Java Tutorial/Network/Proxy

Detect Proxy Settings for Internet Connection

   <source lang="java">

import java.net.InetSocketAddress; import java.net.Proxy; import java.net.ProxySelector; import java.net.URI; import java.util.Iterator; import java.util.List; public class Main {

 public static void main(String[] args) throws Exception {
   System.setProperty("java.net.useSystemProxies", "true");
   List l = ProxySelector.getDefault().select(new URI("http://www.yahoo.ru/"));
   for (Iterator iter = l.iterator(); iter.hasNext();) {
     Proxy proxy = (Proxy) iter.next();
     System.out.println("proxy hostname : " + proxy.type());
     InetSocketAddress addr = (InetSocketAddress) proxy.address();
     if (addr == null) {
       System.out.println("No Proxy");
     } else {
       System.out.println("proxy hostname : " + addr.getHostName());
       System.out.println("proxy port : " + addr.getPort());
     }
   }
 }

}</source>