This closes #2135

artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/broker/ProtonProtocolManager.java

@@ -45,12 +45,15 @@ import org.apache.activemq.artemis.spi.core.remoting.Acceptor;
 import org.apache.activemq.artemis.spi.core.remoting.Connection;
 
 import io.netty.channel.ChannelPipeline;
+import org.jboss.logging.Logger;
 
 /**
  * A proton protocol manager, basically reads the Proton Input and maps proton resources to ActiveMQ Artemis resources
  */
 public class ProtonProtocolManager extends AbstractProtocolManager<AMQPMessage, AmqpInterceptor, ActiveMQProtonRemotingConnection> implements NotificationListener {
 
+   private static final Logger logger = Logger.getLogger(ProtonProtocolManager.class);
+
    private static final List<String> websocketRegistryNames = Arrays.asList("amqp");
 
    private final List<AmqpInterceptor> incomingInterceptors = new ArrayList<>();
@@ -72,6 +75,9 @@ public class ProtonProtocolManager extends AbstractProtocolManager<AMQPMessage,
 
    private String saslLoginConfigScope = "amqp-sasl-gssapi";
 
+   private Long amqpIdleTimeout;
+
+
    /*
    * used when you want to treat senders as a subscription on an address rather than consuming from the actual queue for
    * the address. This can be changed on the acceptor.
@@ -115,6 +121,17 @@ public class ProtonProtocolManager extends AbstractProtocolManager<AMQPMessage,
       return false;
    }
 
+   public Long getAmqpIdleTimeout() {
+      return amqpIdleTimeout;
+   }
+
+   public ProtonProtocolManager setAmqpIdleTimeout(Long ttl) {
+      logger.debug("Setting up " + ttl + " as the connectionTtl");
+      this.amqpIdleTimeout = ttl;
+      return this;
+   }
+
+
    @Override
    public ConnectionEntry createConnectionEntry(Acceptor acceptorUsed, Connection remotingConnection) {
       AMQPConnectionCallback connectionCallback = new AMQPConnectionCallback(this, remotingConnection, server.getExecutorFactory().getExecutor(), server);
@@ -124,6 +141,14 @@ public class ProtonProtocolManager extends AbstractProtocolManager<AMQPMessage,
          ttl = server.getConfiguration().getConnectionTTLOverride();
       }
 
+      if (getAmqpIdleTimeout() != null) {
+         ttl = getAmqpIdleTimeout().longValue();
+      }
+
+      if (ttl < 0) {
+         ttl = 0;
+      }
+
       String id = server.getConfiguration().getName();
       boolean useCoreSubscriptionNaming = server.getConfiguration().isAmqpUseCoreSubscriptionNaming();
       AMQPConnectionContext amqpConnection = new AMQPConnectionContext(this, connectionCallback, id, (int) ttl, getMaxFrameSize(), AMQPConstants.Connection.DEFAULT_CHANNEL_MAX, useCoreSubscriptionNaming, server.getScheduledPool(), true, null, null);
@@ -136,7 +161,8 @@ public class ProtonProtocolManager extends AbstractProtocolManager<AMQPMessage,
 
       connectionCallback.setProtonConnectionDelegate(delegate);
 
-      ConnectionEntry entry = new ConnectionEntry(delegate, executor, System.currentTimeMillis(), ttl);
+      // connection entry only understands -1 otherwise we would see disconnects for no reason
+      ConnectionEntry entry = new ConnectionEntry(delegate, executor, System.currentTimeMillis(), ttl <= 0 ? -1 : ttl);
 
       return entry;
    }

artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/proton/AMQPConnectionContext.java

@@ -388,8 +388,11 @@ public class AMQPConnectionContext extends ProtonInitializable implements EventH
             scheduledPool.schedule(new Runnable() {
                @Override
                public void run() {
-                  long rescheduleAt = handler.tick(false);
-                  if (rescheduleAt != 0) {
+                  Long rescheduleAt = handler.tick(false);
+                  if (rescheduleAt == null) {
+                     // this mean tick could not acquire a lock, we will just retry in 10 milliseconds.
+                     scheduledPool.schedule(this, 10, TimeUnit.MILLISECONDS);
+                  } else if (rescheduleAt != 0) {
                      scheduledPool.schedule(this, rescheduleAt - TimeUnit.NANOSECONDS.toMillis(System.nanoTime()), TimeUnit.MILLISECONDS);
                   }
                }

artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/proton/handler/ProtonHandler.java

@@ -88,7 +88,7 @@ public class ProtonHandler extends ProtonInitializable implements SaslListener {
 
    public ProtonHandler(Executor flushExecutor, boolean isServer) {
       this.flushExecutor = flushExecutor;
-      this.readyListener = () -> flushExecutor.execute(() -> {
+      this.readyListener = () -> this.flushExecutor.execute(() -> {
          flush();
       });
       this.creationTime = System.currentTimeMillis();
@@ -105,8 +105,17 @@ public class ProtonHandler extends ProtonInitializable implements SaslListener {
       connection.collect(collector);
    }
 
-   public long tick(boolean firstTick) {
+   public Long tick(boolean firstTick) {
+      if (firstTick) {
+         // the first tick needs to guarantee a lock here
          lock.lock();
+      } else {
+         if (!lock.tryLock()) {
+            log.debug("Cannot hold a lock on ProtonHandler for Tick, it will retry shortly");
+            // if we can't lock the scheduler will retry in a very short period of time instead of holding the lock here
+            return null;
+         }
+      }
       try {
          if (!firstTick) {
             try {
@@ -122,7 +131,7 @@ public class ProtonHandler extends ProtonInitializable implements SaslListener {
                transport.close();
                connection.setCondition(new ErrorCondition());
             }
-            return 0;
+            return 0L;
          }
          return transport.tick(TimeUnit.NANOSECONDS.toMillis(System.nanoTime()));
       } finally {

docs/user-manual/en/amqp.md

@@ -127,3 +127,32 @@ message for later delivery:
 
 If both annotations are present in the same message then the broker will prefer
 the more specific `x-opt-delivery-time` value.
+
+## Configuring AMQP Idle Timeout
+
+It is possible to configure the AMQP Server's IDLE Timeout by setting the property amqpIdleTimeout in milliseconds on the acceptor.
+
+This will make the server to send an AMQP frame open to the client, with your configured timeout / 2.
+
+So, if you configured your AMQP Idle Timeout to be 60000, the server will tell the client to send frames every 30,000 milliseconds.
+
+
+```xml
+<acceptor name="amqp">.... ;amqpIdleTimeout=<configured-timeout>; ..... </acceptor>
+```
+
+
+### Disabling Keep alive checks
+
+if you set amqpIdleTimeout=0 that will tell clients to not sending keep alive packets towards the server. On this case
+you will rely on TCP to determine when the socket needs to be closed.
+
+```xml
+<acceptor name="amqp">.... ;amqpIdleTimeout=0; ..... </acceptor>
+```
+
+This contains a real example for configuring amqpIdleTimeout:
+
+```xml
+<acceptor name="amqp">tcp://0.0.0.0:5672?amqpIdleTimeout=0;tcpSendBufferSize=1048576;tcpReceiveBufferSize=1048576;protocols=AMQP;useEpoll=true;amqpCredits=1000;amqpMinCredits=300;directDeliver=false;batchDelay=10</acceptor>
+```

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/amqp/AmqpBrokerRequestedHearbeatsTest.java

@@ -16,6 +16,9 @@
  */
 package org.apache.activemq.artemis.tests.integration.amqp;
 
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Map;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
@@ -27,19 +30,42 @@ import org.apache.activemq.transport.amqp.client.AmqpConnectionListener;
 import org.apache.activemq.transport.amqp.client.AmqpValidator;
 import org.apache.qpid.proton.engine.Connection;
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
 
 /**
  * Test handling of heartbeats requested by the broker.
  */
-public class AmqpBrokerReuqestedHearbeatsTest extends AmqpClientTestSupport {
+@RunWith(Parameterized.class)
+public class AmqpBrokerRequestedHearbeatsTest extends AmqpClientTestSupport {
 
    private final int TEST_IDLE_TIMEOUT = 1000;
 
+   @Parameterized.Parameters(name = "useOverride={0}")
+   public static Collection<Object[]> parameters() {
+      return Arrays.asList(new Object[][] {
+         {true}, {false}
+      });
+   }
+
+   @Parameterized.Parameter(0)
+   public boolean useOverride;
+
+   @Override
+   protected void configureAMQPAcceptorParameters(Map<String, Object> params) {
+      if (!useOverride) {
+         params.put("amqpIdleTimeout", "" + TEST_IDLE_TIMEOUT);
+      }
+   }
+
+
    @Override
    protected void addConfiguration(ActiveMQServer server) {
       server.getConfiguration().setConnectionTtlCheckInterval(TEST_IDLE_TIMEOUT / 3);
+      if (useOverride) {
          server.getConfiguration().setConnectionTTLOverride(TEST_IDLE_TIMEOUT);
       }
+   }
 
    @Test(timeout = 60000)
    public void testBrokerSendsHalfConfiguredIdleTimeout() throws Exception {

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/amqp/AmqpNoHearbeatsTest.java

@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq.artemis.tests.integration.amqp;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Map;
+
+import org.apache.activemq.artemis.core.server.ActiveMQServer;
+import org.apache.activemq.transport.amqp.client.AmqpClient;
+import org.apache.activemq.transport.amqp.client.AmqpConnection;
+import org.apache.activemq.transport.amqp.client.AmqpValidator;
+import org.apache.qpid.proton.engine.Connection;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class AmqpNoHearbeatsTest extends AmqpClientTestSupport {
+
+   @Parameterized.Parameters(name = "useOverride={0}")
+   public static Collection<Object[]> parameters() {
+      return Arrays.asList(new Object[][] {
+         {true}, {false}
+      });
+   }
+
+   @Parameterized.Parameter(0)
+   public boolean useOverride;
+
+   @Override
+   protected void addConfiguration(ActiveMQServer server) {
+      if (useOverride) {
+         server.getConfiguration().setConnectionTTLOverride(0);
+      } else {
+         server.getConfiguration().setConnectionTtlCheckInterval(500);
+      }
+   }
+
+
+   @Override
+   protected void configureAMQPAcceptorParameters(Map<String, Object> params) {
+      if (!useOverride) {
+         params.put("amqpIdleTimeout", "0");
+      }
+   }
+
+
+   @Test(timeout = 60000)
+   public void testBrokerSendsHalfConfiguredIdleTimeout() throws Exception {
+      AmqpClient client = createAmqpClient();
+      assertNotNull(client);
+
+      client.setValidator(new AmqpValidator() {
+
+         @Override
+         public void inspectOpenedResource(Connection connection) {
+            assertEquals("idle timeout was not disabled", 0, connection.getTransport().getRemoteIdleTimeout());
+         }
+      });
+
+      AmqpConnection connection = addConnection(client.connect());
+      assertNotNull(connection);
+
+      connection.getStateInspector().assertValid();
+      connection.close();
+   }
+
+}