Java proxy for specific URLs

ParosProxySelector.java

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.Proxy.Type;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.util.Collections;
import java.util.List;

import org.apache.log4j.Logger;

public class ParosProxySelector extends ProxySelector {

	private static final Logger log = Logger.getLogger(ParosProxySelector.class);
	
	private static final Proxy PAROS_PROXY, SOCKS_PROXY;
	static {
		PAROS_PROXY = new Proxy(Type.HTTP, new InetSocketAddress("localhost", 8080));
		SOCKS_PROXY = new Proxy(Type.SOCKS, new InetSocketAddress("localhost", 1080));
	}

	public static ProxySelector proxyFor(String uriBase) {
		ProxySelector existing = ProxySelector.getDefault();
		ProxySelector newProxy = new ParosProxySelector(uriBase, existing);
		ProxySelector.setDefault(newProxy);
		return newProxy;
	}
	
	private final String uriBase;
	private final ProxySelector chained;
	
	protected ParosProxySelector(String uriBase, ProxySelector chained) {
		this.uriBase = uriBase;
		this.chained = chained;
	}
	
	@Override
	public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
		log.error("Proxy failure for "+uri.toASCIIString());
	}

	@Override
	public List<Proxy> select(URI uri) {
		final String uriStr = uri.toASCIIString();
		System.err.println("ParosProxySelector.select("+uriStr+")");
		if (uriStr.contains("localhost:1080")
			|| uriStr.contains("127.0.0.1:1080")
			|| uriStr.contains("localhost:8080")
			|| uriStr.contains("127.0.0.1:8080")) {
			return Collections.singletonList(Proxy.NO_PROXY);
		}
		if (uriStr.contains(uriBase)) {
			if (uri.getScheme().equals("http")) {
				return Collections.singletonList(PAROS_PROXY);
			}
			if (uri.getScheme().equals("socket")) {
				return Collections.singletonList(SOCKS_PROXY);
			}
		}
		if (chained != null) {
			return chained.select(uri);
		}
		return Collections.singletonList(Proxy.NO_PROXY);
	}
}