Cleanup websocket plugin

Update dependencies and documentation to prep for pending Openfire 4.0
release.

src/java/org/jivesoftware/openfire/session/LocalClientSession.java

@@ -896,7 +896,7 @@ public class LocalClientSession extends LocalSession implements ClientSession {
             sb.append("<session xmlns=\"urn:ietf:params:xml:ns:xmpp-session\"><optional/></session>");
 
             // Offer XEP-0198 stream management capabilities if enabled.
-            if(JiveGlobals.getBooleanProperty("stream.management.active", true)) {
+            if(JiveGlobals.getBooleanProperty(StreamManager.SM_ACTIVE, true)) {
             	sb.append(String.format("<sm xmlns='%s'/>", StreamManager.NAMESPACE_V2));
             	sb.append(String.format("<sm xmlns='%s'/>", StreamManager.NAMESPACE_V3));
             }

src/java/org/jivesoftware/openfire/streammanagement/StreamManager.java

@@ -35,6 +35,8 @@ public class StreamManager {
             packet = p;
         }
     }
+    
+    public static final String SM_ACTIVE = "stream.management.active";
 
     /**
      * Stanza namespaces

src/plugins/websocket/changelog.html

@@ -44,6 +44,12 @@
 Openfire WebSocket Plugin Changelog
 </h1>
 
+<p><b>1.1.3</b> -- January 6, 2016</p>
+
+<ul>
+    <li>Update dependencies and documentation for pending Openfire 4.0 release.</li>
+</ul>
+
 <p><b>1.1.2</b> -- December 17, 2015</p>
 
 <ul>

src/plugins/websocket/plugin.xml

@@ -8,8 +8,8 @@
     <name>Openfire WebSocket</name>
     <description>Provides WebSocket support for Openfire.</description>
     <author>Tom Evans</author>
-    <version>1.1.2</version>
-    <date>12/17/2015</date>
+    <version>1.1.3</version>
+    <date>01/06/2016</date>
     <url>https://tools.ietf.org/html/rfc7395</url>
-    <minServerVersion>3.11.0</minServerVersion>
+    <minServerVersion>4.0.0 Alpha</minServerVersion>
 </plugin>
\ No newline at end of file

src/plugins/websocket/readme.html

@@ -71,5 +71,34 @@ connector. To establish a secure WebSocket, modify the following URL as appropri
     wss://your.openfire.host:7443/ws/
 </pre>
 
+
+<h2>Configuration</h2>
+
+<p>
+The WebSocket plugin implements the Stream Management (<a href="http://xmpp.org/extensions/xep-0198.html">XEP-0198</a>) 
+"ack" capabilities introduced with Openfire 4.0. This provides assurance for XMPP packet delivery by allowing the peers
+to agree on the number of stanzas exchanged. Two system properties are available to configure this feature:
+</p>
+
+<dl>
+<dt><pre>stream.management.active</pre></dt>
+<dd>Boolean property to enable/disable stream management (default: true)</dd>
+<dt><pre>stream.management.unsolicitedAckFrequency</pre></dt>
+<dd>Integer property indicating frequency of unsolicited ack's from the server to the client (default: 0)</dd>
+</dl>
+
+<p>
+XEP-0198 allows either party (client or server) to send unsolicited ack/answer
+stanzas on a periodic basis. This implementation approximates BOSH ack behavior
+by sending unsolicited <a /> stanzas from the server to the client after a
+configurable number of stanzas have been received from the client. 
+</p>
+<p>
+Setting the system property to "1" would indicate that each client packet should 
+be ack'd by the server when stream management is enabled for a particular stream. 
+To disable unsolicited server acks, use the default value for system property
+"stream.management.unsolicitedAckFrequency" ("0"). This setting does not affect
+server responses to explicit ack requests from the client.
+</p>
 </body>
 </html>

src/plugins/websocket/src/java/org/jivesoftware/openfire/websocket/StreamManagementPacketRouter.java

@@ -15,8 +15,6 @@
  */
 package org.jivesoftware.openfire.websocket;
 
-import java.io.UnsupportedEncodingException;
-
 import org.dom4j.Element;
 import org.jivesoftware.openfire.SessionPacketRouter;
 import org.jivesoftware.openfire.multiplex.UnknownStanzaException;

src/plugins/websocket/src/java/org/jivesoftware/openfire/websocket/WebSocketConnection.java

@@ -19,13 +19,10 @@ import java.net.InetSocketAddress;
 
 import org.dom4j.Namespace;
 import org.jivesoftware.openfire.PacketDeliverer;
-import org.jivesoftware.openfire.XMPPServer;
 import org.jivesoftware.openfire.auth.UnauthorizedException;
 import org.jivesoftware.openfire.net.VirtualConnection;
 import org.jivesoftware.openfire.nio.OfflinePacketDeliverer;
 import org.jivesoftware.openfire.spi.ConnectionConfiguration;
-import org.jivesoftware.openfire.spi.ConnectionManagerImpl;
-import org.jivesoftware.openfire.spi.ConnectionType;
 import org.xmpp.packet.Packet;
 import org.xmpp.packet.StreamError;
 
@@ -35,7 +32,6 @@ import org.xmpp.packet.StreamError;
  */
 public class WebSocketConnection extends VirtualConnection
 {
-	private static final String CLIENT_NAMESPACE = "jabber:client";
     private InetSocketAddress remotePeer;
     private XmppWebSocket socket;
     private PacketDeliverer backupDeliverer;

src/plugins/websocket/src/java/org/jivesoftware/openfire/websocket/XmppWebSocket.java

@@ -41,6 +41,7 @@ import org.jivesoftware.openfire.net.SASLAuthentication;
 import org.jivesoftware.openfire.net.SASLAuthentication.Status;
 import org.jivesoftware.openfire.session.ConnectionSettings;
 import org.jivesoftware.openfire.session.LocalClientSession;
+import org.jivesoftware.openfire.streammanagement.StreamManager;
 import org.jivesoftware.util.JiveConstants;
 import org.jivesoftware.util.JiveGlobals;
 import org.jivesoftware.util.TaskEngine;
@@ -304,7 +305,7 @@ public class XmppWebSocket {
             sb.append(String.format("<session xmlns='%s'><optional/></session>", "urn:ietf:params:xml:ns:xmpp-session"));
 
             if (isStreamManagementAvailable()) {
-            	sb.append(String.format("<sm xmlns='%s'/>", "urn:xmpp:sm:3"));
+            	sb.append(String.format("<sm xmlns='%s'/>", StreamManager.NAMESPACE_V3));
             }
         }
         
@@ -365,13 +366,7 @@ public class XmppWebSocket {
 	}
 
 	private boolean isStreamManagementAvailable() {
-		try {
-			// use reflection to determine whether stream management is supported
-			Class.forName("org.jivesoftware.openfire.streammanagement.StreamManager");
-			return JiveGlobals.getBooleanProperty("stream.management.active", true);
-		} catch (ClassNotFoundException cnfe) {
-			return false;
-		}
+		return JiveGlobals.getBooleanProperty(StreamManager.SM_ACTIVE, true);
 	}
 
 	//-- Keep-alive ping for idle peers