":{\"_all\":\"Hello World\"}}}")
                 .onResponse(fullHttpResponse -> {
@@ -84,8 +93,12 @@ public class ElasticsearchTest {
                 .onException(e -> logger.log(Level.SEVERE, e.getMessage(), e))
                 .execute()
                 .get();
+            logger.log(Level.FINE, "took = " + requestContext.took());
+        } catch (Exception exception) {
+            assertTrue(exception.getCause() instanceof ConnectException);
+            logger.log(Level.INFO, "got expected exception");
+        }
         httpClient.close();
-        logger.log(Level.FINE, "took = " + requestContext.took());
     }
 
     @Test
@@ -103,9 +116,14 @@ public class ElasticsearchTest {
         }
         List<HttpRequestContext> responses = new ArrayList<>();
         for (int i = 0; i < max; i++) {
-            responses.add(contexts.get(i).get());
+            try {
+                responses.add(contexts.get(i).get());
+            } catch (Exception exception) {
+                assertTrue(exception.getCause() instanceof ConnectException);
+                logger.log(Level.INFO, "got expected exception");
+            }
         }
-        for (int i = 0; i < max; i++) {
+        for (int i = 0; i < responses.size(); i++) {
             logger.log(Level.FINE, "took = " + responses.get(i).took());
         }
         httpClient.close();

src/test/java/org/xbib/netty/http/client/test/ExceptionTest.java

@@ -18,6 +18,7 @@ package org.xbib.netty.http.client.test;
 import org.junit.Test;
 import org.xbib.netty.http.client.HttpClient;
 
+import java.net.ConnectException;
 import java.nio.charset.StandardCharsets;
 import java.util.logging.ConsoleHandler;
 import java.util.logging.Handler;
@@ -26,6 +27,8 @@ import java.util.logging.LogManager;
 import java.util.logging.Logger;
 import java.util.logging.SimpleFormatter;
 
+import static org.junit.Assert.assertTrue;
+
 /**
  */
 public class ExceptionTest {
@@ -54,15 +57,20 @@ public class ExceptionTest {
 
         HttpClient httpClient = HttpClient.builder()
                 .build();
-        httpClient.prepareGet()
+        try {
-                .setURL("http://localhost:1234")
+            httpClient.prepareGet()
-                .onResponse(fullHttpResponse -> {
+                    .setURL("http://localhost:1234")
-                    String response = fullHttpResponse.content().toString(StandardCharsets.UTF_8);
+                    .onResponse(fullHttpResponse -> {
-                    logger.log(Level.INFO, "status = " + fullHttpResponse.status() + " response body = " + response);
+                        String response = fullHttpResponse.content().toString(StandardCharsets.UTF_8);
-                })
+                        logger.log(Level.INFO, "status = " + fullHttpResponse.status() + " response body = " + response);
-                .onException(e -> logger.log(Level.SEVERE, e.getMessage(), e))
+                    })
-                .execute()
+                    .onException(e -> logger.log(Level.SEVERE, e.getMessage(), e))
-                .get();
+                    .execute()
+                    .get();
+        } catch (Exception exception) {
+            assertTrue(exception.getCause() instanceof ConnectException);
+            logger.log(Level.INFO, "got expected exception");
+        }
         httpClient.close();
     }
 }

src/test/java/org/xbib/netty/http/client/test/IndexHbzTest.java

@@ -52,6 +52,7 @@ public class IndexHbzTest {
 
     private static final Logger logger = Logger.getLogger("");
 
+    @Test
     public void testIndexHbz() throws Exception {
         HttpClient httpClient = HttpClient.builder()
                 .build();