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Merge pull request #74 from michitux/heartbeat_schedule

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GCM: Make heartbeat more stable
This commit is contained in:
Marvin W 2016-01-12 17:11:59 +01:00
commit 285cabc57f
1 changed files with 27 additions and 5 deletions
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32
play-services-core/src/main/java/org/microg/gms/gcm/McsService.java
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@ -22,6 +22,7 @@ import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
@ -77,7 +78,8 @@ public class McsService extends Service implements Handler.Callback {
public static final int SERVICE_PORT = 5228;
private static final String PREF_GCM_HEARTBEAT = "gcm_heartbeat_interval";
public int heartbeatMs = 60000;
public static int heartbeatMs = 60000;
private static long lastHeartbeatAckElapsedRealtime = -1;
private static Socket sslSocket;
private static McsInputStream inputStream;
@ -138,17 +140,34 @@ public class McsService extends Service implements Handler.Callback {
}
public synchronized static boolean isConnected() {
return inputStream != null && inputStream.isAlive() && outputStream != null && outputStream.isAlive();
return inputStream != null && inputStream.isAlive() && outputStream != null && outputStream.isAlive()
// consider connection to be dead if we did not receive an ack within twice the heartbeat interval
&& SystemClock.elapsedRealtime() - lastHeartbeatAckElapsedRealtime < 2 * heartbeatMs;
}
public static void scheduleReconnect(Context context) {
AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);
long delay = getCurrentDelay();
Log.d(TAG, "Scheduling reconnect in " + delay / 1000 + " seconds...");
alarmManager.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + delay,
alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + delay,
PendingIntent.getBroadcast(context, 1, new Intent(ACTION_RECONNECT, null, context, TriggerReceiver.class), 0));
}
public void scheduleHeartbeat(Context context) {
AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);
Log.d(TAG, "Scheduling heartbeat in " + heartbeatMs / 1000 + " seconds...");
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + heartbeatMs, heartbeatIntent);
} else {
// with KitKat, the alarms become inexact by default, but with the newly available setWindow we can get inexact alarms with guarantees.
// Schedule the alarm to fire within the interval [heartbeatMs/2, heartbeatMs]
alarmManager.setWindow(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + heartbeatMs / 2, heartbeatMs / 2,
heartbeatIntent);
}
}
public synchronized static long getCurrentDelay() {
long delay = currentDelay == 0 ? 5000 : currentDelay;
if (currentDelay < 60000) currentDelay += 10000;
@ -181,7 +200,7 @@ public class McsService extends Service implements Handler.Callback {
WakefulBroadcastReceiver.completeWakefulIntent(intent);
}
}
return START_STICKY;
return START_REDELIVER_INTENT;
}
private synchronized void connect() {
@ -196,7 +215,8 @@ public class McsService extends Service implements Handler.Callback {
inputStream.start();
outputStream.start();
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), heartbeatMs, heartbeatIntent);
lastHeartbeatAckElapsedRealtime = SystemClock.elapsedRealtime();
scheduleHeartbeat(this);
} catch (Exception e) {
Log.w(TAG, "Exception while connecting!", e);
rootHandler.sendMessage(rootHandler.obtainMessage(MSG_TEARDOWN, e));
@ -242,6 +262,7 @@ public class McsService extends Service implements Handler.Callback {
}
private void handleHeartbeatAck(HeartbeatAck ack) {
lastHeartbeatAckElapsedRealtime = SystemClock.elapsedRealtime();
wakeLock.release();
}
@ -340,6 +361,7 @@ public class McsService extends Service implements Handler.Callback {
ping.last_stream_id_received(inputStream.getStreamId());
}
send(ping.build());
scheduleHeartbeat(this);
} else {
Log.d(TAG, "Ignoring heartbeat, not connected!");
scheduleReconnect(this);