This is Apache Vysper running on Android. It currently requires Vysper SVN trunk and the following patch to Apache MINA 2.0.4:

Index: src/main/java/org/apache/mina/filter/ssl/SslHandler.java 
=================================================================== 
--- src/main/java/org/apache/mina/filter/ssl/SslHandler.java    (revision 1142628) 
+++ src/main/java/org/apache/mina/filter/ssl/SslHandler.java    (working copy) 
@@ -509,6 +510,7 @@ 
         for (;;) { 
             switch (handshakeStatus) { 
                 case FINISHED: 
               + case NOT_HANDSHAKING: 
                     if ( LOGGER.isDebugEnabled()) { 
                         LOGGER.debug("{} processing the FINISHED state", sslFilter.getSessionInfo(session)); 
                     } 

To build, you need the Android SDK installed, you also need to create a file called "local.properties" in the project root, containing the following:

sdk.dir=<path to your Android SDK installation>

To build a debug distribution:

ant debug

You then need to start the emulator or connect the device

To deploy to a running emulator (or device):

adb install -r bin/vysper-on-android-debug.apk

To get a log from the emulator showing Vysper starting:

adb logcat

To set up port forwarding to allow a XMPP client to connect the running Vysper server:

adb forward tcp:5222 tcp:5222

You should now be able to connect an XMPP client to port 5222 on the host computer, which will be forwarded to Vysper running on Android. Pretty cool.