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package com.btr.proxy.selector.fixed;
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.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/*****************************************************************************
* This proxy selector is configured with a fixed proxy. This proxy will be
* returned for all URIs passed to the select method.
*
* @author Bernd Rosstauscher (proxyvole@rosstauscher.de) Copyright 2009
****************************************************************************/
public class FixedProxySelector extends ProxySelector {
private List<Proxy> proxyList;
/*************************************************************************
* Constructor
* @param proxy the proxy to use.
************************************************************************/
public FixedProxySelector(Proxy... proxy) {
super();
if (proxy.length == 0)
throw new IllegalArgumentException("Empty list was passed");
this.proxyList = Collections.unmodifiableList(Arrays.asList(proxy));
if (this.proxyList.contains(null))
throw new NullPointerException("List conains NULL proxy");
}
/*************************************************************************
* Constructor
* @param proxyHost the host name or IP address of the proxy to use.
* @param proxyPort the port of the proxy.
************************************************************************/
public FixedProxySelector(Proxy.Type type, String proxyHost, int proxyPort) {
this(new Proxy(type,
InetSocketAddress.createUnresolved(proxyHost, proxyPort)));
}
/*************************************************************************
* connectFailed
* @see java.net.ProxySelector#connectFailed(java.net.URI, java.net.SocketAddress, java.io.IOException)
************************************************************************/
@Override
public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
final List<Proxy> list = this.proxyList;
if (list.size() < 2)
return;
if (!list.get(0).address().equals(sa))
return; // We only care if the failing one is the first one in list
List<Proxy> newList = new ArrayList<>(list.size());
Proxy broken = null;
for (Proxy p : list) {
if (p.address().equals(sa)) {
broken = p;
} else {
newList.add(p);
}
}
if (broken != null) {
newList.add(broken);
}
this.proxyList = Collections.unmodifiableList(newList);
}
/*************************************************************************
* select
* @see java.net.ProxySelector#select(java.net.URI)
************************************************************************/
@Override
public List<Proxy> select(URI uri) {
return this.proxyList;
}
public Type getType() {
return this.proxyList.get(0).type();
}
}
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