Package

Source Code of CustomHttpConnection

/*
* $Header: /home/cvs/jakarta-commons/httpclient/src/examples/Attic/CustomHttpConnection.java,v 1.3.2.1 2004/02/22 18:21:12 olegk Exp $
* $Revision: 1.3.2.1 $
* $Date: 2004/02/22 18:21:12 $
* ====================================================================
*
*  Copyright 1999-2004 The Apache Software Foundation
*
*  Licensed 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/>.
*
* [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, 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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