content: /*
   * Copyright 2021-2024 Aklivity Inc.
   *
   * Aklivity 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 io.aklivity.zilla.runtime.binding.tcp.internal.streams;
  
  import static io.aklivity.zilla.runtime.engine.EngineConfiguration.ENGINE_BUFFER_SLOT_CAPACITY;
  import static java.net.StandardSocketOptions.SO_REUSEADDR;
  import static java.util.concurrent.TimeUnit.SECONDS;
  import static org.junit.Assert.assertEquals;
  import static org.junit.rules.RuleChain.outerRule;
  
  import java.net.InetSocketAddress;
  import java.nio.ByteBuffer;
  import java.nio.channels.ServerSocketChannel;
  import java.nio.channels.SocketChannel;
  
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.DisableOnDebug;
  import org.junit.rules.TestRule;
  import org.junit.rules.Timeout;
  
  import io.aklivity.k3po.runtime.junit.annotation.Specification;
  import io.aklivity.k3po.runtime.junit.rules.K3poRule;
  import io.aklivity.zilla.runtime.engine.test.EngineRule;
  import io.aklivity.zilla.runtime.engine.test.annotation.Configuration;
  
  public class ClientLimitsIT
  {
      private final K3poRule k3po = new K3poRule()
          .addScriptRoot("client", "io/aklivity/zilla/specs/binding/tcp/streams/application/rfc793");
  
      private final TestRule timeout = new DisableOnDebug(new Timeout(5, SECONDS));
  
      private final EngineRule engine = new EngineRule()
          .directory("target/zilla-itests")
          .countersBufferCapacity(4096)
          .configure(ENGINE_BUFFER_SLOT_CAPACITY, 16)
          .configurationRoot("io/aklivity/zilla/specs/binding/tcp/config")
          .clean();
  
      @Rule
      public final TestRule chain = outerRule(engine).around(k3po).around(timeout);
  
      @Test
      @Configuration("client.host.yaml")
      @Specification({
          "${client}/client.sent.data.received.reset/client"
      })
      public void shouldResetWhenWindowExceeded() throws Exception
      {
          try (ServerSocketChannel server = ServerSocketChannel.open())
          {
              server.setOption(SO_REUSEADDR, true);
              server.bind(new InetSocketAddress("127.0.0.1", 12345));
  
              k3po.start();
  
              try (SocketChannel channel = server.accept())
              {
                  int len;
                  ByteBuffer buf = ByteBuffer.allocate(256);
  
                  len = channel.read(buf);
  
                  assertEquals(-1, len);
  
                  k3po.finish();
              }
          }
      }
  }
  