cvs commit: jakarta-commons/httpclient/src/examples CustomHttpConnection.java

[ol...@apache.org]

olegk       2003/01/25 11:24:40

  Added:       httpclient/src/examples CustomHttpConnection.java
  Log:
  Custom HTTP connection example by Armando Anton
  
  Revision  Changes    Path
  1.1                  jakarta-commons/httpclient/src/examples/CustomHttpConnection.java
  
  Index: CustomHttpConnection.java
  ===================================================================
  /*
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999-2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "HttpClient", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * 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/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */
  
  import org.apache.commons.httpclient.HttpConnection;
  import org.apache.commons.httpclient.HttpState;
  import org.apache.commons.httpclient.HttpStatus;
  import org.apache.commons.httpclient.HttpMethod;
  import org.apache.commons.httpclient.URI;
  import org.apache.commons.httpclient.UsernamePasswordCredentials;
  import org.apache.commons.httpclient.protocol.Protocol; 
  import org.apache.commons.httpclient.methods.GetMethod;
  import org.apache.commons.httpclient.ConnectMethod;
  
  /**
   * This example demonstrates how to establishing connection to an HTTP server 
   * when higher level of control is desired
   * 
   * @author Armando Anton
   * @author Oleg Kalnichevski
   */
  
  public class CustomHttpConnection
  {
  	public static void main(String[] args) throws Exception
  	{
          if (args.length != 1)
          {
              System.err.println("Usage: java CustomHttpConnection <url>");
              System.err.println("<url> The url of a webpage");
  			System.exit(1);
  		}
  		
          URI uri = new URI(args[0].toCharArray()); // i like this constructor :)
  
  		String schema = uri.getScheme();
  		if ((schema == null) || (schema.equals("")))
  		{
  			schema = "http";
  		}
  		Protocol protocol = Protocol.getProtocol(schema);
  
          HttpState state = new HttpState();
  		
          HttpMethod method = new GetMethod(uri.toString());
          String host = uri.getHost();
          int port = uri.getPort();
  
          HttpConnection connection = new HttpConnection(host, port, protocol);
  
          connection.setProxyHost(System.getProperty("http.proxyHost"));
          connection.setProxyPort( Integer.parseInt(System.getProperty("http.proxyPort","80")));
          
          if (System.getProperty("http.proxyUserName") != null)
          {
          	state.setProxyCredentials(null, 
          	  new UsernamePasswordCredentials(
          	    System.getProperty("http.proxyUserName"),
          	    System.getProperty("http.proxyPassword")));
          }
  
          if (connection.isProxied() && connection.isSecure()) {
              method = new ConnectMethod(method);
          }
          method.execute(state, connection);
  
  	    if (method.getStatusCode() == HttpStatus.SC_OK) {
  	        System.out.println(method.getResponseBodyAsString());
  	    } else {
  	    	System.out.println("Unexpected failure: " + method.getStatusLine().toString());
  	    }
  	    method.releaseConnection();
  	}
  }
  
  
  

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