package org.apache.maven.wagon.tck.http.fixture;
   
   /*
    * 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.
   */
  
  import java.io.IOException;
  import java.util.Collections;
  import java.util.Enumeration;
  
  import javax.servlet.Filter;
  import javax.servlet.FilterChain;
  import javax.servlet.FilterConfig;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  import javax.servlet.http.HttpServletRequest;
  
  import org.apache.log4j.Logger;
  
  public class ProxyConnectionVerifierFilter
      implements Filter
  {
      private static Logger logger = Logger.getLogger( ProxyConnectionVerifierFilter.class );
  
      public void destroy()
      {
      }
  
      @SuppressWarnings( "unchecked" )
      public void doFilter( final ServletRequest req, final ServletResponse resp, final FilterChain chain )
          throws IOException, ServletException
      {
          HttpServletRequest request = (HttpServletRequest) req;
          // HttpServletResponse response = (HttpServletResponse) resp;
  
          Enumeration<String> kEn = request.getHeaderNames();
          for ( String key : Collections.list( kEn ) )
          {
              if ( key == null )
              {
                  continue;
              }
  
              Enumeration<String> vEn = request.getHeaders( key );
              if ( vEn != null )
              {
                  for ( String val : Collections.list( vEn ) )
                  {
                      logger.info( key + ": " + val );
                  }
              }
          }
  
          chain.doFilter( req, resp );
      }
  
      public void init( final FilterConfig filterConfig )
          throws ServletException
      {
      }
  
  }