Getting rid of .get call on promise

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

@@ -115,6 +115,7 @@ import javax.inject.Inject;
 
 import dagger.hilt.EntryPoints;
 import dagger.hilt.android.HiltAndroidApp;
+import kotlin.Unit;
 import network.loki.messenger.BuildConfig;
 import network.loki.messenger.R;
 
@@ -307,6 +308,7 @@ public class ApplicationContext extends Application implements DefaultLifecycleO
             startPollingIfNeeded();
 
             OpenGroupManager.INSTANCE.startPolling();
+            return Unit.INSTANCE;
         });
 
         // fetch last version data

app/src/main/java/org/thoughtcrime/securesms/conversation/start/newmessage/NewMessageViewModel.kt

@@ -6,7 +6,6 @@ import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import java.util.concurrent.TimeoutException
 import javax.inject.Inject
-import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.channels.BufferOverflow
 import kotlinx.coroutines.flow.MutableSharedFlow
@@ -14,12 +13,12 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.update
-import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withTimeout
 import network.loki.messenger.R
 import org.session.libsession.snode.SnodeAPI
+import org.session.libsession.snode.utilities.await
 import org.session.libsignal.utilities.PublicKeyValidation
-import org.session.libsignal.utilities.timeout
 import org.thoughtcrime.securesms.ui.GetString
 
 @HiltViewModel
@@ -68,12 +67,14 @@ internal class NewMessageViewModel @Inject constructor(
         // This could be an ONS name
         _state.update { it.copy(isTextErrorColor = false, error = null, loading = true) }
 
-        loadOnsJob = viewModelScope.launch(Dispatchers.IO) {
+        loadOnsJob = viewModelScope.launch {
             try {
-                val publicKey = SnodeAPI.getAccountID(ons).timeout(30_000).get()
+                val publicKey = withTimeout(30_000L, {
-                if (isActive) onPublicKey(publicKey)
+                    SnodeAPI.getAccountID(ons).await()
+                })
+                onPublicKey(publicKey)
             } catch (e: Exception) {
-                if (isActive) onError(e)
+                onError(e)
             }
         }
     }

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

@@ -9,7 +9,11 @@ import android.text.SpannableStringBuilder
 import android.text.style.StyleSpan
 import android.widget.Toast
 import androidx.fragment.app.DialogFragment
+import androidx.lifecycle.lifecycleScope
 import com.squareup.phrase.Phrase
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import network.loki.messenger.R
 import org.session.libsession.database.StorageProtocol
 import org.session.libsession.utilities.OpenGroupUrlParser
@@ -43,14 +47,23 @@ class JoinOpenGroupDialog(private val name: String, private val url: String) : D
     private fun join() {
         val openGroup = OpenGroupUrlParser.parseUrl(url)
         val activity = requireActivity()
-        ThreadUtils.queue {
+        lifecycleScope.launch {
             try {
-                openGroup.apply { OpenGroupManager.add(server, room, serverPublicKey, activity) }
+                withContext(Dispatchers.Default) {
+                    OpenGroupManager.add(
+                        server = openGroup.server,
+                        room = openGroup.room,
+                        publicKey = openGroup.serverPublicKey,
+                        context = activity
+                    )
+
                     storage.onOpenGroupAdded(openGroup.server, openGroup.room)
+                }
             } catch (e: Exception) {
                 Toast.makeText(activity, R.string.communityErrorDescription, Toast.LENGTH_SHORT).show()
             }
         }
+
         dismiss()
     }
 }

app/src/main/java/org/thoughtcrime/securesms/database/MmsDatabase.kt

@@ -328,7 +328,7 @@ class MmsDatabase(context: Context, databaseHelper: SQLCipherOpenHelper) : Messa
         contentValues.put(HAS_MENTION, 0)
         database.update(TABLE_NAME, contentValues, ID_WHERE, arrayOf(messageId.toString()))
         val attachmentDatabase = get(context).attachmentDatabase()
-        queue(Runnable { attachmentDatabase.deleteAttachmentsForMessage(messageId) })
+        queue { attachmentDatabase.deleteAttachmentsForMessage(messageId) }
         val threadId = getThreadIdForMessage(messageId)
 
         markAs(messageId, MmsSmsColumns.Types.BASE_DELETED_TYPE, threadId)
@@ -889,7 +889,7 @@ class MmsDatabase(context: Context, databaseHelper: SQLCipherOpenHelper) : Messa
         }
         val idsAsString = queryBuilder.toString()
         val attachmentDatabase = get(context).attachmentDatabase()
-        queue(Runnable { attachmentDatabase.deleteAttachmentsForMessages(messageIds) })
+        queue { attachmentDatabase.deleteAttachmentsForMessages(messageIds) }
         val groupReceiptDatabase = get(context).groupReceiptDatabase()
         groupReceiptDatabase.deleteRowsForMessages(messageIds)
         val database = databaseHelper.writableDatabase
@@ -906,7 +906,7 @@ class MmsDatabase(context: Context, databaseHelper: SQLCipherOpenHelper) : Messa
     override fun deleteMessage(messageId: Long): Boolean {
         val threadId = getThreadIdForMessage(messageId)
         val attachmentDatabase = get(context).attachmentDatabase()
-        queue(Runnable { attachmentDatabase.deleteAttachmentsForMessage(messageId) })
+        queue { attachmentDatabase.deleteAttachmentsForMessage(messageId) }
         val groupReceiptDatabase = get(context).groupReceiptDatabase()
         groupReceiptDatabase.deleteRowsForMessage(messageId)
         val database = databaseHelper.writableDatabase
@@ -925,7 +925,7 @@ class MmsDatabase(context: Context, databaseHelper: SQLCipherOpenHelper) : Messa
         val attachmentDatabase = get(context).attachmentDatabase()
         val groupReceiptDatabase = get(context).groupReceiptDatabase()
 
-        queue(Runnable { attachmentDatabase.deleteAttachmentsForMessages(messageIds) })
+        queue { attachmentDatabase.deleteAttachmentsForMessages(messageIds) }
         groupReceiptDatabase.deleteRowsForMessages(messageIds)
 
         val db = databaseHelper.writableDatabase

app/src/main/java/org/thoughtcrime/securesms/dependencies/ConfigFactory.kt

@@ -222,7 +222,7 @@ class ConfigFactory @Inject constructor(
     private val groupConfigs = ConcurrentHashMap<AccountId, GroupConfigsImpl>()
 
     private val _configUpdateNotifications = MutableSharedFlow<ConfigUpdateNotification>(
-        extraBufferCapacity = 1,
+        extraBufferCapacity = 5, // The notifications are normally important so we can afford to buffer a few
         onBufferOverflow = BufferOverflow.SUSPEND
     )
     override val configUpdateNotifications get() = _configUpdateNotifications
@@ -260,15 +260,15 @@ class ConfigFactory @Inject constructor(
      * @param cb A function that takes a [UserConfigsImpl] and returns a pair of the result of the operation and a boolean indicating if the configs were changed.
      */
     private fun <T> doWithMutableUserConfigs(cb: (UserConfigsImpl) -> Pair<T, Boolean>): T {
-        return withUserConfigs { configs ->
+        val (result, changed) = withUserConfigs { configs ->
-            val (result, changed) = cb(configs as UserConfigsImpl)
+            cb(configs as UserConfigsImpl)
+        }
 
         if (changed) {
             _configUpdateNotifications.tryEmit(ConfigUpdateNotification.UserConfigs)
         }
 
-            result
+        return result
-        }
     }
 
     override fun mergeUserConfigs(
@@ -319,8 +319,9 @@ class ConfigFactory @Inject constructor(
     }
 
     private fun <T> doWithMutableGroupConfigs(groupId: AccountId, cb: (GroupConfigsImpl) -> Pair<T, Boolean>): T {
-        return withGroupConfigs(groupId) { configs ->
+        val (result, changed) =  withGroupConfigs(groupId) { configs ->
-            val (result, changed) = cb(configs as GroupConfigsImpl)
+            cb(configs as GroupConfigsImpl)
+        }
 
         Log.d("ConfigFactory", "Group updated? $groupId: $changed")
 
@@ -330,8 +331,7 @@ class ConfigFactory @Inject constructor(
             }
         }
 
-            result
+        return result
-        }
     }
 
     override fun <T> withMutableGroupConfigs(

app/src/main/java/org/thoughtcrime/securesms/home/HomeActivity.kt

@@ -240,7 +240,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
         }
 
         lifecycleScope.launchWhenStarted {
-            launch(Dispatchers.IO) {
+            launch(Dispatchers.Default) {
                 // Double check that the long poller is up
                 (applicationContext as ApplicationContext).startPollingIfNeeded()
                 // update things based on TextSecurePrefs (profile info etc)
@@ -516,7 +516,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
                 .put(NAME_KEY, thread.recipient.name)
                 .format())
             dangerButton(R.string.block, R.string.AccessibilityId_blockConfirm) {
-                lifecycleScope.launch(Dispatchers.IO) {
+                lifecycleScope.launch(Dispatchers.Default) {
                     storage.setBlocked(listOf(thread.recipient), true)
 
                     withContext(Dispatchers.Main) {
@@ -536,7 +536,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
             title(R.string.blockUnblock)
             text(Phrase.from(context, R.string.blockUnblockName).put(NAME_KEY, thread.recipient.name).format())
             dangerButton(R.string.blockUnblock, R.string.AccessibilityId_unblockConfirm) {
-                lifecycleScope.launch(Dispatchers.IO) {
+                lifecycleScope.launch(Dispatchers.Default) {
                     storage.setBlocked(listOf(thread.recipient), false)
                     withContext(Dispatchers.Main) {
                         binding.recyclerView.adapter!!.notifyDataSetChanged()
@@ -549,7 +549,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
 
     private fun setConversationMuted(thread: ThreadRecord, isMuted: Boolean) {
         if (!isMuted) {
-            lifecycleScope.launch(Dispatchers.IO) {
+            lifecycleScope.launch(Dispatchers.Default) {
                 recipientDatabase.setMuted(thread.recipient, 0)
                 withContext(Dispatchers.Main) {
                     binding.recyclerView.adapter!!.notifyDataSetChanged()
@@ -557,7 +557,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
             }
         } else {
             showMuteDialog(this) { until ->
-                lifecycleScope.launch(Dispatchers.IO) {
+                lifecycleScope.launch(Dispatchers.Default) {
                     Log.d("", "**** until: $until")
                     recipientDatabase.setMuted(thread.recipient, until)
                     withContext(Dispatchers.Main) {
@@ -569,7 +569,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
     }
 
     private fun setNotifyType(thread: ThreadRecord, newNotifyType: Int) {
-        lifecycleScope.launch(Dispatchers.IO) {
+        lifecycleScope.launch(Dispatchers.Default) {
             recipientDatabase.setNotifyType(thread.recipient, newNotifyType)
             withContext(Dispatchers.Main) {
                 binding.recyclerView.adapter!!.notifyDataSetChanged()
@@ -578,14 +578,14 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
     }
 
     private fun setConversationPinned(threadId: Long, pinned: Boolean) {
-        lifecycleScope.launch(Dispatchers.IO) {
+        lifecycleScope.launch(Dispatchers.Default) {
             storage.setPinned(threadId, pinned)
             homeViewModel.tryReload()
         }
     }
 
     private fun markAllAsRead(thread: ThreadRecord) {
-        ThreadUtils.queue {
+        lifecycleScope.launch(Dispatchers.Default) {
             MessagingModuleConfiguration.shared.storage.markConversationAsRead(thread.threadId, SnodeAPI.nowWithOffset)
         }
     }
@@ -656,7 +656,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
                             context
                         )
                     } else {
-                        lifecycleScope.launch(Dispatchers.IO) {
+                        lifecycleScope.launch(Dispatchers.Default) {
                             threadDb.deleteConversation(threadID)
                         }
                     }

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

@@ -6,12 +6,15 @@ import android.content.Context
 import android.content.Intent
 import android.os.AsyncTask
 import androidx.core.app.NotificationManagerCompat
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import org.session.libsession.database.userAuth
 import org.session.libsession.messaging.MessagingModuleConfiguration.Companion.shared
 import org.session.libsession.messaging.messages.control.ReadReceipt
 import org.session.libsession.messaging.sending_receiving.MessageSender.send
 import org.session.libsession.snode.SnodeAPI
 import org.session.libsession.snode.SnodeAPI.nowWithOffset
+import org.session.libsession.snode.utilities.await
 import org.session.libsession.utilities.SSKEnvironment
 import org.session.libsession.utilities.TextSecurePreferences.Companion.isReadReceiptsEnabled
 import org.session.libsession.utilities.associateByNotNull
@@ -72,9 +75,11 @@ class MarkReadReceiver : BroadcastReceiver() {
                 }
                 .forEach { messageExpirationManager.startDisappearAfterRead(it.timetamp, it.address.serialize()) }
 
-            hashToDisappearAfterReadMessage(context, markedReadMessages)?.let {
+            hashToDisappearAfterReadMessage(context, markedReadMessages)?.let { hashToMessages ->
-                fetchUpdatedExpiriesAndScheduleDeletion(context, it)
+                GlobalScope.launch {
-                shortenExpiryOfDisappearingAfterRead(context, it)
+                    fetchUpdatedExpiriesAndScheduleDeletion(context, hashToMessages)
+                    shortenExpiryOfDisappearingAfterRead(hashToMessages)
+                }
             }
         }
 
@@ -91,7 +96,6 @@ class MarkReadReceiver : BroadcastReceiver() {
         }
 
         private fun shortenExpiryOfDisappearingAfterRead(
-            context: Context,
             hashToMessage: Map<String, MarkedMessageInfo>
         ) {
             hashToMessage.entries
@@ -125,12 +129,12 @@ class MarkReadReceiver : BroadcastReceiver() {
                 }
         }
 
-        private fun fetchUpdatedExpiriesAndScheduleDeletion(
+        private suspend fun fetchUpdatedExpiriesAndScheduleDeletion(
             context: Context,
             hashToMessage: Map<String, MarkedMessageInfo>
         ) {
             @Suppress("UNCHECKED_CAST")
-            val expiries = SnodeAPI.getExpiries(hashToMessage.keys.toList(), shared.storage.userAuth!!).get()["expiries"] as Map<String, Long>
+            val expiries = SnodeAPI.getExpiries(hashToMessage.keys.toList(), shared.storage.userAuth!!).await()["expiries"] as Map<String, Long>
             hashToMessage.forEach { (hash, info) -> expiries[hash]?.let { scheduleDeletion(context, info.expirationInfo, it - info.expirationInfo.expireStarted) } }
         }
 

app/src/main/java/org/thoughtcrime/securesms/notifications/OptimizedMessageNotifier.java

@@ -16,6 +16,8 @@ import org.thoughtcrime.securesms.groups.OpenGroupManager;
 
 import java.util.concurrent.TimeUnit;
 
+import kotlin.Unit;
+
 public class OptimizedMessageNotifier implements MessageNotifier {
   private final MessageNotifier         wrapped;
   private final Debouncer               debouncer;
@@ -118,7 +120,10 @@ public class OptimizedMessageNotifier implements MessageNotifier {
 
   private void performOnBackgroundThreadIfNeeded(Runnable r) {
     if (Looper.myLooper() == Looper.getMainLooper()) {
-      ThreadUtils.queue(r);
+      ThreadUtils.queue(() -> {
+        r.run();
+        return Unit.INSTANCE;
+      });
     } else {
       r.run();
     }

app/src/main/java/org/thoughtcrime/securesms/util/IP2Country.kt

@@ -6,6 +6,8 @@ import android.content.Intent
 import android.content.IntentFilter
 import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import com.opencsv.CSVReader
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import org.session.libsession.snode.OnionRequestAPI
 import org.session.libsignal.utilities.Log
 import org.session.libsignal.utilities.ThreadUtils
@@ -133,7 +135,7 @@ class IP2Country private constructor(private val context: Context) {
     }
 
     private fun populateCacheIfNeeded() {
-        ThreadUtils.queue {
+        GlobalScope.launch {
             OnionRequestAPI.paths.iterator().forEach { path ->
                 path.iterator().forEach { snode ->
                     cacheCountryForIP(snode.ip) // Preload if needed

libsession-util/src/main/cpp/conversation.h

@@ -53,7 +53,6 @@ inline jobject serialize_closed_group(JNIEnv* env, session::config::convo::group
 }
 
 inline jobject serialize_any(JNIEnv *env, session::config::convo::any any) {
-    __android_log_print(ANDROID_LOG_WARN, "DESERIALIE", "deserializing any");
     if (auto* dm = std::get_if<session::config::convo::one_to_one>(&any)) {
         return serialize_one_to_one(env, *dm);
     } else if (auto* og = std::get_if<session::config::convo::community>(&any)) {

libsession/src/main/java/org/session/libsession/messaging/configs/ConfigSyncHandler.kt

@@ -6,10 +6,14 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.asCoroutineDispatcher
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import network.loki.messenger.libsession_util.util.ConfigPush
 import org.session.libsession.database.StorageProtocol
 import org.session.libsession.database.userAuth
@@ -29,6 +33,7 @@ import org.session.libsignal.utilities.Base64
 import org.session.libsignal.utilities.Log
 import org.session.libsignal.utilities.Namespace
 import org.session.libsignal.utilities.Snode
+import java.util.concurrent.Executors
 import javax.inject.Inject
 
 private const val TAG = "ConfigSyncHandler"
@@ -44,34 +49,37 @@ class ConfigSyncHandler @Inject constructor(
 ) {
     private var job: Job? = null
 
-    @OptIn(ExperimentalCoroutinesApi::class, DelicateCoroutinesApi::class)
+    @OptIn(DelicateCoroutinesApi::class)
     fun start() {
         require(job == null) { "Already started" }
 
         job = GlobalScope.launch {
-            val groupDispatchers = hashMapOf<AccountId, CoroutineDispatcher>()
+            val groupMutex = hashMapOf<AccountId, Mutex>()
-            val userConfigDispatcher = Dispatchers.Default.limitedParallelism(1)
+            val userMutex = Mutex()
 
-            configFactory.configUpdateNotifications.collect { changes ->
+            configFactory.configUpdateNotifications
+                .collect { changes ->
                 try {
                     when (changes) {
                         is ConfigUpdateNotification.GroupConfigsDeleted -> {
-                            groupDispatchers.remove(changes.groupId)
+                            groupMutex.remove(changes.groupId)
                         }
 
                         is ConfigUpdateNotification.GroupConfigsUpdated -> {
                             // Group config pushing is limited to its own dispatcher
-                            launch(groupDispatchers.getOrPut(changes.groupId) {
+                            launch {
-                                Dispatchers.Default.limitedParallelism(1)
+                                groupMutex.getOrPut(changes.groupId) { Mutex() }.withLock {
-                            }) {
                                     pushGroupConfigsChangesIfNeeded(changes.groupId)
                                 }
                             }
+                        }
 
-                        ConfigUpdateNotification.UserConfigs -> launch(userConfigDispatcher) {
+                        ConfigUpdateNotification.UserConfigs -> launch {
+                            userMutex.withLock {
                                 pushUserConfigChangesIfNeeded()
                             }
                         }
+                    }
                 } catch (e: Exception) {
                     Log.e(TAG, "Error handling config update", e)
                 }

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

@@ -12,6 +12,7 @@ import org.session.libsession.messaging.messages.Message
 import org.session.libsession.messaging.open_groups.OpenGroupApi
 import org.session.libsession.messaging.sending_receiving.MessageSender
 import org.session.libsession.messaging.utilities.Data
+import org.session.libsession.snode.utilities.await
 import org.session.libsession.utilities.DecodedAudio
 import org.session.libsession.utilities.InputStreamMediaDataSource
 import org.session.libsession.utilities.UploadResult
@@ -76,7 +77,7 @@ class AttachmentUploadJob(val attachmentID: Long, val threadID: String, val mess
         }
     }
 
-    private fun upload(attachment: SignalServiceAttachmentStream, server: String, encrypt: Boolean, upload: (ByteArray) -> Promise<Long, Exception>): Pair<ByteArray, UploadResult> {
+    private suspend fun upload(attachment: SignalServiceAttachmentStream, server: String, encrypt: Boolean, upload: (ByteArray) -> Promise<Long, Exception>): Pair<ByteArray, UploadResult> {
         // Key
         val key = if (encrypt) Util.getSecretBytes(64) else ByteArray(0)
         // Length
@@ -102,7 +103,7 @@ class AttachmentUploadJob(val attachmentID: Long, val threadID: String, val mess
         drb.writeTo(b)
         val data = b.readByteArray()
         // Upload the data
-        val id = upload(data).get()
+        val id = upload(data).await()
         val digest = drb.transmittedDigest
         // Return
         return Pair(key, UploadResult(id, "${server}/file/$id", digest))

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

@@ -24,7 +24,7 @@ class JobQueue : JobDelegate {
     private var hasResumedPendingJobs = false // Just for debugging
     private val jobTimestampMap = ConcurrentHashMap<Long, AtomicInteger>()
 
-    private val scope = GlobalScope
+    private val scope: CoroutineScope = GlobalScope
     private val queue = Channel<Job>(UNLIMITED)
     private val pendingJobIds = mutableSetOf<String>()
 
@@ -34,9 +34,8 @@ class JobQueue : JobDelegate {
 
     private fun CoroutineScope.processWithOpenGroupDispatcher(
         channel: Channel<Job>,
-        dispatcher: CoroutineDispatcher,
         name: String
-    ) = launch(dispatcher) {
+    ) = launch {
         for (job in channel) {
             if (!isActive) break
             val openGroupId = when (job) {
@@ -54,7 +53,7 @@ class JobQueue : JobDelegate {
                 val groupChannel = if (!openGroupChannels.containsKey(openGroupId)) {
                     Log.d("OpenGroupDispatcher", "Creating ${openGroupId.hashCode()} channel")
                     val newGroupChannel = Channel<Job>(UNLIMITED)
-                    launch(dispatcher) {
+                    launch {
                         for (groupJob in newGroupChannel) {
                             if (!isActive) break
                             groupJob.process(name)
@@ -74,14 +73,13 @@ class JobQueue : JobDelegate {
 
     private fun CoroutineScope.processWithDispatcher(
         channel: Channel<Job>,
-        dispatcher: CoroutineDispatcher,
         name: String,
         asynchronous: Boolean = true
-    ) = launch(dispatcher) {
+    ) = launch {
         for (job in channel) {
             if (!isActive) break
             if (asynchronous) {
-                launch(dispatcher) {
+                launch {
                     job.process(name)
                 }
             } else {
@@ -111,10 +109,10 @@ class JobQueue : JobDelegate {
             val mediaQueue = Channel<Job>(capacity = UNLIMITED)
             val openGroupQueue = Channel<Job>(capacity = UNLIMITED)
 
-            val receiveJob = processWithDispatcher(rxQueue, Dispatchers.Default.limitedParallelism(1), "rx", asynchronous = false)
+            val receiveJob = processWithDispatcher(rxQueue, "rx", asynchronous = false)
-            val txJob = processWithDispatcher(txQueue, Dispatchers.Default.limitedParallelism(1), "tx")
+            val txJob = processWithDispatcher(txQueue, "tx")
-            val mediaJob = processWithDispatcher(mediaQueue, Dispatchers.Default.limitedParallelism(4), "media")
+            val mediaJob = processWithDispatcher(mediaQueue, "media")
-            val openGroupJob = processWithOpenGroupDispatcher(openGroupQueue, Dispatchers.Default.limitedParallelism(8), "openGroup")
+            val openGroupJob = processWithOpenGroupDispatcher(openGroupQueue, "openGroup")
 
             while (isActive) {
                 when (val job = queue.receive()) {

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

@@ -7,6 +7,7 @@ import org.session.libsession.messaging.messages.Message
 import org.session.libsession.messaging.sending_receiving.MessageReceiver
 import org.session.libsession.messaging.sending_receiving.handle
 import org.session.libsession.messaging.utilities.Data
+import org.session.libsession.snode.utilities.await
 import org.session.libsignal.utilities.Log
 
 class MessageReceiveJob(val data: ByteArray, val serverHash: String? = null, val openGroupMessageServerID: Long? = null, val openGroupID: String? = null) : Job {
@@ -27,7 +28,7 @@ class MessageReceiveJob(val data: ByteArray, val serverHash: String? = null, val
     }
 
     override suspend fun execute(dispatcherName: String) {
-        executeAsync(dispatcherName).get()
+        executeAsync(dispatcherName).await()
     }
 
     fun executeAsync(dispatcherName: String): Promise<Unit, Exception> {

libsession/src/main/java/org/session/libsession/messaging/open_groups/OpenGroupApi.kt

@@ -8,7 +8,9 @@ import com.fasterxml.jackson.databind.annotation.JsonNaming
 import com.fasterxml.jackson.databind.type.TypeFactory
 import com.goterl.lazysodium.interfaces.GenericHash
 import com.goterl.lazysodium.interfaces.Sign
+import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.launch
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.functional.map
 import okhttp3.Headers.Companion.toHeaders
@@ -22,6 +24,8 @@ import org.session.libsession.messaging.utilities.SodiumUtilities.sodium
 import org.session.libsession.snode.OnionRequestAPI
 import org.session.libsession.snode.OnionResponse
 import org.session.libsession.snode.SnodeAPI
+import org.session.libsession.snode.utilities.asyncPromise
+import org.session.libsession.snode.utilities.await
 import org.session.libsession.utilities.TextSecurePreferences
 import org.session.libsignal.utilities.AccountId
 import org.session.libsignal.utilities.Base64.decode
@@ -858,7 +862,9 @@ object OpenGroupApi {
     }
 
     fun getDefaultRoomsIfNeeded(): Promise<List<DefaultGroup>, Exception> {
-        return getAllRooms().map { groups ->
+        return GlobalScope.asyncPromise {
+            val groups = getAllRooms().await()
+
             val earlyGroups = groups.map { group ->
                 DefaultGroup(group.token, group.name, null)
             }
@@ -873,15 +879,13 @@ object OpenGroupApi {
             }
             groups.map { group ->
                 val image = try {
-                    images[group.token]!!.get()
+                    images[group.token]!!.await()
                 } catch (e: Exception) {
                     // No image or image failed to download
                     null
                 }
                 DefaultGroup(group.token, group.name, image)
-            }
+            }.also(defaultRooms::tryEmit)
-        }.success { new ->
-            defaultRooms.tryEmit(new)
         }
     }
 

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

@@ -3,6 +3,7 @@
 package org.session.libsession.messaging.sending_receiving
 
 import com.google.protobuf.ByteString
+import kotlinx.coroutines.GlobalScope
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
 import org.session.libsession.messaging.MessagingModuleConfiguration
@@ -14,6 +15,8 @@ import org.session.libsession.messaging.sending_receiving.MessageSender.Error
 import org.session.libsession.messaging.sending_receiving.notifications.PushRegistryV1
 import org.session.libsession.messaging.sending_receiving.pollers.LegacyClosedGroupPollerV2
 import org.session.libsession.snode.SnodeAPI
+import org.session.libsession.snode.utilities.asyncPromise
+import org.session.libsession.snode.utilities.await
 import org.session.libsession.utilities.Address
 import org.session.libsession.utilities.Address.Companion.fromSerialized
 import org.session.libsession.utilities.Device
@@ -41,10 +44,8 @@ fun MessageSender.create(
     name: String,
     members: Collection<String>
 ): Promise<String, Exception> {
-    val deferred = deferred<String, Exception>()
+    return GlobalScope.asyncPromise {
-    ThreadUtils.queue {
         // Prepare
-        val context = MessagingModuleConfiguration.shared.context
         val storage = MessagingModuleConfiguration.shared.storage
         val userPublicKey = storage.getUserPublicKey()!!
         val membersAsData = members.map { ByteString.copyFrom(Hex.fromStringCondensed(it)) }
@@ -83,7 +84,7 @@ fun MessageSender.create(
             val closedGroupControlMessage = ClosedGroupControlMessage(closedGroupUpdateKind, groupID)
             closedGroupControlMessage.sentTimestamp = sentTime
             try {
-                sendNonDurably(closedGroupControlMessage, Address.fromSerialized(member), member == ourPubKey).get()
+                sendNonDurably(closedGroupControlMessage, Address.fromSerialized(member), member == ourPubKey).await()
             } catch (e: Exception) {
                 // We failed to properly create the group so delete it's associated data (in the past
                 // we didn't create this data until the messages successfully sent but this resulted
@@ -91,8 +92,7 @@ fun MessageSender.create(
                 storage.removeClosedGroupPublicKey(groupPublicKey)
                 storage.removeAllClosedGroupEncryptionKeyPairs(groupPublicKey)
                 storage.deleteConversation(threadID)
-                deferred.reject(e)
+                throw e
-                return@queue
             }
         }
 
@@ -102,11 +102,8 @@ fun MessageSender.create(
         PushRegistryV1.register(device = device, publicKey = userPublicKey)
         // Start polling
         LegacyClosedGroupPollerV2.shared.startPolling(groupPublicKey)
-        // Fulfill the promise
+        groupID
-        deferred.resolve(groupID)
     }
-    // Return
-    return deferred.promise
 }
 
 fun MessageSender.setName(groupPublicKey: String, newName: String) {

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/pollers/LegacyClosedGroupPollerV2.kt

@@ -1,5 +1,6 @@
 package org.session.libsession.messaging.sending_receiving.pollers
 
+import kotlinx.coroutines.GlobalScope
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.functional.bind
 import nl.komponents.kovenant.functional.map
@@ -9,6 +10,8 @@ import org.session.libsession.messaging.jobs.BatchMessageReceiveJob
 import org.session.libsession.messaging.jobs.JobQueue
 import org.session.libsession.messaging.jobs.MessageReceiveParameters
 import org.session.libsession.snode.SnodeAPI
+import org.session.libsession.snode.utilities.asyncPromise
+import org.session.libsession.snode.utilities.await
 import org.session.libsession.utilities.GroupUtil
 import org.session.libsignal.crypto.secureRandomOrNull
 import org.session.libsignal.utilities.Log
@@ -110,13 +113,13 @@ class LegacyClosedGroupPollerV2 {
             when {
                 currentForkInfo.defaultRequiresAuth() -> SnodeAPI.getUnauthenticatedRawMessages(snode, groupPublicKey, namespace = Namespace.UNAUTHENTICATED_CLOSED_GROUP())
                     .map { SnodeAPI.parseRawMessagesResponse(it, snode, groupPublicKey, Namespace.UNAUTHENTICATED_CLOSED_GROUP()) }
-                currentForkInfo.hasNamespaces() -> task {
+                currentForkInfo.hasNamespaces() -> GlobalScope.asyncPromise {
                     val unAuthed = SnodeAPI.getUnauthenticatedRawMessages(snode, groupPublicKey, namespace = Namespace.UNAUTHENTICATED_CLOSED_GROUP())
                         .map { SnodeAPI.parseRawMessagesResponse(it, snode, groupPublicKey, Namespace.UNAUTHENTICATED_CLOSED_GROUP()) }
                     val default = SnodeAPI.getUnauthenticatedRawMessages(snode, groupPublicKey, namespace = Namespace.DEFAULT())
                         .map { SnodeAPI.parseRawMessagesResponse(it, snode, groupPublicKey, Namespace.DEFAULT()) }
-                    val unAuthedResult = unAuthed.get()
+                    val unAuthedResult = unAuthed.await()
-                    val defaultResult = default.get()
+                    val defaultResult = default.await()
                     val format = DateFormat.getTimeInstance()
                     if (unAuthedResult.isNotEmpty() || defaultResult.isNotEmpty()) {
                         Log.d("Poller", "@${format.format(Date())}Polled ${unAuthedResult.size} from -10, ${defaultResult.size} from 0")

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

@@ -25,12 +25,12 @@ import org.session.libsession.messaging.sending_receiving.MessageReceiver
 import org.session.libsession.messaging.sending_receiving.handle
 import org.session.libsession.messaging.sending_receiving.handleOpenGroupReactions
 import org.session.libsession.snode.OnionRequestAPI
+import org.session.libsession.snode.utilities.successBackground
 import org.session.libsession.utilities.Address
 import org.session.libsession.utilities.GroupUtil
 import org.session.libsignal.protos.SignalServiceProtos
 import org.session.libsignal.utilities.Base64
 import org.session.libsignal.utilities.Log
-import org.session.libsignal.utilities.successBackground
 import java.util.UUID
 import java.util.concurrent.ScheduledExecutorService
 import java.util.concurrent.ScheduledFuture

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

@@ -2,14 +2,12 @@ package org.session.libsession.messaging.sending_receiving.pollers
 
 import android.util.SparseArray
 import androidx.core.util.valueIterator
-import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.runBlocking
 import nl.komponents.kovenant.Deferred
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
 import nl.komponents.kovenant.functional.bind
 import nl.komponents.kovenant.resolve
-import nl.komponents.kovenant.task
 import org.session.libsession.database.StorageProtocol
 import org.session.libsession.database.userAuth
 import org.session.libsession.messaging.MessagingModuleConfiguration
@@ -19,6 +17,7 @@ import org.session.libsession.messaging.jobs.MessageReceiveParameters
 import org.session.libsession.snode.RawResponse
 import org.session.libsession.snode.SnodeAPI
 import org.session.libsession.snode.SnodeModule
+import org.session.libsession.snode.utilities.asyncPromise
 import org.session.libsession.utilities.ConfigFactoryProtocol
 import org.session.libsession.utilities.ConfigMessage
 import org.session.libsession.utilities.UserConfigType
@@ -177,7 +176,7 @@ class Poller(
         return poll(snode, deferred)
     }
 
-    private fun pollUserProfile(snode: Snode, deferred: Deferred<Unit, Exception>): Promise<Unit, Exception> = task {
+    private fun pollUserProfile(snode: Snode, deferred: Deferred<Unit, Exception>): Promise<Unit, Exception> = GlobalScope.asyncPromise {
         val requests = mutableListOf<SnodeAPI.SnodeBatchRequestInfo>()
         val hashesToExtend = mutableSetOf<String>()
         val userAuth = requireNotNull(MessagingModuleConfiguration.shared.storage.userAuth)
@@ -236,8 +235,7 @@ class Poller(
 
     private fun poll(snode: Snode, deferred: Deferred<Unit, Exception>): Promise<Unit, Exception> {
         if (!hasStarted) { return Promise.ofFail(PromiseCanceledException()) }
-        return task {
+        return GlobalScope.asyncPromise {
-            runBlocking(Dispatchers.IO) {
             val userAuth = requireNotNull(MessagingModuleConfiguration.shared.storage.userAuth)
             val requestSparseArray = SparseArray<SnodeAPI.SnodeBatchRequestInfo>()
             // get messages
@@ -349,6 +347,5 @@ class Poller(
             }
         }
     }
-    }
     // endregion
 }

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

@@ -1,5 +1,8 @@
 package org.session.libsession.snode
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import nl.komponents.kovenant.Deferred
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.all
@@ -8,6 +11,7 @@ import nl.komponents.kovenant.functional.bind
 import nl.komponents.kovenant.functional.map
 import okhttp3.Request
 import org.session.libsession.messaging.file_server.FileServerApi
+import org.session.libsession.snode.utilities.asyncPromise
 import org.session.libsession.utilities.AESGCM
 import org.session.libsession.utilities.AESGCM.EncryptionResult
 import org.session.libsession.utilities.getBodyForOnionRequest
@@ -27,6 +31,7 @@ import org.session.libsignal.utilities.recover
 import org.session.libsignal.utilities.toHexString
 import java.util.concurrent.atomic.AtomicReference
 import kotlin.collections.set
+import kotlin.coroutines.EmptyCoroutineContext
 
 private typealias Path = List<Snode>
 
@@ -112,26 +117,14 @@ object OnionRequestAPI {
      * Tests the given snode. The returned promise errors out if the snode is faulty; the promise is fulfilled otherwise.
      */
     private fun testSnode(snode: Snode): Promise<Unit, Exception> {
-        val deferred = deferred<Unit, Exception>()
+        return GlobalScope.asyncPromise { // No need to block the shared context for this
-        ThreadUtils.queue { // No need to block the shared context for this
             val url = "${snode.address}:${snode.port}/get_stats/v1"
-            try {
             val response = HTTP.execute(HTTP.Verb.GET, url, 3).decodeToString()
             val json = JsonUtil.fromJson(response, Map::class.java)
             val version = json["version"] as? String
-                if (version == null) { deferred.reject(Exception("Missing snode version.")); return@queue }
+            require(version != null) { "Missing snode version." }
-                if (version >= "2.0.7") {
+            require(version >= "2.0.7") { "Unsupported snode version: $version." }
-                    deferred.resolve(Unit)
-                } else {
-                    val message = "Unsupported snode version: $version."
-                    Log.d("Loki", message)
-                    deferred.reject(Exception(message))
         }
-            } catch (exception: Exception) {
-                deferred.reject(exception)
-            }
-        }
-        return deferred.promise
     }
 
     /**
@@ -359,7 +352,7 @@ object OnionRequestAPI {
                 return@success deferred.reject(exception)
             }
             val destinationSymmetricKey = result.destinationSymmetricKey
-            ThreadUtils.queue {
+            GlobalScope.launch {
                 try {
                     val response = HTTP.execute(HTTP.Verb.POST, url, body)
                     handleResponse(response, destinationSymmetricKey, destination, version, deferred)

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

@@ -1,8 +1,10 @@
 package org.session.libsession.snode
 
+import kotlinx.coroutines.GlobalScope
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
 import org.session.libsession.snode.OnionRequestAPI.Destination
+import org.session.libsession.snode.utilities.asyncPromise
 import org.session.libsession.utilities.AESGCM
 import org.session.libsession.utilities.AESGCM.EncryptionResult
 import org.session.libsignal.utilities.toHexString
@@ -37,9 +39,7 @@ object OnionRequestEncryption {
         destination: Destination,
         version: Version
     ): Promise<EncryptionResult, Exception> {
-        val deferred = deferred<EncryptionResult, Exception>()
+        return GlobalScope.asyncPromise {
-        ThreadUtils.queue {
-            try {
             val plaintext = if (version == Version.V4) {
                 payload
             } else {
@@ -53,26 +53,20 @@ object OnionRequestEncryption {
                 is Destination.Snode -> destination.snode.publicKeySet!!.x25519Key
                 is Destination.Server -> destination.x25519PublicKey
             }
-                val result = AESGCM.encrypt(plaintext, x25519PublicKey)
+            AESGCM.encrypt(plaintext, x25519PublicKey)
-                deferred.resolve(result)
-            } catch (exception: Exception) {
-                deferred.reject(exception)
         }
     }
-        return deferred.promise
-    }
 
     /**
      * Encrypts the previous encryption result (i.e. that of the hop after this one) for this hop. Use this to build the layers of an onion request.
      */
     internal fun encryptHop(lhs: Destination, rhs: Destination, previousEncryptionResult: EncryptionResult): Promise<EncryptionResult, Exception> {
-        val deferred = deferred<EncryptionResult, Exception>()
+        return GlobalScope.asyncPromise {
-        ThreadUtils.queue {
-            try {
             val payload: MutableMap<String, Any> = when (rhs) {
                 is Destination.Snode -> {
                     mutableMapOf("destination" to rhs.snode.publicKeySet!!.ed25519Key)
                 }
+
                 is Destination.Server -> {
                     mutableMapOf(
                         "host" to rhs.host,
@@ -88,17 +82,13 @@ object OnionRequestEncryption {
                 is Destination.Snode -> {
                     lhs.snode.publicKeySet!!.x25519Key
                 }
+
                 is Destination.Server -> {
                     lhs.x25519PublicKey
                 }
             }
             val plaintext = encode(previousEncryptionResult.ciphertext, payload)
-                val result = AESGCM.encrypt(plaintext, x25519PublicKey)
+            AESGCM.encrypt(plaintext, x25519PublicKey)
-                deferred.resolve(result)
-            } catch (exception: Exception) {
-                deferred.reject(exception)
         }
     }
-        return deferred.promise
-    }
 }

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

@@ -9,6 +9,7 @@ import com.goterl.lazysodium.interfaces.GenericHash
 import com.goterl.lazysodium.interfaces.PwHash
 import com.goterl.lazysodium.interfaces.SecretBox
 import com.goterl.lazysodium.utils.Key
+import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
@@ -27,6 +28,7 @@ import nl.komponents.kovenant.unwrap
 import org.session.libsession.messaging.utilities.MessageWrapper
 import org.session.libsession.messaging.utilities.SodiumUtilities.sodium
 import org.session.libsession.snode.model.BatchResponse
+import org.session.libsession.snode.utilities.asyncPromise
 import org.session.libsession.snode.utilities.await
 import org.session.libsession.snode.utilities.retrySuspendAsPromise
 import org.session.libsession.utilities.mapValuesNotNull
@@ -137,7 +139,7 @@ object SnodeAPI {
             JsonUtil.fromJson(it.body ?: throw Error.Generic, Map::class.java)
         }
 
-        else -> task {
+        else -> GlobalScope.asyncPromise {
             HTTP.execute(
                 HTTP.Verb.POST,
                 url = "${snode.address}:${snode.port}/storage_rpc/v1",
@@ -169,8 +171,7 @@ object SnodeAPI {
             JsonUtil.fromJson(resp.body ?: throw Error.Generic, responseClass)
         }
 
-        else -> withContext(Dispatchers.IO) {
+        else -> HTTP.execute(
-            HTTP.execute(
             HTTP.Verb.POST,
             url = "${snode.address}:${snode.port}/storage_rpc/v1",
             parameters = buildMap {
@@ -181,7 +182,6 @@ object SnodeAPI {
             JsonUtil.fromJson(it, responseClass)
         }
     }
-    }
 
     private val GET_RANDOM_SNODE_PARAMS = buildMap<String, Any> {
         this["method"] = "get_n_service_nodes"
@@ -192,7 +192,7 @@ object SnodeAPI {
     }
 
     internal fun getRandomSnode(): Promise<Snode, Exception> =
-        snodePool.takeIf { it.size >= minimumSnodePoolCount }?.secureRandom()?.let { Promise.of(it) } ?: task {
+        snodePool.takeIf { it.size >= minimumSnodePoolCount }?.secureRandom()?.let { Promise.of(it) } ?: GlobalScope.asyncPromise {
             val target = seedNodePool.random()
             Log.d("Loki", "Populating snode pool using: $target.")
             val url = "$target/json_rpc"
@@ -241,7 +241,7 @@ object SnodeAPI {
     }
 
     // Public API
-    fun getAccountID(onsName: String): Promise<String, Exception> = task {
+    fun getAccountID(onsName: String): Promise<String, Exception> = GlobalScope.asyncPromise {
         val validationCount = 3
         val accountIDByteCount = 33
         // Hash the ONS name using BLAKE2b
@@ -630,12 +630,17 @@ object SnodeAPI {
                             getBatchResponse(
                                 snode = snode,
                                 publicKey = batch.first().publicKey,
-                                requests = batch.map { it.request }, sequence = false
+                                requests = batch.mapNotNull { info ->
+                                    info.request.takeIf { !info.callback.isClosedForSend }
+                                },
+                                sequence = false
                             )
                         } catch (e: Exception) {
                             for (req in batch) {
+                                runCatching {
                                     req.callback.send(Result.failure(e))
                                 }
+                            }
                             return@batch
                         }
 
@@ -650,8 +655,10 @@ object SnodeAPI {
                                 JsonUtil.fromJson(resp.body, req.responseType)
                             }
 
+                            runCatching{
                                 req.callback.send(result)
                             }
+                        }
 
                         // Close all channels in the requests just in case we don't have paired up
                         // responses.
@@ -673,7 +680,14 @@ object SnodeAPI {
         val callback = Channel<Result<T>>()
         @Suppress("UNCHECKED_CAST")
         batchedRequestsSender.send(RequestInfo(snode, publicKey, request, responseType, callback as SendChannel<Any>))
+        try {
             return callback.receive().getOrThrow()
+        } catch (e: CancellationException) {
+            // Close the channel if the coroutine is cancelled, so the batch processing won't
+            // handle this one (best effort only)
+            callback.close()
+            throw e
+        }
     }
 
     suspend fun sendBatchRequest(

libsession/src/main/java/org/session/libsession/snode/utilities/PromiseUtil.kt

@@ -2,10 +2,14 @@ package org.session.libsession.snode.utilities
 
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
+import org.session.libsignal.utilities.Log
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.EmptyCoroutineContext
 import kotlin.coroutines.resume
 import kotlin.coroutines.resumeWithException
 import kotlin.coroutines.suspendCoroutine
@@ -17,9 +21,20 @@ suspend fun <T, E: Throwable> Promise<T, E>.await(): T {
     }
 }
 
-fun <T> CoroutineScope.asyncPromise(block: suspend () -> T): Promise<T, Exception> {
+fun <V, E: Throwable> Promise<V, E>.successBackground(callback: (value: V) -> Unit): Promise<V, E> {
+    GlobalScope.launch {
+        try {
+            callback(this@successBackground.await())
+        } catch (e: Exception) {
+            Log.d("Loki", "Failed to execute task in background: ${e.message}.")
+        }
+    }
+    return this
+}
+
+fun <T> CoroutineScope.asyncPromise(context: CoroutineContext = EmptyCoroutineContext, block: suspend () -> T): Promise<T, Exception> {
     val defer = deferred<T, Exception>()
-    launch {
+    launch(context) {
         try {
             defer.resolve(block())
         } catch (e: Exception) {

libsession/src/main/java/org/session/libsession/utilities/DownloadUtilities.kt

@@ -1,8 +1,11 @@
 package org.session.libsession.utilities
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import okhttp3.HttpUrl
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import org.session.libsession.messaging.file_server.FileServerApi
+import org.session.libsession.snode.utilities.await
 import org.session.libsignal.utilities.HTTP
 import org.session.libsignal.utilities.Log
 import java.io.File
@@ -14,8 +17,7 @@ object DownloadUtilities {
     /**
      * Blocks the calling thread.
      */
-    @JvmStatic
+    suspend fun downloadFile(destination: File, url: String) {
-    fun downloadFile(destination: File, url: String) {
         val outputStream = FileOutputStream(destination) // Throws
         var remainingAttempts = 2
         var exception: Exception? = null
@@ -35,13 +37,13 @@ object DownloadUtilities {
     /**
      * Blocks the calling thread.
      */
-    @JvmStatic
+    suspend fun downloadFile(outputStream: OutputStream, urlAsString: String) {
-    fun downloadFile(outputStream: OutputStream, urlAsString: String) {
         val url = urlAsString.toHttpUrlOrNull()!!
         val fileID = url.pathSegments.last()
         try {
-            FileServerApi.download(fileID).get().let {
+            val data = FileServerApi.download(fileID).await()
-                outputStream.write(it)
+            withContext(Dispatchers.IO) {
+                outputStream.write(data)
             }
         } catch (e: Exception) {
             when (e) {

libsignal/src/main/java/org/session/libsignal/utilities/HTTP.kt

@@ -1,10 +1,14 @@
 package org.session.libsignal.utilities
 
 import android.util.Log
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import okhttp3.Call
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.RequestBody
+import okhttp3.Response
 import org.session.libsignal.utilities.Util.SECURE_RANDOM
 import java.security.cert.X509Certificate
 import java.util.concurrent.TimeUnit
@@ -81,14 +85,14 @@ object HTTP {
     /**
      * Sync. Don't call from the main thread.
      */
-    fun execute(verb: Verb, url: String, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
+    suspend fun execute(verb: Verb, url: String, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
         return execute(verb = verb, url = url, body = null, timeout = timeout, useSeedNodeConnection = useSeedNodeConnection)
     }
 
     /**
      * Sync. Don't call from the main thread.
      */
-    fun execute(verb: Verb, url: String, parameters: Map<String, Any>?, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
+    suspend fun execute(verb: Verb, url: String, parameters: Map<String, Any>?, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
         return if (parameters != null) {
             val body = JsonUtil.toJson(parameters).toByteArray()
             execute(verb = verb, url = url, body = body, timeout = timeout, useSeedNodeConnection = useSeedNodeConnection)
@@ -100,7 +104,7 @@ object HTTP {
     /**
      * Sync. Don't call from the main thread.
      */
-    fun execute(verb: Verb, url: String, body: ByteArray?, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
+    suspend fun execute(verb: Verb, url: String, body: ByteArray?, timeout: Long = HTTP.timeout, useSeedNodeConnection: Boolean = false): ByteArray {
         val request = Request.Builder().url(url)
             .removeHeader("User-Agent").addHeader("User-Agent", "WhatsApp") // Set a fake value
             .removeHeader("Accept-Language").addHeader("Accept-Language", "en-us") // Set a fake value
@@ -125,7 +129,7 @@ object HTTP {
                 }
                 useSeedNodeConnection -> seedNodeConnection
                 else -> defaultConnection
-            }.newCall(request.build()).execute().use { response ->
+            }.newCall(request.build()).await().use { response ->
                 when (val statusCode = response.code) {
                     200 -> response.body!!.bytes()
                     else -> {
@@ -143,4 +147,13 @@ object HTTP {
             throw HTTPRequestFailedException(0, null, "HTTP request failed due to: ${exception.message}")
         }
     }
+
+    @Suppress("OPT_IN_USAGE")
+    private val httpCallDispatcher = Dispatchers.IO.limitedParallelism(3)
+
+    private suspend fun Call.await(): Response {
+        return withContext(httpCallDispatcher) {
+            execute()
+        }
+    }
 }

libsignal/src/main/java/org/session/libsignal/utilities/PromiseUtilities.kt

@@ -4,19 +4,9 @@ package org.session.libsignal.utilities
 import nl.komponents.kovenant.Promise
 import nl.komponents.kovenant.deferred
 import nl.komponents.kovenant.functional.map
-import nl.komponents.kovenant.task
-import java.util.concurrent.TimeoutException
 
-fun emptyPromise() = EMPTY_PROMISE
+fun emptyPromise() = Promise.of(Unit)
-private val EMPTY_PROMISE: Promise<*, java.lang.Exception> = task {}
 
-fun <V, E : Throwable> Promise<V, E>.get(defaultValue: V): V {
-    return try {
-        get()
-    } catch (e: Exception) {
-        defaultValue
-    }
-}
 
 fun <V, E : Throwable> Promise<V, E>.recover(callback: (exception: E) -> V): Promise<V, E> {
     val deferred = deferred<V, E>()
@@ -33,33 +23,6 @@ fun <V, E : Throwable> Promise<V, E>.recover(callback: (exception: E) -> V): Pro
     return deferred.promise
 }
 
-fun <V, E> Promise<V, E>.successBackground(callback: (value: V) -> Unit): Promise<V, E> {
-    ThreadUtils.queue {
-        try {
-            callback(get())
-        } catch (e: Exception) {
-            Log.d("Loki", "Failed to execute task in background: ${e.message}.")
-        }
-    }
-    return this
-}
-
-fun <V> Promise<V, Exception>.timeout(millis: Long): Promise<V, Exception> {
-    if (this.isDone()) { return this; }
-    val deferred = deferred<V, Exception>()
-    ThreadUtils.queue {
-        Thread.sleep(millis)
-        if (!deferred.promise.isDone()) {
-            deferred.reject(TimeoutException("Promise timed out."))
-        }
-    }
-    this.success {
-        if (!deferred.promise.isDone()) { deferred.resolve(it) }
-    }.fail {
-        if (!deferred.promise.isDone()) { deferred.reject(it) }
-    }
-    return deferred.promise
-}
 
 infix fun <V, E: Exception> Promise<V, E>.sideEffect(
     callback: (value: V) -> Unit

libsignal/src/main/java/org/session/libsignal/utilities/ThreadUtils.kt

@@ -14,16 +14,10 @@ object ThreadUtils {
 
     const val PRIORITY_IMPORTANT_BACKGROUND_THREAD = Process.THREAD_PRIORITY_DEFAULT + Process.THREAD_PRIORITY_LESS_FAVORABLE
 
-    // Note: To see how many threads are running in our app at any given time we can use:
+    @Deprecated("Use a proper coroutine context/dispatcher instead, so it's clearer what priority you want the work to be done")
-    // val threadCount = getAllStackTraces().size
-
     @JvmStatic
-    fun queue(target: Runnable) {
-        queue(target::run)
-    }
-
     fun queue(target: () -> Unit) {
-        Dispatchers.IO.dispatch(EmptyCoroutineContext) {
+        Dispatchers.Default.dispatch(EmptyCoroutineContext) {
             try {
                 target()
             } catch (e: Exception) {