/*
    * ====================================================================
    * 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.http.nio.integration;
  
  import java.net.ServerSocket;
  import java.net.Socket;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.Future;
  
  import org.apache.http.Consts;
  import org.apache.http.HttpException;
  import org.apache.http.HttpHost;
  import org.apache.http.HttpRequest;
  import org.apache.http.HttpResponse;
  import org.apache.http.HttpVersion;
  import org.apache.http.config.ConnectionConfig;
  import org.apache.http.impl.nio.pool.BasicNIOConnFactory;
  import org.apache.http.message.BasicHttpRequest;
  import org.apache.http.nio.testserver.HttpClientNio;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  /**
   * Tests for handling out of sequence responses.
   */
  public class TestClientOutOfSequenceResponse {
  
      private ServerSocket server;
      private HttpClientNio client;
  
      @Before
      public void setup() throws Exception {
          server = new ServerSocket(0, 1);
          client = new HttpClientNio(new BasicNIOConnFactory(ConnectionConfig.DEFAULT));
      }
  
      @After
      public void cleanup() throws Exception {
          if (client != null) {
              client.shutdown();
          }
          if (server != null) {
              server.close();
          }
      }
  
      @Test
      public void testOutOfSequenceResponse() throws Exception {
          client.setMaxPerRoute(1);
          client.setMaxTotal(1);
  
          client.start();
          final HttpHost target = new HttpHost("localhost", server.getLocalPort());
          final HttpRequest get1 = new BasicHttpRequest("GET", "/", HttpVersion.HTTP_1_1);
          final Future<HttpResponse> future1 = client.execute(target, get1);
          final HttpRequest get2 = new BasicHttpRequest("GET", "/", HttpVersion.HTTP_1_1);
          final Future<HttpResponse> future2 = client.execute(target, get2);
  
          final Socket socket = server.accept();
          Thread.sleep(100);
          for (int i = 0; i < 3; ++i) {
              socket.getOutputStream().write((
                      "HTTP/1.1 200 OK\r\n" +
                      "Content-Length: 0\r\n" +
                      "Connection: keep-alive\r\n\r\n").getBytes(Consts.UTF_8));
              socket.getOutputStream().flush();
          }
  
          final HttpResponse response1 = future1.get();
          Assert.assertEquals(200, response1.getStatusLine().getStatusCode());
  
          try {
             final HttpResponse response2 = future2.get();
             Assert.assertEquals(200, response2.getStatusLine().getStatusCode());
         } catch (final ExecutionException ex) {
             Assert.assertTrue(ex.getCause() instanceof HttpException);
         }
     }
 
 }