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    * Licensed to the Apache Software Foundation (ASF) under one
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    * 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,
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   * "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
   * information on the Apache Software Foundation, please see
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  package org.apache.hc.core5.testing.nio;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  import java.util.concurrent.Future;
  
  import org.apache.hc.core5.function.Supplier;
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.Header;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.HttpRequest;
  import org.apache.hc.core5.http.HttpResponse;
  import org.apache.hc.core5.http.HttpStatus;
  import org.apache.hc.core5.http.Message;
  import org.apache.hc.core5.http.Method;
  import org.apache.hc.core5.http.URIScheme;
  import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncRequester;
  import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncServer;
  import org.apache.hc.core5.http.impl.routing.RequestRouter;
  import org.apache.hc.core5.http.nio.AsyncEntityProducer;
  import org.apache.hc.core5.http.nio.AsyncFilterChain;
  import org.apache.hc.core5.http.nio.AsyncPushProducer;
  import org.apache.hc.core5.http.nio.AsyncServerExchangeHandler;
  import org.apache.hc.core5.http.nio.entity.StringAsyncEntityConsumer;
  import org.apache.hc.core5.http.nio.entity.StringAsyncEntityProducer;
  import org.apache.hc.core5.http.nio.support.BasicRequestProducer;
  import org.apache.hc.core5.http.nio.support.BasicResponseConsumer;
  import org.apache.hc.core5.http2.HttpVersionPolicy;
  import org.apache.hc.core5.reactor.IOReactorConfig;
  import org.apache.hc.core5.reactor.ListenerEndpoint;
  import org.apache.hc.core5.testing.nio.extension.H2AsyncRequesterResource;
  import org.apache.hc.core5.testing.nio.extension.H2AsyncServerResource;
  import org.apache.hc.core5.util.Timeout;
  import org.hamcrest.CoreMatchers;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.RegisterExtension;
  
  public abstract class H2ServerBootstrapFiltersTest {
  
      private static final Timeout TIMEOUT = Timeout.ofMinutes(1);
  
      @RegisterExtension
      private final H2AsyncServerResource serverResource = new H2AsyncServerResource((bootstrap) -> bootstrap
              .setVersionPolicy(HttpVersionPolicy.NEGOTIATE)
              .setIOReactorConfig(
                      IOReactorConfig.custom()
                              .setSoTimeout(TIMEOUT)
                              .build())
              .setRequestRouter(RequestRouter.<Supplier<AsyncServerExchangeHandler>>builder()
                          .addRoute(RequestRouter.LOCAL_AUTHORITY, "*", () -> new EchoHandler(2048))
                          .resolveAuthority(RequestRouter.LOCAL_AUTHORITY_RESOLVER)
                          .build())
              .addFilterLast("test-filter", (request, entityDetails, context, responseTrigger, chain) ->
                      chain.proceed(request, entityDetails, context, new AsyncFilterChain.ResponseTrigger() {
  
                          @Override
                          public void sendInformation(
                                  final HttpResponse response) throws HttpException, IOException {
                              responseTrigger.sendInformation(response);
                          }
  
                          @Override
                          public void submitResponse(
                                  final HttpResponse response,
                                  final AsyncEntityProducer entityProducer) throws HttpException, IOException {
                              response.setHeader("X-Test-Filter", "active");
                              responseTrigger.submitResponse(response, entityProducer);
                          }
  
                         @Override
                         public void pushPromise(
                                 final HttpRequest promise,
                                 final AsyncPushProducer responseProducer) throws HttpException, IOException {
                             responseTrigger.pushPromise(promise, responseProducer);
                         }
 
                     })));
 
     @RegisterExtension
     private final H2AsyncRequesterResource clientResource = new H2AsyncRequesterResource(bootstrap -> bootstrap
             .setVersionPolicy(HttpVersionPolicy.NEGOTIATE)
             .setIOReactorConfig(IOReactorConfig.custom()
                     .setSoTimeout(TIMEOUT)
                     .build()));
 
     @Test
     public void testSequentialRequests() throws Exception {
         final HttpAsyncServer server = serverResource.start();
 
         final Future<ListenerEndpoint> future = server.listen(new InetSocketAddress(0), URIScheme.HTTP);
         final ListenerEndpoint listener = future.get();
         final InetSocketAddress address = (InetSocketAddress) listener.getAddress();
         final HttpAsyncRequester requester = clientResource.start();
 
         final HttpHost target = new HttpHost("http", "localhost", address.getPort());
         final Future<Message<HttpResponse, String>> resultFuture = requester.execute(
                 new BasicRequestProducer(Method.POST, target, "/stuff",
                         new StringAsyncEntityProducer("some stuff", ContentType.TEXT_PLAIN)),
                 new BasicResponseConsumer<>(new StringAsyncEntityConsumer()), TIMEOUT, null);
         final Message<HttpResponse, String> message = resultFuture.get(TIMEOUT.getDuration(), TIMEOUT.getTimeUnit());
         assertThat(message, CoreMatchers.notNullValue());
         final HttpResponse response = message.getHead();
         assertThat(response.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
         final Header testFilterHeader = response.getHeader("X-Test-Filter");
         assertThat(testFilterHeader, CoreMatchers.notNullValue());
     }
 
 }