Ant example source code file (ProxyDiagnostics.java)

This example Ant source code file (ProxyDiagnostics.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

default_destination, inetaddress, inetsocketaddress, inetsocketaddress, net, network, proxy, proxydiagnostics, proxydiagnostics, proxyselector, string, string, stringbuffer, uri, uri, urisyntaxexception, util

The ProxyDiagnostics.java source code

/*
 *  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.
 *
 */

package org.apache.tools.ant.util.java15;

import org.apache.tools.ant.BuildException;

import java.net.ProxySelector;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.Proxy;
import java.net.SocketAddress;
import java.net.InetSocketAddress;
import java.net.InetAddress;
import java.util.List;
import java.util.Iterator;

/**
 * This class exists to create a string that tells diagnostics about the current
 * state of proxy diagnostics.
 * It does this in its toString operator.
 * Java1.5+ is needed to compile this class; its interface is classic typeless
 * Java.
 * @since Ant 1.7
 */
public class ProxyDiagnostics {

    private String destination;

    private URI destURI;

    /** {@value} */
    public static final String DEFAULT_DESTINATION = "http://ant.apache.org/";

    /**
     * create a diagnostics binding for a specific URI
     * @param destination dest to bind to
     * @throws BuildException if the URI is malformed.
     */
    public ProxyDiagnostics(String destination) {
        this.destination = destination;
        try {
            this.destURI = new URI(destination);
        } catch (URISyntaxException e) {
            throw new BuildException(e);
        }
    }

    /**
     * create a proxy diagnostics tool bound to
     * {@link #DEFAULT_DESTINATION}
     */
    public ProxyDiagnostics() {
        this(DEFAULT_DESTINATION);
    }

    /**
     * Get the diagnostics for proxy information.
     * @return the information.
     */
    public String toString() {
        ProxySelector selector = ProxySelector.getDefault();
        List list = selector.select(destURI);
        StringBuffer result = new StringBuffer();
        Iterator proxies = list.listIterator();
        while (proxies.hasNext()) {
            Proxy proxy = (Proxy) proxies.next();
            SocketAddress address = proxy.address();
            if (address == null) {
                result.append("Direct connection\n");
            } else {
                result.append(proxy.toString());
                if (address instanceof InetSocketAddress) {
                    InetSocketAddress ina = (InetSocketAddress) address;
                    result.append(' ');
                    result.append(ina.getHostName());
                    result.append(':');
                    result.append(ina.getPort());
                    if (ina.isUnresolved()) {
                        result.append(" [unresolved]");
                    } else {
                        InetAddress addr = ina.getAddress();
                        result.append(" [");
                        result.append(addr.getHostAddress());
                        result.append(']');
                    }
                }
                result.append('\n');
            }
        }
        return result.toString();
    }



}