/**
    * Copyright (c) 2002-2015, JWebUnit team.
    *
    * This file is part of JWebUnit.
    *
    * JWebUnit is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Lesser General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
   *
   * JWebUnit is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with JWebUnit.  If not, see <http://www.gnu.org/licenses/>.
   */
  package net.sourceforge.jwebunit.tests.util;
  
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.util.Iterator;
  import java.util.List;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.fileupload.FileItem;
  import org.apache.commons.fileupload.FileItemFactory;
  import org.apache.commons.fileupload.FileUploadException;
  import org.apache.commons.fileupload.disk.DiskFileItemFactory;
  import org.apache.commons.fileupload.servlet.ServletFileUpload;
  
  /**
   * Servlet to dump HTTP headers received by server.
   * @author henryju
   *
   */
  public class HeadersServlet extends HttpServlet {
  
      private static final long serialVersionUID = 1L;
  
      protected void doGet(HttpServletRequest request,
              HttpServletResponse response) throws ServletException, IOException {
          doPost(request, response);
      }
  
      protected void doPost(HttpServletRequest request,
              HttpServletResponse response) throws ServletException, IOException {
          response.setContentType("text/html");
          PrintWriter out = response.getWriter();
          out.write(HtmlHelper.getStart("Received headers"));
          out.write("<h1>Received headers</h1>\n<p>Headers are:<br/>");
          /*
           * Prints headers as name=[value] separated
           * by <BR/>
           */
          java.util.Enumeration headers = request.getHeaderNames();
          for (; headers.hasMoreElements();) {
              String h = headers.nextElement().toString();
              String v = request.getHeader(h);
              out.write(h + "=[" + v);
              if (headers.hasMoreElements()) {
              	out.write("]<br/>\n");
              }
          }
          out.write("]</p>\n");
          String ref = request.getHeader("Referer");
          if (ref == null) {
              if (request.getParameterValues("myReferer") != null) {
                  ref = request.getParameterValues("myReferer")[0];
              }
          }
          out.write(HtmlHelper.getLinkParagraph("return", ref));
          out.write(HtmlHelper.getEnd());
      }
  
  }