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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.client5.testing.extension.async;
  
  import org.apache.hc.client5.http.config.ConnectionConfig;
  import org.apache.hc.client5.http.config.TlsConfig;
  import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
  import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
  import org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager;
  import org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManagerBuilder;
  import org.apache.hc.client5.http.ssl.DefaultClientTlsStrategy;
  import org.apache.hc.client5.testing.SSLTestContexts;
  import org.apache.hc.core5.http.config.Http1Config;
  import org.apache.hc.core5.http.nio.ssl.TlsStrategy;
  import org.apache.hc.core5.http2.config.H2Config;
  import org.apache.hc.core5.reactor.IOReactorConfig;
  import org.apache.hc.core5.util.Timeout;
  
  final class MinimalTestClientBuilder implements TestAsyncClientBuilder {
  
      private final PoolingAsyncClientConnectionManagerBuilder connectionManagerBuilder;
  
      private Timeout timeout;
      private TlsStrategy tlsStrategy;
      private Http1Config http1Config;
      private H2Config h2Config;
  
      public MinimalTestClientBuilder() {
          this.connectionManagerBuilder = PoolingAsyncClientConnectionManagerBuilder.create();
      }
  
      @Override
      public ClientProtocolLevel getProtocolLevel() {
          return ClientProtocolLevel.MINIMAL;
      }
  
      @Override
      public TestAsyncClientBuilder setTimeout(final Timeout timeout) {
          this.timeout = timeout;
          return this;
      }
  
      @Override
      public TestAsyncClientBuilder setTlsStrategy(final TlsStrategy tlsStrategy) {
          this.tlsStrategy = tlsStrategy;
          return this;
      }
  
      @Override
      public TestAsyncClientBuilder setDefaultTlsConfig(final TlsConfig tlsConfig) {
          this.connectionManagerBuilder.setDefaultTlsConfig(tlsConfig);
          return this;
      }
  
      @Override
      public TestAsyncClientBuilder setHttp1Config(final Http1Config http1Config) {
          this.http1Config = http1Config;
          return this;
      }
  
      @Override
      public TestAsyncClientBuilder setH2Config(final H2Config h2Config) {
          this.h2Config = h2Config;
          return this;
      }
  
      @Override
      public TestAsyncClient build() throws Exception {
          final PoolingAsyncClientConnectionManager connectionManager = connectionManagerBuilder
                  .setTlsStrategy(tlsStrategy != null ? tlsStrategy : new DefaultClientTlsStrategy(SSLTestContexts.createClientSSLContext()))
                  .setDefaultConnectionConfig(ConnectionConfig.custom()
                          .setSocketTimeout(timeout)
                          .setConnectTimeout(timeout)
                          .build())
                 .build();
         final CloseableHttpAsyncClient client = HttpAsyncClients.createMinimal(
                         h2Config,
                         http1Config,
                         IOReactorConfig.custom()
                                 .setSoTimeout(timeout)
                                 .build(),
                 connectionManager);
         return new TestAsyncClient(client, connectionManager);
     }
 
 }