Call pingServerIfNecessary in new thread

in order to prevent the BroadcastReceiver from timing out.

To prevent:

10-24 10:59:35.096 W/BroadcastQueue( 1044): Timeout of broadcast BroadcastRecord{43400df0 u0 org.igniterealtime.smackx.ping.ACTION} - receiver=android.os.BinderProxy@42d37cc0, started 60000ms ago
10-24 10:59:35.096 W/BroadcastQueue( 1044): Receiver during timeout: BroadcastFilter{42cee7b0 u0 ReceiverList{42cfd9f0 16003 org.projectmaxs.transport.xmpp/10149/u0 remote:42d37cc0}}

10-24 10:59:38.201 E/ActivityManager( 1044): ANR in org.projectmaxs.transport.xmpp
10-24 10:59:38.201 E/ActivityManager( 1044): PID: 16003
10-24 10:59:38.201 E/ActivityManager( 1044): Reason: Broadcast of Intent { act=org.igniterealtime.smackx.ping.ACTION flg=0x14 (has extras) }
10-24 10:59:38.201 E/ActivityManager( 1044): Load: 18.97 / 31.7 / 45.71
10-24 10:59:38.201 E/ActivityManager( 1044): CPU usage from 20588ms to 0ms ago:
10-24 10:59:38.201 E/ActivityManager( 1044):   0.4% 1044/system_server: 0.2% user + 0.1% kernel / faults: 188 minor 1 major
10-24 10:59:38.201 E/ActivityManager( 1044):   0.4% 9089/kworker/0:3: 0% user + 0.4% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0.1% 1567/mpdecision: 0% user + 0.1% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0.1% 28507/kworker/u:5: 0% user + 0.1% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 7/kworker/u:0H: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 148/mmcqd/0: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 14687/com.teslacoilsw.launcher: 0% user + 0% kernel / faults: 6 minor
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 3/ksoftirqd/0: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 1111/MC_Thread: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 1135/wpa_supplicant: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 1283/com.android.phone: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 11469/com.getpebble.android: 0% user + 0% kernel / faults: 1 minor
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 14971/com.google.android.apps.unveil: 0% user + 0% kernel / faults: 6 minor
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 28677/watch_server: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   0% 31539/kworker/0:2: 0% user + 0% kernel
10-24 10:59:38.201 E/ActivityManager( 1044): 1.2% TOTAL: 0.4% user + 0.5% kernel + 0.2% iowait
10-24 10:59:38.201 E/ActivityManager( 1044): CPU usage from 2536ms to 3060ms later:
10-24 10:59:38.201 E/ActivityManager( 1044):   9.2% 1044/system_server: 1.8% user + 7.4% kernel / faults: 56 minor
10-24 10:59:38.201 E/ActivityManager( 1044):     5.5% 1058/ActivityManager: 0% user + 5.5% kernel
10-24 10:59:38.201 E/ActivityManager( 1044):   1.3% 23415/kworker/0:1H: 0% user + 1.3% kernel
10-24 10:59:38.201 E/ActivityManager( 1044): 0% TOTAL: 0% user + 0% kernel + 0% iowait
10-24 10:59:38.208 I/ActivityManager( 1044): Killing 16003:org.projectmaxs.transport.xmpp/u0a149 (adj 0): background ANR

smack-android-extensions/src/main/java/org/jivesoftware/smackx/ping/android/ServerPingWithAlarmManager.java

@@ -27,6 +27,7 @@ import org.jivesoftware.smack.ConnectionCreationListener;
 import org.jivesoftware.smack.Manager;
 import org.jivesoftware.smack.XMPPConnection;
 import org.jivesoftware.smack.XMPPConnectionRegistry;
+import org.jivesoftware.smack.util.Async;
 import org.jivesoftware.smackx.ping.PingManager;
 
 import android.app.AlarmManager;
@@ -118,7 +119,21 @@ public class ServerPingWithAlarmManager extends Manager {
 				if (ServerPingWithAlarmManager.getInstanceFor(connection).isEnabled()) {
 					LOGGER.fine("Calling pingServerIfNecessary for connection "
 							+ connection.getConnectionCounter());
-					PingManager.getInstanceFor(connection).pingServerIfNecessary();
+					final PingManager pingManager = PingManager.getInstanceFor(connection);
+					// Android BroadcastReceivers have a timeout of 60 seconds.
+					// The connections reply timeout may be higher, which causes
+					// timeouts of the broadcast receiver and a subsequent ANR
+					// of the App of the broadcast receiver. We therefore need
+					// to call pingServerIfNecessary() in a new thread to avoid
+					// this. It could happen that the device gets back to sleep
+					// until the Thread runs, but that's a risk we are willing
+					// to take into account as it's unlikely.
+					Async.go(new Runnable() {
+						@Override
+						public void run() {
+							pingManager.pingServerIfNecessary();
+						}
+					}, "PingServerIfNecessary (" + connection.getConnectionCounter() + ')');
 				} else {
 					LOGGER.fine("NOT calling pingServerIfNecessary (disabled) on connection "
 							+ connection.getConnectionCounter());

smack-core/src/main/java/org/jivesoftware/smack/util/Async.java

@@ -19,8 +19,19 @@ package org.jivesoftware.smack.util;
 public class Async {
 
     public static void go(Runnable runnable) {
-        Thread thread = new Thread(runnable);
+        Thread thread = daemonThreadFrom(runnable);
-        thread.setDaemon(true);
         thread.start();
     }
+
+    public static void go(Runnable runnable, String threadName) {
+        Thread thread = daemonThreadFrom(runnable);
+        thread.setName(threadName);
+        thread.start();
+    }
+
+    public static Thread daemonThreadFrom(Runnable runnable) {
+        Thread thread = new Thread(runnable);
+        thread.setDaemon(true);
+        return thread;
+    }
 }