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1   // ========================================================================
2   // Copyright 2004-2010 Mort Bay Consulting Pty. Ltd.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses.
12  // ========================================================================
13  
14  package org.eclipse.jetty.server.session;
15  
16  import java.io.IOException;
17  import java.io.PrintWriter;
18  import java.util.Random;
19  
20  import javax.servlet.ServletException;
21  import javax.servlet.http.HttpServlet;
22  import javax.servlet.http.HttpServletRequest;
23  import javax.servlet.http.HttpServletResponse;
24  import javax.servlet.http.HttpSession;
25  
26  import org.eclipse.jetty.client.ContentExchange;
27  import org.eclipse.jetty.client.HttpClient;
28  import org.eclipse.jetty.http.HttpMethods;
29  import org.junit.Test;
30  
31  /**
32   * AbstractSessionMigrationTest
33   */
34  public abstract class AbstractSessionMigrationTest
35  {
36      public abstract AbstractTestServer createServer (int port);
37  
38      @Test
39      public void testSessionMigration() throws Exception
40      {
41          Random random = new Random(System.nanoTime());
42  
43          String contextPath = "";
44          String servletMapping = "/server";
45          int port1 = random.nextInt(50000) + 10000;
46          AbstractTestServer server1 = createServer(port1);
47          server1.addContext(contextPath).addServlet(TestServlet.class, servletMapping);
48          server1.start();
49          try
50          {
51              int port2 = random.nextInt(50000) + 10000;
52              AbstractTestServer server2 = createServer(port2);
53              server2.addContext(contextPath).addServlet(TestServlet.class, servletMapping);
54              server2.start();
55              try
56              {
57                  HttpClient client = new HttpClient();
58                  client.setConnectorType(HttpClient.CONNECTOR_SOCKET);
59                  client.start();
60                  try
61                  {
62                      // Perform one request to server1 to create a session
63                      int value = 1;
64                      ContentExchange exchange1 = new ContentExchange(true);
65                      exchange1.setMethod(HttpMethods.POST);
66                      exchange1.setURL("http://localhost:" + port1 + contextPath + servletMapping + "?action=set&value=" + value);
67                      client.send(exchange1);
68                      exchange1.waitForDone();
69                      assert exchange1.getResponseStatus() == HttpServletResponse.SC_OK;
70                      String sessionCookie = exchange1.getResponseFields().getStringField("Set-Cookie");
71                      assert sessionCookie != null;
72                      // Mangle the cookie, replacing Path with $Path, etc.
73                      sessionCookie = sessionCookie.replaceFirst("(\\W)(P|p)ath=", "$1\\$Path=");
74  
75                      // Perform a request to server2 using the session cookie from the previous request
76                      // This should migrate the session from server1 to server2.
77                      ContentExchange exchange2 = new ContentExchange(true);
78                      exchange2.setMethod(HttpMethods.GET);
79                      exchange2.setURL("http://localhost:" + port2 + contextPath + servletMapping + "?action=get");
80                      exchange2.getRequestFields().add("Cookie", sessionCookie);
81                      client.send(exchange2);
82                      exchange2.waitForDone();
83                      assert exchange2.getResponseStatus() == HttpServletResponse.SC_OK;
84                      String response = exchange2.getResponseContent();
85                      assert response.trim().equals(String.valueOf(value));
86                  }
87                  finally
88                  {
89                      client.stop();
90                  }
91              }
92              finally
93              {
94                  server2.stop();
95              }
96          }
97          finally
98          {
99              server1.stop();
100         }
101     }
102 
103     public static class TestServlet extends HttpServlet
104     {
105         @Override
106         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
107         {
108             doPost(request, response);
109         }
110 
111         @Override
112         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
113         {
114             HttpSession session = request.getSession(false);
115             if (session == null) session = request.getSession(true);
116 
117             String action = request.getParameter("action");
118             if ("set".equals(action))
119             {
120                 int value = Integer.parseInt(request.getParameter("value"));
121                 session.setAttribute("value", value);
122                 PrintWriter writer = response.getWriter();
123                 writer.println(value);
124                 writer.flush();
125             }
126             else if ("get".equals(action))
127             {
128                 int value = (Integer)session.getAttribute("value");
129                 PrintWriter writer = response.getWriter();
130                 writer.println(value);
131                 writer.flush();
132             }
133         }
134     }
135 }