ANR Defensive Coding (#1132)

* Made a number of changes to try and improve background ANRs

Added some more logs to the BatchMessageReceiveJob (to make it easier to track a specific job)
Shifted the ConversationActivity adapter initialisation to run on a background thread to reduce the hang when opening a conversation
Updated the ConversationViewModel to cache the recipient and openGroup values to avoid accessing the database unnecessarily
Updated the code to just stop all current closed group pollers instead of fetching a list to stop
Updated the PN registration to be triggered in an AsyncTask
Updated the call code to unregister a couple of additional receivers
Updated the background poller so it waits for 15 mins before running and doesn't replace the existing scheduler (allows for PNs to trigger explicit background polling)
Fixed an issue where we were sending push notifications which were too large and likely to fail as a result (non-pre-offer call messages)
Fixed an issue where a failing Open Group poller could prevent the background poller from receiving and processing DMs

* Updated to a more coroutine-y convention

app/build.gradle

@@ -43,6 +43,7 @@ dependencies {
     implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycleVersion"
     implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycleVersion"
     implementation "androidx.lifecycle:lifecycle-process:$lifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"
     implementation "androidx.paging:paging-runtime-ktx:$pagingVersion"
     implementation 'androidx.activity:activity-ktx:1.5.1'
     implementation 'androidx.fragment:fragment-ktx:1.5.3'

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -272,7 +272,7 @@ public class ApplicationContext extends Application implements DefaultLifecycleO
         if (poller != null) {
             poller.stopIfNeeded();
         }
-        ClosedGroupPollerV2.getShared().stop();
+        ClosedGroupPollerV2.getShared().stopAll();
     }
 
     @Override
@@ -452,11 +452,15 @@ public class ApplicationContext extends Application implements DefaultLifecycleO
             String token = task.getResult().getToken();
             String userPublicKey = TextSecurePreferences.getLocalNumber(this);
             if (userPublicKey == null) return Unit.INSTANCE;
-            if (TextSecurePreferences.isUsingFCM(this)) {
-                LokiPushNotificationManager.register(token, userPublicKey, this, force);
-            } else {
-                LokiPushNotificationManager.unregister(token, this);
-            }
+
+            AsyncTask.THREAD_POOL_EXECUTOR.execute(() -> {
+                if (TextSecurePreferences.isUsingFCM(this)) {
+                    LokiPushNotificationManager.register(token, userPublicKey, this, force);
+                } else {
+                    LokiPushNotificationManager.unregister(token, this);
+                }
+            });
+
             return Unit.INSTANCE;
         });
     }

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationActivityV2.kt

@@ -34,6 +34,7 @@ import com.annimon.stream.Stream
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import network.loki.messenger.R
 import network.loki.messenger.databinding.ActivityConversationV2Binding
 import network.loki.messenger.databinding.ViewVisibleMessageBinding
@@ -113,6 +114,7 @@ import org.thoughtcrime.securesms.permissions.Permissions
 import org.thoughtcrime.securesms.reactions.ReactionsDialogFragment
 import org.thoughtcrime.securesms.reactions.any.ReactWithAnyEmojiDialogFragment
 import org.thoughtcrime.securesms.util.*
+import java.lang.ref.WeakReference
 import java.util.*
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.atomic.AtomicLong
@@ -304,12 +306,13 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
         // messageIdToScroll
         messageToScrollTimestamp.set(intent.getLongExtra(SCROLL_MESSAGE_ID, -1))
         messageToScrollAuthor.set(intent.getParcelableExtra(SCROLL_MESSAGE_AUTHOR))
-        val thread = threadDb.getRecipientForThreadId(viewModel.threadId)
-        if (thread == null) {
+        val recipient = viewModel.recipient
+        val openGroup = recipient.let { viewModel.openGroup }
+        if (recipient == null || (recipient.isOpenGroupRecipient && openGroup == null)) {
             Toast.makeText(this, "This thread has been deleted.", Toast.LENGTH_LONG).show()
             return finish()
         }
-        setUpRecyclerView()
+
         setUpToolBar()
         setUpInputBar()
         setUpLinkPreviewObserver()
@@ -336,22 +339,31 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
                 }
             }
         }
-        unreadCount = mmsSmsDb.getUnreadCount(viewModel.threadId)
+
         updateUnreadCountIndicator()
-        setUpTypingObserver()
-        setUpRecipientObserver()
         updateSubtitle()
-        getLatestOpenGroupInfoIfNeeded()
         setUpBlockedBanner()
         binding!!.searchBottomBar.setEventListener(this)
-        setUpSearchResultObserver()
-        scrollToFirstUnreadMessageIfNeeded()
         showOrHideInputIfNeeded()
         setUpMessageRequestsBar()
-        viewModel.recipient?.let { recipient ->
-            if (recipient.isOpenGroupRecipient && viewModel.openGroup == null) {
-                Toast.makeText(this, "This thread has been deleted.", Toast.LENGTH_LONG).show()
-                return finish()
+
+        val weakActivity = WeakReference(this)
+
+        lifecycleScope.launch(Dispatchers.IO) {
+            unreadCount = mmsSmsDb.getUnreadCount(viewModel.threadId)
+            
+            // Note: We are accessing the `adapter` property because we want it to be loaded on
+            // the background thread to avoid blocking the UI thread and potentially hanging when
+            // transitioning to the activity
+            weakActivity.get()?.adapter ?: return@launch
+
+            withContext(Dispatchers.Main) {
+                setUpRecyclerView()
+                setUpTypingObserver()
+                setUpRecipientObserver()
+                getLatestOpenGroupInfoIfNeeded()
+                setUpSearchResultObserver()
+                scrollToFirstUnreadMessageIfNeeded()
             }
         }
 
@@ -631,6 +643,8 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
 
     // region Animation & Updating
     override fun onModified(recipient: Recipient) {
+        viewModel.updateRecipient()
+
         runOnUiThread {
             val threadRecipient = viewModel.recipient ?: return@runOnUiThread
             if (threadRecipient.isContactRecipient) {

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationViewModel.kt

@@ -34,11 +34,17 @@ class ConversationViewModel(
     private val _uiState = MutableStateFlow(ConversationUiState())
     val uiState: StateFlow<ConversationUiState> = _uiState
 
+    private var _recipient: RetrieveOnce<Recipient> = RetrieveOnce {
+        repository.maybeGetRecipientForThreadId(threadId)
+    }
     val recipient: Recipient?
-        get() = repository.maybeGetRecipientForThreadId(threadId)
+        get() = _recipient.value
 
+    private var _openGroup: RetrieveOnce<OpenGroup> = RetrieveOnce {
+        storage.getOpenGroup(threadId)
+    }
     val openGroup: OpenGroup?
-        get() = storage.getOpenGroup(threadId)
+        get() = _openGroup.value
 
     val serverCapabilities: List<String>
         get() = openGroup?.let { storage.getServerCapabilities(it.server) } ?: listOf()
@@ -170,6 +176,10 @@ class ConversationViewModel(
         return repository.hasReceived(threadId)
     }
 
+    fun updateRecipient() {
+        _recipient.updateTo(repository.maybeGetRecipientForThreadId(threadId))
+    }
+
     @dagger.assisted.AssistedFactory
     interface AssistedFactory {
         fun create(threadId: Long, edKeyPair: KeyPair?): Factory
@@ -195,3 +205,19 @@ data class ConversationUiState(
     val uiMessages: List<UiMessage> = emptyList(),
     val isMessageRequestAccepted: Boolean? = null
 )
+
+data class RetrieveOnce<T>(val retrieval: () -> T?) {
+    private var triedToRetrieve: Boolean = false
+    private var _value: T? = null
+
+    val value: T?
+        get() {
+            if (triedToRetrieve) { return _value }
+
+            triedToRetrieve = true
+            _value = retrieval()
+            return _value
+        }
+
+    fun updateTo(value: T?) { _value = value }
+}

app/src/main/java/org/thoughtcrime/securesms/notifications/BackgroundPollWorker.kt

@@ -4,9 +4,11 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import androidx.work.Constraints
+import androidx.work.Data
 import androidx.work.ExistingPeriodicWorkPolicy
 import androidx.work.NetworkType
 import androidx.work.PeriodicWorkRequestBuilder
+import androidx.work.OneTimeWorkRequestBuilder
 import androidx.work.WorkManager
 import androidx.work.Worker
 import androidx.work.WorkerParameters
@@ -21,19 +23,35 @@ import org.session.libsession.messaging.sending_receiving.pollers.OpenGroupPolle
 import org.session.libsession.snode.SnodeAPI
 import org.session.libsession.utilities.TextSecurePreferences
 import org.session.libsignal.utilities.Log
+import org.session.libsignal.utilities.recover
 import org.thoughtcrime.securesms.dependencies.DatabaseComponent
 import java.util.concurrent.TimeUnit
 
 class BackgroundPollWorker(val context: Context, params: WorkerParameters) : Worker(context, params) {
+    enum class Targets {
+        DMS, CLOSED_GROUPS, OPEN_GROUPS
+    }
 
     companion object {
         const val TAG = "BackgroundPollWorker"
+        const val INITIAL_SCHEDULE_TIME = "INITIAL_SCHEDULE_TIME"
+        const val REQUEST_TARGETS = "REQUEST_TARGETS"
 
         @JvmStatic
-        fun schedulePeriodic(context: Context) {
+        fun schedulePeriodic(context: Context) = schedulePeriodic(context, targets = Targets.values())
+
+        @JvmStatic
+        fun schedulePeriodic(context: Context, targets: Array<Targets>) {
             Log.v(TAG, "Scheduling periodic work.")
-            val builder = PeriodicWorkRequestBuilder<BackgroundPollWorker>(15, TimeUnit.MINUTES)
+            val durationMinutes: Long = 15
+            val builder = PeriodicWorkRequestBuilder<BackgroundPollWorker>(durationMinutes, TimeUnit.MINUTES)
             builder.setConstraints(Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED).build())
+
+            val dataBuilder = Data.Builder()
+            dataBuilder.putLong(INITIAL_SCHEDULE_TIME, System.currentTimeMillis() + (durationMinutes * 60 * 1000))
+            dataBuilder.putStringArray(REQUEST_TARGETS, targets.map { it.name }.toTypedArray())
+            builder.setInputData(dataBuilder.build())
+
             val workRequest = builder.build()
             WorkManager.getInstance(context).enqueueUniquePeriodicWork(
                 TAG,
@@ -41,6 +59,20 @@ class BackgroundPollWorker(val context: Context, params: WorkerParameters) : Wor
                 workRequest
             )
         }
+
+        @JvmStatic
+        fun scheduleOnce(context: Context, targets: Array<Targets> = Targets.values()) {
+            Log.v(TAG, "Scheduling single run.")
+            val builder = OneTimeWorkRequestBuilder<BackgroundPollWorker>()
+            builder.setConstraints(Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED).build())
+
+            val dataBuilder = Data.Builder()
+            dataBuilder.putStringArray(REQUEST_TARGETS, targets.map { it.name }.toTypedArray())
+            builder.setInputData(dataBuilder.build())
+
+            val workRequest = builder.build()
+            WorkManager.getInstance(context).enqueue(workRequest)
+        }
     }
 
     override fun doWork(): Result {
@@ -49,41 +81,89 @@ class BackgroundPollWorker(val context: Context, params: WorkerParameters) : Wor
             return Result.failure()
         }
 
+        // If this is a scheduled run and it is happening before the initial scheduled time (as
+        // periodic background tasks run immediately when scheduled) then don't actually do anything
+        // because this might slow requests on initial startup or triggered by PNs
+        val initialScheduleTime = inputData.getLong(INITIAL_SCHEDULE_TIME, -1)
+
+        if (initialScheduleTime != -1L && System.currentTimeMillis() < (initialScheduleTime - (60 * 1000))) {
+            Log.v(TAG, "Skipping initial run.")
+            return Result.success()
+        }
+
+        // Retrieve the desired targets (defaulting to all if not provided or empty)
+        val requestTargets: List<Targets> = (inputData.getStringArray(REQUEST_TARGETS) ?: emptyArray())
+            .map {
+                try { Targets.valueOf(it) }
+                catch(e: Exception) { null }
+            }
+            .filterNotNull()
+            .ifEmpty { Targets.values().toList() }
+
         try {
-            Log.v(TAG, "Performing background poll.")
+            Log.v(TAG, "Performing background poll for ${requestTargets.joinToString { it.name }}.")
             val promises = mutableListOf<Promise<Unit, Exception>>()
 
             // DMs
-            val userPublicKey = TextSecurePreferences.getLocalNumber(context)!!
-            val dmsPromise = SnodeAPI.getMessages(userPublicKey).bind { envelopes ->
-                val params = envelopes.map { (envelope, serverHash) ->
-                    // FIXME: Using a job here seems like a bad idea...
-                    MessageReceiveParameters(envelope.toByteArray(), serverHash, null)
+            var dmsPromise: Promise<Unit, Exception> = Promise.ofSuccess(Unit)
+
+            if (requestTargets.contains(Targets.DMS)) {
+                val userPublicKey = TextSecurePreferences.getLocalNumber(context)!!
+                dmsPromise = SnodeAPI.getMessages(userPublicKey).bind { envelopes ->
+                    val params = envelopes.map { (envelope, serverHash) ->
+                        // FIXME: Using a job here seems like a bad idea...
+                        MessageReceiveParameters(envelope.toByteArray(), serverHash, null)
+                    }
+                    BatchMessageReceiveJob(params).executeAsync("background")
                 }
-                BatchMessageReceiveJob(params).executeAsync("background")
+                promises.add(dmsPromise)
             }
-            promises.add(dmsPromise)
 
             // Closed groups
-            val closedGroupPoller = ClosedGroupPollerV2() // Intentionally don't use shared
-            val storage = MessagingModuleConfiguration.shared.storage
-            val allGroupPublicKeys = storage.getAllClosedGroupPublicKeys()
-            allGroupPublicKeys.iterator().forEach { closedGroupPoller.poll(it) }
+            if (requestTargets.contains(Targets.CLOSED_GROUPS)) {
+                val closedGroupPoller = ClosedGroupPollerV2() // Intentionally don't use shared
+                val storage = MessagingModuleConfiguration.shared.storage
+                val allGroupPublicKeys = storage.getAllClosedGroupPublicKeys()
+                allGroupPublicKeys.iterator().forEach { closedGroupPoller.poll(it) }
+            }
 
             // Open Groups
-            val threadDB = DatabaseComponent.get(context).lokiThreadDatabase()
-            val openGroups = threadDB.getAllOpenGroups()
-            val openGroupServers = openGroups.map { it.value.server }.toSet()
+            var ogPollError: Exception? = null
 
-            for (server in openGroupServers) {
-                val poller = OpenGroupPoller(server, null)
-                poller.hasStarted = true
-                promises.add(poller.poll())
+            if (requestTargets.contains(Targets.OPEN_GROUPS)) {
+                val threadDB = DatabaseComponent.get(context).lokiThreadDatabase()
+                val openGroups = threadDB.getAllOpenGroups()
+                val openGroupServers = openGroups.map { it.value.server }.toSet()
+
+                for (server in openGroupServers) {
+                    val poller = OpenGroupPoller(server, null)
+                    poller.hasStarted = true
+
+                    // If one of the open group pollers fails we don't want it to cancel the DM
+                    // poller so just hold on to the error for later
+                    promises.add(
+                        poller.poll().recover {
+                            if (dmsPromise.isDone()) {
+                                throw it
+                            }
+
+                            ogPollError = it
+                        }
+                    )
+                }
             }
 
             // Wait until all the promises are resolved
             all(promises).get()
 
+            // If the Open Group pollers threw an exception then re-throw it here (now that
+            // the DM promise has completed)
+            val localOgPollException = ogPollError
+
+            if (localOgPollException != null) {
+                throw localOgPollException
+            }
+
             return Result.success()
         } catch (exception: Exception) {
             Log.e(TAG, "Background poll failed due to error: ${exception.message}.", exception)

app/src/main/java/org/thoughtcrime/securesms/service/WebRtcCallService.kt

@@ -1,6 +1,6 @@
 package org.thoughtcrime.securesms.service
 
-import android.app.Service
+import android.app.ForegroundServiceStartNotAllowedException
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -17,6 +17,8 @@ import android.telephony.PhoneStateListener.LISTEN_NONE
 import android.telephony.TelephonyManager
 import androidx.core.content.ContextCompat
 import androidx.core.os.bundleOf
+import androidx.lifecycle.LifecycleService
+import androidx.lifecycle.lifecycleScope
 import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import dagger.hilt.android.AndroidEntryPoint
 import org.session.libsession.messaging.calls.CallMessageType
@@ -25,6 +27,7 @@ import org.session.libsession.utilities.FutureTaskListener
 import org.session.libsession.utilities.recipients.Recipient
 import org.session.libsignal.utilities.Log
 import org.thoughtcrime.securesms.calls.WebRtcCallActivity
+import org.thoughtcrime.securesms.notifications.BackgroundPollWorker
 import org.thoughtcrime.securesms.util.CallNotificationBuilder
 import org.thoughtcrime.securesms.util.CallNotificationBuilder.Companion.TYPE_ESTABLISHED
 import org.thoughtcrime.securesms.util.CallNotificationBuilder.Companion.TYPE_INCOMING_CONNECTING
@@ -46,7 +49,7 @@ import javax.inject.Inject
 import org.thoughtcrime.securesms.webrtc.data.State as CallState
 
 @AndroidEntryPoint
-class WebRtcCallService : Service(), CallManager.WebRtcListener {
+class WebRtcCallService : LifecycleService(), CallManager.WebRtcListener {
 
     companion object {
 
@@ -238,7 +241,10 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
         scheduledReconnect?.cancel(false)
         scheduledTimeout = null
         scheduledReconnect = null
-        stopForeground(true)
+
+        lifecycleScope.launchWhenCreated {
+            stopForeground(true)
+        }
     }
 
     private fun isSameCall(intent: Intent): Boolean {
@@ -253,7 +259,9 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
 
     private fun isIdle() = callManager.isIdle()
 
-    override fun onBind(intent: Intent?): IBinder? = null
+    override fun onBind(intent: Intent): IBinder? {
+        return super.onBind(intent)
+    }
 
     override fun onHangup() {
         serviceExecutor.execute {
@@ -272,7 +280,8 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
         if (intent == null || intent.action == null) return START_NOT_STICKY
         serviceExecutor.execute {
             val action = intent.action
-            Log.i("Loki", "Handling ${intent.action}")
+            val callId = ((intent.getSerializableExtra(EXTRA_CALL_ID) as? UUID)?.toString() ?: "No callId")
+            Log.i("Loki", "Handling ${intent.action} for call: ${callId}")
             when {
                 action == ACTION_INCOMING_RING && isSameCall(intent) && callManager.currentConnectionState == CallState.Reconnecting -> handleNewOffer(
                     intent
@@ -361,7 +370,9 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
         insertMissedCall(recipient, false)
 
         if (callState == CallState.Idle) {
-            stopForeground(true)
+            lifecycleScope.launchWhenCreated {
+                stopForeground(true)
+            }
         }
     }
 
@@ -409,6 +420,11 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
             callManager.initializeAudioForCall()
             callManager.startIncomingRinger()
             callManager.setAudioEnabled(true)
+
+            BackgroundPollWorker.scheduleOnce(
+                this,
+                arrayOf(BackgroundPollWorker.Targets.DMS)
+            )
         }
     }
 
@@ -573,7 +589,9 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
     private fun handleRemoteHangup(intent: Intent) {
         if (callManager.callId != getCallId(intent)) {
             Log.e(TAG, "Hangup for non-active call...")
-            stopForeground(true)
+            lifecycleScope.launchWhenCreated {
+                stopForeground(true)
+            }
             return
         }
 
@@ -717,10 +735,16 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
     }
 
     private fun setCallInProgressNotification(type: Int, recipient: Recipient?) {
-        startForeground(
-            CallNotificationBuilder.WEBRTC_NOTIFICATION,
-            CallNotificationBuilder.getCallInProgressNotification(this, type, recipient)
-        )
+        try {
+            startForeground(
+                CallNotificationBuilder.WEBRTC_NOTIFICATION,
+                CallNotificationBuilder.getCallInProgressNotification(this, type, recipient)
+            )
+        }
+        catch(e: ForegroundServiceStartNotAllowedException) {
+            Log.e(TAG, "Failed to setCallInProgressNotification as a foreground service for type: ${type}, trying to update instead")
+        }
+
         if (!CallNotificationBuilder.areNotificationsEnabled(this) && type == TYPE_INCOMING_PRE_OFFER) {
             // start an intent for the fullscreen
             val foregroundIntent = Intent(this, WebRtcCallActivity::class.java)
@@ -769,10 +793,14 @@ class WebRtcCallService : Service(), CallManager.WebRtcListener {
         callReceiver?.let { receiver ->
             unregisterReceiver(receiver)
         }
+        wiredHeadsetStateReceiver?.let { unregisterReceiver(it) }
+        powerButtonReceiver?.let { unregisterReceiver(it) }
         networkChangedReceiver?.unregister(this)
         wantsToAnswerReceiver?.let { receiver ->
             LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver)
         }
+        powerButtonReceiver = null
+        wiredHeadsetStateReceiver = null
         networkChangedReceiver = null
         callReceiver = null
         uncaughtExceptionHandlerManager?.unregister()

app/src/main/java/org/thoughtcrime/securesms/webrtc/CallMessageProcessor.kt

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.webrtc
 
 import android.app.NotificationManager
 import android.content.Context
+import android.content.Intent
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.coroutineScope
@@ -32,6 +33,20 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
 
     companion object {
         private const val VERY_EXPIRED_TIME = 15 * 60 * 1000L
+
+        fun safeStartService(context: Context, intent: Intent) {
+            // If the foreground service crashes then it's possible for one of these intents to
+            // be started in the background (in which case 'startService' will throw a
+            // 'BackgroundServiceStartNotAllowedException' exception) so catch that case and try
+            // to re-start the service in the foreground
+            try { context.startService(intent) }
+            catch(e: Exception) {
+                try { ContextCompat.startForegroundService(context, intent) }
+                catch (e2: Exception) {
+                    Log.e("Loki", "Unable to start CallMessage intent: ${e2.message}")
+                }
+            }
+        }
     }
 
     init {
@@ -90,7 +105,7 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
     private fun incomingHangup(callMessage: CallMessage) {
         val callId = callMessage.callId ?: return
         val hangupIntent = WebRtcCallService.remoteHangupIntent(context, callId)
-        context.startService(hangupIntent)
+        safeStartService(context, hangupIntent)
     }
 
     private fun incomingAnswer(callMessage: CallMessage) {
@@ -103,7 +118,8 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
                 sdp = sdp,
                 callId = callId
         )
-        context.startService(answerIntent)
+
+        safeStartService(context, answerIntent)
     }
 
     private fun handleIceCandidates(callMessage: CallMessage) {
@@ -119,7 +135,7 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
                 callId = callId,
                 address = Address.fromSerialized(sender)
         )
-        context.startService(iceIntent)
+        safeStartService(context, iceIntent)
     }
 
     private fun incomingPreOffer(callMessage: CallMessage) {
@@ -132,7 +148,7 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
                 callId = callId,
                 callTime = callMessage.sentTimestamp!!
         )
-        context.startService(incomingIntent)
+        safeStartService(context, incomingIntent)
     }
 
     private fun incomingCall(callMessage: CallMessage) {
@@ -146,7 +162,7 @@ class CallMessageProcessor(private val context: Context, private val textSecureP
                 callId = callId,
                 callTime = callMessage.sentTimestamp!!
         )
-        context.startService(incomingIntent)
+        safeStartService(context, incomingIntent)
     }
 
     private fun CallMessage.iceCandidates(): List<IceCandidate> {

libsession/src/main/java/org/session/libsession/messaging/jobs/BatchMessageReceiveJob.kt

@@ -94,19 +94,19 @@ class BatchMessageReceiveJob(
                 } catch (e: Exception) {
                     when (e) {
                         is MessageReceiver.Error.DuplicateMessage, MessageReceiver.Error.SelfSend -> {
-                            Log.i(TAG, "Couldn't receive message, failed with error: ${e.message}")
+                            Log.i(TAG, "Couldn't receive message, failed with error: ${e.message} (id: $id)")
                         }
                         is MessageReceiver.Error -> {
                             if (!e.isRetryable) {
-                                Log.e(TAG, "Couldn't receive message, failed permanently", e)
+                                Log.e(TAG, "Couldn't receive message, failed permanently (id: $id)", e)
                             }
                             else {
-                                Log.e(TAG, "Couldn't receive message, failed", e)
+                                Log.e(TAG, "Couldn't receive message, failed (id: $id)", e)
                                 failures += messageParameters
                             }
                         }
                         else -> {
-                            Log.e(TAG, "Couldn't receive message, failed", e)
+                            Log.e(TAG, "Couldn't receive message, failed (id: $id)", e)
                             failures += messageParameters
                         }
                     }
@@ -155,11 +155,11 @@ class BatchMessageReceiveJob(
                                     else -> MessageReceiver.handle(message, proto, openGroupID)
                                 }
                             } catch (e: Exception) {
-                                Log.e(TAG, "Couldn't process message.", e)
+                                Log.e(TAG, "Couldn't process message (id: $id)", e)
                                 if (e is MessageReceiver.Error && !e.isRetryable) {
-                                    Log.e(TAG, "Message failed permanently",e)
+                                    Log.e(TAG, "Message failed permanently (id: $id)", e)
                                 } else {
-                                    Log.e(TAG, "Message failed",e)
+                                    Log.e(TAG, "Message failed (id: $id)", e)
                                     failures += parameters
                                 }
                             }
@@ -196,12 +196,12 @@ class BatchMessageReceiveJob(
     }
 
     private fun handleSuccess(dispatcherName: String) {
-        Log.i(TAG, "Completed processing of ${messages.size} messages")
+        Log.i(TAG, "Completed processing of ${messages.size} messages (id: $id)")
         this.delegate?.handleJobSucceeded(this, dispatcherName)
     }
 
     private fun handleFailure(dispatcherName: String) {
-        Log.i(TAG, "Handling failure of ${failures.size} messages (${messages.size - failures.size} processed successfully)")
+        Log.i(TAG, "Handling failure of ${failures.size} messages (${messages.size - failures.size} processed successfully) (id: $id)")
         this.delegate?.handleJobFailed(this, dispatcherName, Exception("One or more jobs resulted in failure"))
     }
 

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSender.kt

@@ -180,7 +180,20 @@ object MessageSender {
                         val hash = it["hash"] as? String
                         message.serverHash = hash
                         handleSuccessfulMessageSend(message, destination, isSyncMessage)
-                        val shouldNotify = ((message is VisibleMessage || message is UnsendRequest || message is CallMessage) && !isSyncMessage)
+
+                        val shouldNotify: Boolean = when (message) {
+                            is VisibleMessage, is UnsendRequest -> !isSyncMessage
+                            is CallMessage -> {
+                                // Note: Other 'CallMessage' types are too big to send as push notifications
+                                // so only send the 'preOffer' message as a notification
+                                when (message.type) {
+                                    SignalServiceProtos.CallMessage.Type.PRE_OFFER -> true
+                                    else -> false
+                                }
+                            }
+                            else -> false
+                        }
+
                         /*
                         if (message is ClosedGroupControlMessage && message.kind is ClosedGroupControlMessage.Kind.New) {
                             shouldNotify = true

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/pollers/ClosedGroupPollerV2.kt

@@ -54,10 +54,9 @@ class ClosedGroupPollerV2 {
         setUpPolling(groupPublicKey)
     }
 
-    fun stop() {
-        val storage = MessagingModuleConfiguration.shared.storage
-        val allGroupPublicKeys = storage.getAllClosedGroupPublicKeys()
-        allGroupPublicKeys.iterator().forEach { stopPolling(it) }
+    fun stopAll() {
+        futures.forEach { it.value.cancel(false) }
+        isPolling.forEach { isPolling[it.key] = false }
     }
 
     fun stopPolling(groupPublicKey: String) {

libsession/src/main/java/org/session/libsession/snode/OnionRequestAPI.kt

@@ -26,6 +26,7 @@ import org.session.libsignal.utilities.ThreadUtils
 import org.session.libsignal.utilities.recover
 import org.session.libsignal.utilities.toHexString
 import java.util.Date
+import java.util.concurrent.atomic.AtomicReference
 import kotlin.collections.set
 
 private typealias Path = List<Snode>
@@ -43,13 +44,27 @@ object OnionRequestAPI {
     private val snodeFailureCount = mutableMapOf<Snode, Int>()
 
     var guardSnodes = setOf<Snode>()
+    var _paths: AtomicReference<List<Path>?> = AtomicReference(null)
     var paths: List<Path> // Not a set to ensure we consistently show the same path to the user
-        get() = database.getOnionRequestPaths()
+        get() {
+            val paths = _paths.get()
+
+            if (paths != null) { return paths }
+
+            // Storing this in an atomic variable as it was causing a number of background
+            // ANRs when this value was accessed via the main thread after tapping on
+            // a notification)
+            val result = database.getOnionRequestPaths()
+            _paths.set(result)
+            return result
+        }
         set(newValue) {
             if (newValue.isEmpty()) {
                 database.clearOnionRequestPaths()
+                _paths.set(null)
             } else {
                 database.setOnionRequestPaths(newValue)
+                _paths.set(newValue)
             }
         }