Add initializer tests and move classpath files

The initializer tests verify that every non-optional initializer, this
includes Providers, is loadable.

Creating files under META-INF is not considered best practice. Smack's
configuration and provider files reside now in classpath directory
qualified by Smack's package namespace.

build.gradle

@@ -220,6 +220,24 @@ Smack core components.
 		compression compressionJar
 		dns dnsJar
 	}
+	task createVersionResource(type: CreateFileTask) {
+		fileContent = version
+		outputFile = new File(projectDir, 'src/main/resources/org.jivesoftware.smack/version')
+	}
+	compileJava.dependsOn(createVersionResource)
+}
+
+class CreateFileTask extends DefaultTask {
+	@Input
+	String fileContent
+
+	@OutputFile
+	File outputFile
+
+	@TaskAction
+	def createFile() {
+		outputFile.text = fileContent
+	}
 }
 
 project(':compression-jzlib') {

core/.gitignore

@@ -0,0 +1 @@
+src/main/resources/org.jivesoftware.smack/version

core/src/main/java/org/jivesoftware/smack/SmackConfiguration.java

@@ -19,6 +19,7 @@ package org.jivesoftware.smack;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -26,11 +27,13 @@ import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.jivesoftware.smack.initializer.SmackInitializer;
 import org.jivesoftware.smack.parsing.ExceptionThrowingCallback;
 import org.jivesoftware.smack.parsing.ParsingExceptionCallback;
 import org.jivesoftware.smack.util.FileUtils;
 import org.xmlpull.mxp1.MXParser;
 import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
 
 /**
  * Represents the configuration of Smack. The configuration is used for:
@@ -42,21 +45,20 @@ import org.xmlpull.v1.XmlPullParser;
  *          via the API will override settings in the configuration file.
  * </ul>
  *
- * Configuration settings are stored in META-INF/smack-config.xml (typically inside the
+ * Configuration settings are stored in org.jivesoftware.smack/smack-config.xml (typically inside the
  * smack.jar file).
  * 
  * @author Gaston Dombiak
  */
 public final class SmackConfiguration {
-    private static final String SMACK_VERSION = "3.4.0";
-    private static final String DEFAULT_CONFIG_FILE = "classpath:META-INF/smack-config.xml"; 
+    private static final String SMACK_VERSION;
+    private static final String DEFAULT_CONFIG_FILE = "classpath:org.jivesoftware.smack/smack-config.xml";
     
     private static final Logger log = Logger.getLogger(SmackConfiguration.class.getName());
     
     private static InputStream configFileStream;
     
     private static int packetReplyTimeout = 5000;
-    private static int keepAliveInterval = 30000;
     private static List<String> defaultMechs = new ArrayList<String>();
 
     private static boolean localSocks5ProxyEnabled = true;
@@ -65,6 +67,20 @@ public final class SmackConfiguration {
     
     private static boolean initialized = false;
 
+    static {
+        String smackVersion;
+        try {
+            InputStream is = FileUtils.getStreamForUrl("classpath:org.jivesoftware.smack/version", null);
+            byte[] buf = new byte[1024];
+            is.read(buf);
+            smackVersion = new String(buf, Charset.forName("UTF-8"));
+        } catch(Exception e) {
+            log.log(Level.SEVERE, "Could not determine Smack version", e);
+            smackVersion = "unkown";
+        }
+        SMACK_VERSION = smackVersion;
+    }
+
     /**
      * The default parsing exception callback is {@link ExceptionThrowingCallback} which will
      * throw an exception and therefore disconnect the active connection.
@@ -88,7 +104,7 @@ public final class SmackConfiguration {
      */
     
     /**
-     * Sets the location of the config file on the classpath. Only required if changing from the default location of <i>classpath:META-INF/smack-config.xml</i>.
+     * Sets the location of the config file on the classpath. Only required if changing from the default location of <i>classpath:org.jivesoftware.smack/smack-config.xml</i>.
      * 
      * <p>
      * This method must be called before accessing any other class in Smack.
@@ -320,8 +336,21 @@ public final class SmackConfiguration {
         return defaultCallback;
     }
 
-    private static void parseClassToLoad(XmlPullParser parser) throws Exception {
-        String className = parser.nextText();
+    public static void parseClassesToLoad(XmlPullParser parser, boolean optional) throws XmlPullParserException, IOException, Exception {
+        final String startName = parser.getName();
+        int eventType;
+        String name;
+        do {
+            eventType = parser.next();
+            name = parser.getName();
+            if (eventType == XmlPullParser.START_TAG && "className".equals(name)) {
+                String classToLoad = parser.nextText();
+                loadSmackClass(classToLoad, optional);
+            }
+        } while (! (eventType == XmlPullParser.END_TAG && startName.equals(name)));
+    }
+
+    public static void loadSmackClass(String className, boolean optional) throws Exception {
         // Attempt to load the class so that the class can get initialized
         try {
             Class<?> initClass = Class.forName(className);
@@ -332,7 +361,17 @@ public final class SmackConfiguration {
             }
         }
         catch (ClassNotFoundException cnfe) {
-            log.log(Level.WARNING, "A startup class [" + className + "] specified in smack-config.xml could not be loaded: ");
+            Level logLevel;
+            if (optional) {
+                logLevel = Level.FINE;
+            }
+            else {
+                logLevel = Level.WARNING;
+            }
+            log.log(logLevel, "A startup class [" + className
+                            + "] specified in smack-config.xml could not be loaded: ");
+            if (!optional)
+                throw cnfe;
         }
     }
 
@@ -373,36 +412,39 @@ public final class SmackConfiguration {
                 configFileStream = FileUtils.getStreamForUrl(DEFAULT_CONFIG_FILE, null);
             }
             catch (Exception e) {
-                log.log(Level.INFO, "Could not create input stream for default config file [" + DEFAULT_CONFIG_FILE + "]", e);
+                throw new IllegalStateException(e);
             }
         }
         
         if (configFileStream != null) {
+            try {
                 readFile(configFileStream);
             }
+            catch (Exception e) {
+                throw new IllegalStateException(e);
+            }
+        }
         else {
             log.log(Level.INFO, "No configuration file found");
         }
     }
 
-    private static void readFile(InputStream cfgFileStream) {
-        try {
+    private static void readFile(InputStream cfgFileStream) throws Exception {
         XmlPullParser parser = new MXParser();
         parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
         parser.setInput(cfgFileStream, "UTF-8");
         int eventType = parser.getEventType();
         do {
             if (eventType == XmlPullParser.START_TAG) {
-                    if (parser.getName().equals("className")) {
-                        // Attempt to load the class so that the class can get initialized
-                        parseClassToLoad(parser);
+                if (parser.getName().equals("startupClasses")) {
+                    parseClassesToLoad(parser, false);
+                }
+                else if (parser.getName().equals("optionalStartupClasses")) {
+                    parseClassesToLoad(parser, true);
                 }
                 else if (parser.getName().equals("packetReplyTimeout")) {
                     packetReplyTimeout = parseIntProperty(parser, packetReplyTimeout);
                 }
-                    else if (parser.getName().equals("keepAliveInterval")) {
-                        keepAliveInterval = parseIntProperty(parser, keepAliveInterval);
-                    }
                 else if (parser.getName().equals("mechName")) {
                     defaultMechs.add(parser.nextText());
                 }
@@ -420,16 +462,13 @@ public final class SmackConfiguration {
                 }
             }
             eventType = parser.next();
-            } while (eventType != XmlPullParser.END_DOCUMENT);
-        } catch (Exception e) {
-            log.log(Level.SEVERE, "Error occurred while reading config file", e);
         }
-        finally {
+        while (eventType != XmlPullParser.END_DOCUMENT);
         try {
             cfgFileStream.close();
-            } catch (IOException e) {
-                log.log(Level.INFO, "Error while closing config file input stream", e);
         }
+        catch (IOException e) {
+            log.log(Level.SEVERE, "Error while closing config file input stream", e);
         }
     }
 }

core/src/main/java/org/jivesoftware/smack/initializer/CoreInitializer.java

@@ -1,6 +1,5 @@
-package org.jivesoftware.smack.provider;
+package org.jivesoftware.smack.initializer;
 
-import org.jivesoftware.smack.SmackInitializer;
 
 /**
  * Loads the default provider file for the Smack core on initialization.
@@ -10,6 +9,6 @@ import org.jivesoftware.smack.SmackInitializer;
  */
 public class CoreInitializer extends UrlProviderFileInitializer implements SmackInitializer {
     protected String getFilePath() {
-        return "classpath:META-INF/core.providers";
+        return "classpath:org.jivesoftware.smack/core.providers";
     }
 }

core/src/main/java/org/jivesoftware/smack/initializer/LoggingInitializer.java

@@ -1,5 +1,8 @@
-package org.jivesoftware.smack;
+package org.jivesoftware.smack.initializer;
 
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.LogManager;
 import java.util.logging.Logger;
@@ -16,13 +19,21 @@ public class LoggingInitializer implements SmackInitializer {
 
     private static Logger log = Logger.getLogger(LoggingInitializer.class.getName());
     
+    private List<Exception> exceptions = new LinkedList<Exception>();
+
     @Override
     public void initialize() {
         try {
-            LogManager.getLogManager().readConfiguration(FileUtils.getStreamForUrl("classpath:META-INF/jul.properties", null));
+            LogManager.getLogManager().readConfiguration(FileUtils.getStreamForUrl("classpath:org.jivesofware.smack/jul.properties", null));
         } 
         catch (Exception e) {
             log .log(Level.WARNING, "Could not initialize Java Logging from default file.", e);
+            exceptions.add(e);
         }
     }
+
+	@Override
+	public List<Exception> getExceptions() {
+		return Collections.unmodifiableList(exceptions);
+	}
 }

core/src/main/java/org/jivesoftware/smack/initializer/SmackInitializer.java

@@ -1,4 +1,8 @@
-package org.jivesoftware.smack;
+package org.jivesoftware.smack.initializer;
+
+import java.util.List;
+
+import org.jivesoftware.smack.SmackConfiguration;
 
 /**
  * Defines an initialization class that will be instantiated and invoked by the {@link SmackConfiguration} class during initialization.
@@ -11,4 +15,5 @@ package org.jivesoftware.smack;
  */
 public interface SmackInitializer {
     void initialize();
+    List<Exception> getExceptions();
 }

core/src/main/java/org/jivesoftware/smack/initializer/UrlProviderFileInitializer.java

@@ -1,15 +1,19 @@
-package org.jivesoftware.smack.provider;
+package org.jivesoftware.smack.initializer;
 
+import java.io.IOException;
 import java.io.InputStream;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedList;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
-import org.jivesoftware.smack.SmackInitializer;
+import org.jivesoftware.smack.provider.ProviderFileLoader;
+import org.jivesoftware.smack.provider.ProviderManager;
 import org.jivesoftware.smack.util.FileUtils;
 
 /**
@@ -21,6 +25,8 @@ import org.jivesoftware.smack.util.FileUtils;
 public abstract class UrlProviderFileInitializer implements SmackInitializer {
     private static final Logger log = Logger.getLogger(UrlProviderFileInitializer.class.getName());
 
+    private List<Exception> exceptions = new LinkedList<Exception>();
+
     @Override
     public void initialize() {
         String filePath = getFilePath();
@@ -30,17 +36,26 @@ public abstract class UrlProviderFileInitializer implements SmackInitializer {
             
             if (is != null) {
                 log.log(Level.INFO, "Loading providers for file [" + filePath + "]");
-                ProviderManager.getInstance().addLoader(new ProviderFileLoader(is));
+                ProviderFileLoader pfl = new ProviderFileLoader(is);
+                ProviderManager.getInstance().addLoader(pfl);
+                exceptions.addAll(pfl.getLoadingExceptions());
             }
             else {
                 log.log(Level.WARNING, "No input stream created for " + filePath);
+                exceptions.add(new IOException("No input stream created for " + filePath));
             }
         }
         catch (Exception e) {
             log.log(Level.SEVERE, "Error trying to load provider file " + filePath, e);
+            exceptions.add(e);
         }
     }
 
+    @Override
+    public List<Exception> getExceptions() {
+    	return Collections.unmodifiableList(exceptions);
+    }
+
     protected abstract String getFilePath();
     
     /**

core/src/main/java/org/jivesoftware/smack/initializer/VmArgInitializer.java

@@ -1,4 +1,6 @@
-package org.jivesoftware.smack.provider;
+package org.jivesoftware.smack.initializer;
+
+import org.jivesoftware.smack.provider.ProviderManager;
 
 
 /**

core/src/main/java/org/jivesoftware/smack/provider/ProviderFileLoader.java

@@ -3,6 +3,9 @@ package org.jivesoftware.smack.provider;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -24,6 +27,7 @@ public class ProviderFileLoader implements ProviderLoader {
     private Collection<IQProviderInfo> iqProviders;
     private Collection<ExtensionProviderInfo> extProviders;
     private InputStream providerStream;
+    private List<Exception> exceptions = new LinkedList<Exception>();
     
     public ProviderFileLoader(InputStream providerFileInputStream) {
         setInputStream(providerFileInputStream);
@@ -44,6 +48,10 @@ public class ProviderFileLoader implements ProviderLoader {
         return extProviders;
     }
     
+    public List<Exception> getLoadingExceptions() {
+    	return Collections.unmodifiableList(exceptions);
+    }
+
     @SuppressWarnings("unchecked")
     private synchronized void initialize() {
         // Check to see if already initialized
@@ -112,11 +120,13 @@ public class ProviderFileLoader implements ProviderLoader {
                             }
                             catch (ClassNotFoundException cnfe) {
                                 log.log(Level.SEVERE, "Could not find provider class", cnfe);
+                                exceptions.add(cnfe);
                             }
                         }
                     }
                     catch (IllegalArgumentException illExc) {
                         log.log(Level.SEVERE, "Invalid provider type found [" + typeName + "] when expecting iqProvider or extensionProvider", illExc);
+                        exceptions.add(illExc);
                     }
                 }
                 eventType = parser.next();

core/src/main/java/org/jivesoftware/smack/provider/ProviderManager.java

@@ -41,7 +41,7 @@ import org.jivesoftware.smack.packet.IQ;
  *
  * Because many more IQ types are part of XMPP and its extensions, a pluggable IQ parsing
  * mechanism is provided. IQ providers are registered programatically or by creating a
- * smack.providers file in the META-INF directory of your JAR file. The file is an XML
+ * providers file. The file is an XML
  * document that contains one or more iqProvider entries, as in the following example:
  *
  * <pre>

core/src/main/resources/org.jivesoftware.smack/core.providers

@@ -9,11 +9,4 @@
         <className>org.jivesoftware.smack.provider.PrivacyProvider</className>
     </iqProvider>
 
-    <!-- Ping (XEP-199) Manager -->
-    <iqProvider>
-        <elementName>ping</elementName>
-        <namespace>urn:xmpp:ping</namespace>
-        <className>org.jivesoftware.smack.ping.provider.PingProvider</className>
-    </iqProvider>
-
 </smackProviders>

core/src/main/resources/org.jivesoftware.smack/smack-config.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<!-- Smack configuration file. -->
+<smack>
+
+    <!-- Packet reply timeout in milliseconds -->
+    <packetReplyTimeout>5000</packetReplyTimeout>
+
+    <!-- Enable/Disable local Socks5 proxy -->
+    <localSocks5ProxyEnabled>true</localSocks5ProxyEnabled>
+
+    <!-- Port of the local Socks5 proxy -->
+    <localSocks5ProxyPort>7777</localSocks5ProxyPort>
+
+    <!-- Port of the local Socks5 proxy -->
+    <packetCollectorSize>10000</packetCollectorSize>
+    
+    <!-- Automatic enable Entity Caps (XEP-0115) for new connections -->
+    <autoEnableEntityCaps>false</autoEnableEntityCaps>
+    
+    <!-- Classes that will be loaded when Smack starts -->
+    <startupClasses>
+        <className>org.jivesoftware.smack.initializer.CoreInitializer</className>
+        <className>org.jivesoftware.smack.initializer.VmArgInitializer</className>
+        <className>org.jivesoftware.smack.PrivacyListManager</className>
+        <className>org.jivesoftware.smack.ReconnectionManager</className>
+    </startupClasses>
+
+    <optionalStartupClasses>
+        <className>org.jivesoftware.smack.util.dns.JavaxResolver</className>
+        <className>org.jivesoftware.smackx.ExtensionsProviderInitializer</className>
+        <className>org.jivesoftware.smackx.ExtensionsStartupClasses</className>
+        <className>org.jivesoftware.smackx.ExperimentalProviderInitializer</className>
+        <className>org.jivesoftware.smackx.WorkgroupProviderInitializer</className>
+    </optionalStartupClasses>
+</smack>

core/src/main/resources/smack-config.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0"?>
-<!-- Smack configuration file. -->
-<smack>
-
-    <!-- Packet reply timeout in milliseconds -->
-    <packetReplyTimeout>5000</packetReplyTimeout>
-
-    <!-- Enable/Disable local Socks5 proxy -->
-    <localSocks5ProxyEnabled>true</localSocks5ProxyEnabled>
-
-    <!-- Port of the local Socks5 proxy -->
-    <localSocks5ProxyPort>7777</localSocks5ProxyPort>
-
-    <!-- Port of the local Socks5 proxy -->
-    <packetCollectorSize>10000</packetCollectorSize>
-    
-    <!-- Automatic enable Entity Caps (XEP-0115) for new connections -->
-    <autoEnableEntityCaps>false</autoEnableEntityCaps>
-    
-    <!-- Classes that will be loaded when Smack starts -->
-    <startupClasses>
-        <className>org.jivesoftware.smack.provider.CoreInitializer</className>
-        <className>org.jivesoftware.smack.provider.VmArgInitializer</className>
-        <className>org.jivesoftware.smack.PrivacyListManager</className>        
-        <className>org.jivesoftware.smackx.ExtensionInitializer</className>
-        <className>org.jivesoftware.smackx.disco.ServiceDiscoveryManager</className>
-        <className>org.jivesoftware.smackx.xhtmlim.XHTMLManager</className>
-        <className>org.jivesoftware.smackx.muc.MultiUserChat</className>
-        <className>org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager</className>
-        <className>org.jivesoftware.smackx.bytestreams.socks5.Socks5BytestreamManager</className>    
-        <className>org.jivesoftware.smackx.filetransfer.FileTransferManager</className>
-        <className>org.jivesoftware.smackx.iqlast.LastActivityManager</className>
-        <className>org.jivesoftware.smack.ReconnectionManager</className>    
-        <className>org.jivesoftware.smackx.commands.AdHocCommandManager</className>    
-        <className>org.jivesoftware.smack.util.dns.JavaxResolver</className>
-        <className>org.jivesoftware.smackx.ping.PingManager</className>
-    </startupClasses>
-
-</smack>

core/src/test/java/org/jivesoftware/smack/SmackConfigurationTest.java

@@ -0,0 +1,17 @@
+package org.jivesoftware.smack;
+
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+
+public class SmackConfigurationTest {
+
+    @Test
+    public void testSmackConfiguration() {
+        try {
+            SmackConfiguration.getPacketReplyTimeout();
+        } catch (Throwable t) {
+            fail("SmackConfiguration threw Throwable");
+        }
+    }
+}

core/src/test/java/org/jivesoftware/smack/initializer/CoreInitializerTest.java

@@ -0,0 +1,17 @@
+package org.jivesoftware.smack.initializer;
+
+import static org.junit.Assert.assertTrue;
+
+import org.jivesoftware.smack.initializer.CoreInitializer;
+import org.junit.Test;
+
+public class CoreInitializerTest {
+
+    @Test
+    public void testCoreInitializer() {
+        CoreInitializer ci = new CoreInitializer();
+        ci.initialize();
+        assertTrue(ci.getExceptions().size() == 0);
+    }
+
+}

experimental/src/main/java/org/jivesoftware/smackx/ExperimentalProviderInitializer.java

@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package org.jivesoftware.smackx.experimental;
+package org.jivesoftware.smackx;
 
-import org.jivesoftware.smack.provider.UrlProviderFileInitializer;
+import org.jivesoftware.smack.initializer.UrlProviderFileInitializer;
 
 /**
  * Initializes the providers in the experimental code stream.
@@ -28,6 +28,6 @@ public class ExperimentalProviderInitializer  extends UrlProviderFileInitializer
 
     @Override
     protected String getFilePath() {
-        return "classpath:META-INF/experimental.providers";
+        return "classpath:org.jivesoftware.smackx/experimental.providers";
     }
 }

experimental/src/main/java/org/jivesoftware/smackx/WorkgroupProviderInitializer.java

@@ -0,0 +1,11 @@
+package org.jivesoftware.smackx;
+
+import org.jivesoftware.smack.initializer.UrlProviderFileInitializer;
+
+public class WorkgroupProviderInitializer  extends UrlProviderFileInitializer {
+
+    @Override
+    protected String getFilePath() {
+        return "classpath:org.jivesoftware.smackx/workgroup.providers";
+    }
+}

experimental/src/main/java/org/jivesoftware/smackx/workgroup/WorkgroupProviderInitializer.java

@@ -1,11 +0,0 @@
-package org.jivesoftware.smackx.workgroup;
-
-import org.jivesoftware.smack.provider.UrlProviderFileInitializer;
-
-public class WorkgroupProviderInitializer  extends UrlProviderFileInitializer {
-
-    @Override
-    protected String getFilePath() {
-        return "classpath:META-INF/workgroup.providers";
-    }
-}

experimental/src/test/java/org/jivesoftware/smackx/ExperimentalProviderInitializerTest.java

@@ -0,0 +1,15 @@
+package org.jivesoftware.smackx;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class ExperimentalProviderInitializerTest {
+
+    @Test
+    public void testExperimentalProviderInitialzer() {
+        ExperimentalProviderInitializer epi = new ExperimentalProviderInitializer();
+        epi.initialize();
+        assertTrue(epi.getExceptions().size() == 0);
+    }
+}

experimental/src/test/java/org/jivesoftware/smackx/WorkgroupProviderInitializerTest.java

@@ -0,0 +1,15 @@
+package org.jivesoftware.smackx;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class WorkgroupProviderInitializerTest {
+
+    @Test
+    public void testWorkgroupProviderInitializer() {
+        WorkgroupProviderInitializer wpi = new WorkgroupProviderInitializer();
+        wpi.initialize();
+        assertTrue(wpi.getExceptions().size() == 0);
+    }
+}

extensions/src/main/java/org/jivesoftware/smackx/ExtensionInitializer.java

@@ -1,16 +0,0 @@
-package org.jivesoftware.smackx;
-
-import org.jivesoftware.smack.provider.UrlProviderFileInitializer;
-
-/**
- * Loads the default provider file for the Smack extensions on initialization.
- * 
- * @author Robin Collier
- *
- */
-public class ExtensionInitializer extends UrlProviderFileInitializer {
-    @Override
-    protected String getFilePath() {
-        return "classpath:META-INF/extension.providers";
-    }
-}

extensions/src/main/java/org/jivesoftware/smackx/ExtensionsProviderInitializer.java

@@ -0,0 +1,16 @@
+package org.jivesoftware.smackx;
+
+import org.jivesoftware.smack.initializer.UrlProviderFileInitializer;
+
+/**
+ * Loads the default provider file for the Smack extensions on initialization.
+ * 
+ * @author Robin Collier
+ *
+ */
+public class ExtensionsProviderInitializer extends UrlProviderFileInitializer {
+    @Override
+    protected String getFilePath() {
+        return "classpath:org.jivesoftware.smackx/extensions.providers";
+    }
+}

extensions/src/main/java/org/jivesoftware/smackx/ExtensionsStartupClasses.java

@@ -0,0 +1,65 @@
+package org.jivesoftware.smackx;
+
+import java.io.InputStream;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.jivesoftware.smack.SmackConfiguration;
+import org.jivesoftware.smack.initializer.SmackInitializer;
+import org.jivesoftware.smack.util.FileUtils;
+import org.xmlpull.mxp1.MXParser;
+import org.xmlpull.v1.XmlPullParser;
+
+public class ExtensionsStartupClasses implements SmackInitializer {
+
+    private static final String EXTENSIONS_XML = "classpath:org.jivesoftware.smackx/extensions.xml";
+
+    private List<Exception> exceptions = new LinkedList<Exception>();
+    // TODO log
+
+    @Override
+    public void initialize() {
+        InputStream is;
+        XmlPullParser parser;
+        int eventType;
+        try {
+            is = FileUtils.getStreamForUrl(EXTENSIONS_XML, null);
+            parser = new MXParser();
+            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
+            parser.setInput(is, "UTF-8");
+            eventType = parser.getEventType();
+        }
+        catch (Exception e) {
+            exceptions.add(e);
+            return;
+        }
+        try {
+            do {
+                String name = parser.getName();
+                if (eventType == XmlPullParser.START_TAG) {
+                    if ("startupClasses".equals(name)) {
+                        try {
+                            SmackConfiguration.parseClassesToLoad(parser, false);
+                        }
+                        catch (Exception e) {
+                            exceptions.add(e);
+                        }
+                    }
+                }
+                eventType = parser.next();
+            }
+            while (eventType != XmlPullParser.END_DOCUMENT);
+            is.close();
+        }
+        catch (Exception e) {
+            exceptions.add(e);
+        }
+    }
+
+    @Override
+    public List<Exception> getExceptions() {
+        return Collections.unmodifiableList(exceptions);
+    }
+
+}

extensions/src/main/resources/org.jivesoftware.smackx/extensions.providers

@@ -442,4 +442,11 @@
 		<className>org.jivesoftware.smackx.forward.provider.ForwardedProvider</className>
 	</extensionProvider>
 
+    <!-- Ping (XEP-199) Manager -->
+    <iqProvider>
+        <elementName>ping</elementName>
+        <namespace>urn:xmpp:ping</namespace>
+        <className>org.jivesoftware.smackx.ping.provider.PingProvider</className>
+    </iqProvider>
+
 </smackProviders>

extensions/src/main/resources/org.jivesoftware.smackx/extensions.xml

@@ -0,0 +1,13 @@
+<smack>
+    <startupClasses>
+        <className>org.jivesoftware.smackx.disco.ServiceDiscoveryManager</className>
+        <className>org.jivesoftware.smackx.xhtmlim.XHTMLManager</className>
+        <className>org.jivesoftware.smackx.muc.MultiUserChat</className>
+        <className>org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager</className>
+        <className>org.jivesoftware.smackx.bytestreams.socks5.Socks5BytestreamManager</className>
+        <className>org.jivesoftware.smackx.filetransfer.FileTransferManager</className>
+        <className>org.jivesoftware.smackx.iqlast.LastActivityManager</className>
+        <className>org.jivesoftware.smackx.commands.AdHocCommandManager</className>
+        <className>org.jivesoftware.smackx.ping.PingManager</className>
+    </startupClasses>
+</smack>

extensions/src/test/java/org/jivesoftware/smackx/ExtensionsProviderInitializerTest.java

@@ -0,0 +1,16 @@
+package org.jivesoftware.smackx;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class ExtensionsProviderInitializerTest {
+
+    @Test
+    public void testExtensionProviderInitializer() {
+        ExtensionsProviderInitializer ei = new ExtensionsProviderInitializer();
+        ei.initialize();
+        assertTrue(ei.getExceptions().size() == 0);
+    }
+
+}

extensions/src/test/java/org/jivesoftware/smackx/ExtensionsStartupClassesTest.java

@@ -0,0 +1,16 @@
+package org.jivesoftware.smackx;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class ExtensionsStartupClassesTest {
+
+    @Test
+    public void testExtensiosnStartupClasses() {
+        ExtensionsStartupClasses esc = new ExtensionsStartupClasses();
+        esc.initialize();
+        assertTrue(esc.getExceptions().size() == 0);
+    }
+
+}