关闭WiFi的时候，报错误：

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): XMPP connection failed

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): 192.168.3.100:5222 Exception: XMPPError connecting to 192.168.3.100:5222.; : remote-server-error(502)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512):   -- caused by: XMPPError connecting to 192.168.3.100:5222.: remote-server-error(502) XMPPError connecting to 192.168.3.100:5222.

01-21 09:34:23.872: E/Androidpn_XmppManager(1512):   -- caused by: java.net.ConnectException: failed to connect to /192.168.3.100 (port 5222): connect failed: ENETUNREACH (Network is unreachable)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.jivesoftware.smack.XMPPConnection.connectUsingConfiguration(XMPPConnection.java:601)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.jivesoftware.smack.XMPPConnection.connect(XMPPConnection.java:1021)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.androidpn.client.XmppManager$ConnectTask.run(XmppManager.java:307)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.FutureTask.run(FutureTask.java:137)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.lang.Thread.run(Thread.java:856)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): Nested Exception: 

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): XMPPError connecting to 192.168.3.100:5222.: remote-server-error(502) XMPPError connecting to 192.168.3.100:5222.

01-21 09:34:23.872: E/Androidpn_XmppManager(1512):   -- caused by: java.net.ConnectException: failed to connect to /192.168.3.100 (port 5222): connect failed: ENETUNREACH (Network is unreachable)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.jivesoftware.smack.XMPPConnection.connectUsingConfiguration(XMPPConnection.java:574)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.jivesoftware.smack.XMPPConnection.connect(XMPPConnection.java:1021)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at org.androidpn.client.XmppManager$ConnectTask.run(XmppManager.java:307)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

01-21 09:34:23.872: E/Androidpn_XmppManager(1512): at java.util.concurrent.FutureTask.run(FutureTask.java:137)   等...

接着我重新连上WiFi后，log先打印：

01-21 09:34:34.696: I/Androidpn_ConnectivityReceiver(1512): Network connected

然后就一直重复打印下面的log：

01-21 09:34:34.696: D/Androidpn_NotificationService(1512): connect()...

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): connect()...

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): submitLoginTask()...

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): submitRegisterTask()...

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): submitConnectTask()...

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)...

01-21 09:34:34.696: D/Androidpn_NotificationService(1512): Incremented task count to 9

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)... done

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)...

01-21 09:34:34.696: D/Androidpn_NotificationService(1512): Incremented task count to 10

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)... done

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)...

01-21 09:34:34.696: D/Androidpn_NotificationService(1512): Incremented task count to 11

01-21 09:34:34.696: D/Androidpn_XmppManager(1512): addTask(runnable)... done

01-21 09:34:43.864: D/Androidpn_XmppManager(1512): connect()...

问题出在哪里呢？