Client side message throttling. The server is configured with a hard limit, it

communicates that limit to the client which queues outgoing messages so that it
does not exceed the limit. When the throttle is changed, the server does not
apply the new throttle until the client has ACKed it to avoid edge cases where
the client is up against the limit when the throttle changes.

ActionScript side of all of this forthcoming as well as more testing.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5422 542714f4-19e9-0310-aa3c-eee0fc999fb1

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

@@ -0,0 +1,30 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2008 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 the client has received its {@link UpdateThrottleMessage}.
+ */
+public class ThrottleUpdatedMessage extends UpstreamMessage
+{
+    // nothing needed
+}

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

@@ -0,0 +1,49 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2008 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 client that its message throttle has been updated.
+ */
+public class UpdateThrottleMessage extends DownstreamMessage
+{
+    /** The number of messages allowed per throttle period. */
+    public final int messages;
+
+    /** The throttle period. */
+    public final long period;
+
+    /**
+     * Zero argument constructor used when unserializing an instance.
+     */
+    public UpdateThrottleMessage ()
+    {
+        this.messages = 0;
+        this.period = 0;
+    }
+
+    public UpdateThrottleMessage (int messages, long period)
+    {
+        this.messages = messages;
+        this.period = period;
+    }
+}