Added an option to bind the datagram socket to a specific

hostname, in hopes of fixing the issue with receiving datagrams 
from the staging server.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5793 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/net/ConnectionManager.java

@@ -109,9 +109,20 @@ public class ConnectionManager extends LoopingThread
      */
     public void init (int[] ports, int[] datagramPorts)
         throws IOException
+    {
+        init(ports, datagramPorts, null);
+    }
+
+    /**
+     * Constructs and initialized a connection manager (binding socket on which it will listen for
+     * client connections to each of the specified ports).
+     */
+    public void init (int[] ports, int[] datagramPorts, String datagramHostname)
+        throws IOException
     {
         _ports = ports;
         _datagramPorts = datagramPorts;
+        _datagramHostname = datagramHostname;
         _selector = SelectorProvider.provider().openSelector();
 
         // create our stats record
@@ -390,7 +401,8 @@ public class ConnectionManager extends LoopingThread
                 _datagramChannel = DatagramChannel.open();
                 _datagramChannel.configureBlocking(false);
 
-                InetSocketAddress isa = new InetSocketAddress(port);
+                InetSocketAddress isa = (_datagramHostname == null) ?
+                    new InetSocketAddress(port) : new InetSocketAddress(_datagramHostname, port);
                 _datagramChannel.socket().bind(isa);
                 registerChannel(_datagramChannel);
                 log.info("Server accepting datagrams on " + isa + ".");
@@ -1169,6 +1181,7 @@ public class ConnectionManager extends LoopingThread
     @Inject(optional=true) protected Authenticator _author = new DummyAuthenticator();
 
     protected int[] _ports, _datagramPorts;
+    protected String _datagramHostname;
     protected Selector _selector;
     protected ServerSocketChannel _ssocket;
     protected DatagramChannel _datagramChannel;