Added an extra step to the datagram negotation process. Before

the server starts sending datagrams willy-nilly, it must wait for 
a (reliable) go-ahead from the client.  Otherwise, it's possible 
that the server may be successfully receiving datagrams but not 
sending them.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5792 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/net/TransmitDatagramsRequest.java

@@ -0,0 +1,34 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.presents.net;
+
+/**
+ * Notifies the server that we would like it to send us datagrams.
+ */
+public class TransmitDatagramsRequest extends UpstreamMessage
+{
+    @Override
+    public String toString ()
+    {
+        return "[type=TRANSMIT_DATAGRAMS, msgid=" + messageId + "]";
+    }
+}