/*
    * ====================================================================
    * 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
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http2.impl.nio.bootstrap;
  
  import java.util.concurrent.Future;
  
  import org.apache.hc.core5.annotation.Internal;
  import org.apache.hc.core5.concurrent.FutureCallback;
  import org.apache.hc.core5.function.Callback;
  import org.apache.hc.core5.function.Decorator;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncRequester;
  import org.apache.hc.core5.http.nio.AsyncClientEndpoint;
  import org.apache.hc.core5.http2.HttpVersionPolicy;
  import org.apache.hc.core5.pool.ManagedConnPool;
  import org.apache.hc.core5.reactor.IOEventHandlerFactory;
  import org.apache.hc.core5.reactor.IOReactorConfig;
  import org.apache.hc.core5.reactor.IOSession;
  import org.apache.hc.core5.reactor.IOSessionListener;
  import org.apache.hc.core5.util.Timeout;
  
  /**
   * Client side message exchange initiator capable of negotiating
   * HTTP/2 or HTTP/1.1 compatible connections.
   *
   * @since 5.0
   */
  public class H2AsyncRequester extends HttpAsyncRequester {
  
      private final HttpVersionPolicy versionPolicy;
  
      /**
       * Use {@link H2RequesterBootstrap} to create instances of this class.
       */
      @Internal
      public H2AsyncRequester(
              final HttpVersionPolicy versionPolicy,
              final IOReactorConfig ioReactorConfig,
              final IOEventHandlerFactory eventHandlerFactory,
              final Decorator<IOSession> ioSessionDecorator,
              final Callback<Exception> exceptionCallback,
              final IOSessionListener sessionListener,
              final ManagedConnPool<HttpHost, IOSession> connPool) {
          super(ioReactorConfig, eventHandlerFactory, ioSessionDecorator, exceptionCallback, sessionListener, connPool);
          this.versionPolicy = versionPolicy != null ? versionPolicy : HttpVersionPolicy.NEGOTIATE;
      }
  
      @Override
      protected Future<AsyncClientEndpoint> doConnect(
              final HttpHost host,
              final Timeout timeout,
              final Object attachment,
              final FutureCallback<AsyncClientEndpoint> callback) {
          return super.doConnect(host, timeout, attachment != null ? attachment : versionPolicy, callback);
      }
  
  }