--- a/jdk/test/java/net/Socks/SocksServer.java	Mon Mar 12 11:30:28 2012 +0000
+++ b/jdk/test/java/net/Socks/SocksServer.java	Tue Mar 13 09:33:50 2012 +0000
@@ -22,13 +22,14 @@
  */
 import java.net.*;
 import java.io.*;
+import java.util.HashMap;
 
 public class SocksServer extends Thread {
     // Some useful SOCKS constant
 
-    static final int PROTO_VERS4                = 4;
+    static final int PROTO_VERS4        = 4;
     static final int PROTO_VERS         = 5;
-    static final int DEFAULT_PORT               = 1080;
+    static final int DEFAULT_PORT       = 1080;
 
     static final int NO_AUTH            = 0;
     static final int GSSAPI             = 1;
@@ -36,28 +37,28 @@
     static final int NO_METHODS         = -1;
 
     static final int CONNECT            = 1;
-    static final int BIND                       = 2;
+    static final int BIND               = 2;
     static final int UDP_ASSOC          = 3;
 
-    static final int IPV4                       = 1;
-    static final int DOMAIN_NAME                = 3;
-    static final int IPV6                       = 4;
+    static final int IPV4               = 1;
+    static final int DOMAIN_NAME        = 3;
+    static final int IPV6               = 4;
 
     static final int REQUEST_OK         = 0;
     static final int GENERAL_FAILURE    = 1;
-    static final int NOT_ALLOWED                = 2;
+    static final int NOT_ALLOWED        = 2;
     static final int NET_UNREACHABLE    = 3;
     static final int HOST_UNREACHABLE   = 4;
-    static final int CONN_REFUSED               = 5;
-    static final int TTL_EXPIRED                = 6;
+    static final int CONN_REFUSED       = 5;
+    static final int TTL_EXPIRED        = 6;
     static final int CMD_NOT_SUPPORTED  = 7;
     static final int ADDR_TYPE_NOT_SUP  = 8;
 
     private int port;
     private ServerSocket server;
     private boolean useV4 = false;
-    private java.util.Hashtable users = new java.util.Hashtable();
-    private boolean done = false;
+    private HashMap<String,String> users = new HashMap<>();
+    private volatile boolean done = false;
     // Inner class to handle protocol with client
     // This is the bulk of the work (protocol handler)
     class ClientHandler extends Thread {
@@ -136,7 +137,7 @@
             System.err.println("User: '" + uname);
             System.err.println("PSWD: '" + password);
             if (users.containsKey(uname)) {
-                String p1 = (String) users.get(uname);
+                String p1 = users.get(uname);
                 System.err.println("p1 = " + p1);
                 if (p1.equals(password)) {
                     out.write(PROTO_VERS);
@@ -492,7 +493,12 @@
     public SocksServer(int port) throws IOException {
         this.port = port;
         server = new ServerSocket();
-        server.bind(new InetSocketAddress(port));
+        if (port == 0) {
+            server.bind(null);
+            this.port = server.getLocalPort();
+        } else {
+            server.bind(new InetSocketAddress(port));
+        }
     }
 
     public SocksServer() throws IOException {
@@ -503,8 +509,13 @@
         users.put(user, passwd);
     }
 
-    public synchronized void terminate() {
+    public int getPort() {
+        return port;
+    }
+
+    public void terminate() {
         done = true;
+        try { server.close(); } catch (IOException unused) {}
     }
 
     public void run() {

--- a/jdk/test/java/net/Socks/SocksV4Test.java	Mon Mar 12 11:30:28 2012 +0000
+++ b/jdk/test/java/net/Socks/SocksV4Test.java	Tue Mar 13 09:33:50 2012 +0000
@@ -26,23 +26,22 @@
  * @bug 4727547
  * @summary SocksSocketImpl throws NullPointerException
  * @build SocksServer
+ * @run main SocksV4Test
  */
 
 import java.net.*;
-import java.io.*;
 
 public class SocksV4Test {
-    public static void main(String[] args) throws IOException {
-        // Create a SOCKS V4 proxy on port 8888
-        SocksServer srvr = new SocksServer(8888, true);
+    public static void main(String[] args) throws Exception {
+        // Create a SOCKS V4 proxy
+        SocksServer srvr = new SocksServer(0, true);
         srvr.start();
-        System.setProperty("socksProxyHost", "localhost");
-        System.setProperty("socksProxyPort", "8888");
+        Proxy sp = new Proxy(Proxy.Type.SOCKS,
+                             new InetSocketAddress("localhost", srvr.getPort()));
         // Let's create an unresolved address
         InetSocketAddress ad = new InetSocketAddress("doesnt.exist.name", 1234);
-        Socket s = new Socket();
-        try {
-            s.connect(ad,10000);
+        try (Socket s = new Socket(sp)) {
+            s.connect(ad, 10000);
         } catch (UnknownHostException ex) {
             // OK, that's what we expected
         } catch (NullPointerException npe) {
@@ -50,7 +49,6 @@
             throw new RuntimeException("Got a NUllPointerException");
         } finally {
             srvr.terminate();
-            srvr.interrupt();
         }
     }
 }