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    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
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  package org.apache.hc.core5.testing.nio.extension;
  
  import java.io.IOException;
  import java.util.function.Consumer;
  
  import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncServer;
  import org.apache.hc.core5.http2.impl.nio.bootstrap.H2ServerBootstrap;
  import org.apache.hc.core5.http2.ssl.H2ServerTlsStrategy;
  import org.apache.hc.core5.io.CloseMode;
  import org.apache.hc.core5.testing.SSLTestContexts;
  import org.apache.hc.core5.testing.nio.LoggingExceptionCallback;
  import org.apache.hc.core5.testing.nio.LoggingH2StreamListener;
  import org.apache.hc.core5.testing.nio.LoggingHttp1StreamListener;
  import org.apache.hc.core5.testing.nio.LoggingIOSessionDecorator;
  import org.apache.hc.core5.testing.nio.LoggingIOSessionListener;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.extension.AfterEachCallback;
  import org.junit.jupiter.api.extension.BeforeEachCallback;
  import org.junit.jupiter.api.extension.ExtensionContext;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class H2AsyncServerResource implements BeforeEachCallback, AfterEachCallback {
  
      private static final Logger LOG = LoggerFactory.getLogger(H2AsyncServerResource.class);
  
      private final Consumer<H2ServerBootstrap> bootstrapCustomizer;
  
      private HttpAsyncServer server;
  
      public H2AsyncServerResource(final Consumer<H2ServerBootstrap> bootstrapCustomizer) {
          this.bootstrapCustomizer = bootstrapCustomizer;
      }
  
      @Override
      public void beforeEach(final ExtensionContext extensionContext) throws Exception {
          LOG.debug("Starting up test server");
  
          final H2ServerBootstrap bootstrap = H2ServerBootstrap.bootstrap()
                  .setTlsStrategy(new H2ServerTlsStrategy(SSLTestContexts.createServerSSLContext()))
                  .setStreamListener(LoggingHttp1StreamListener.INSTANCE_SERVER)
                  .setStreamListener(LoggingH2StreamListener.INSTANCE)
                  .setIOSessionDecorator(LoggingIOSessionDecorator.INSTANCE)
                  .setExceptionCallback(LoggingExceptionCallback.INSTANCE)
                  .setIOSessionListener(LoggingIOSessionListener.INSTANCE);
          bootstrapCustomizer.accept(bootstrap);
          server = bootstrap.create();
      }
  
      @Override
      public void afterEach(final ExtensionContext extensionContext) throws Exception {
          LOG.debug("Shutting down test server");
          if (server != null) {
              try {
                  server.close(CloseMode.IMMEDIATE);
              } catch (final Exception ignore) {
              }
          }
      }
  
      public HttpAsyncServer start() throws IOException {
          Assertions.assertNotNull(server);
          server.start();
          return server;
      }
  
  }