Debug

SessionMessagingKit/Sending & Receiving/Pollers/ClosedGroupPoller.swift

@@ -58,12 +58,16 @@ public final class ClosedGroupPoller : NSObject {
     // MARK: Private API
     private func setUpPolling(for groupPublicKey: String) {
         poll(groupPublicKey).done2 { [weak self] _ in
+            DispatchQueue.main.async { // Timers don't do well on background queues
                 self?.pollRecursively(groupPublicKey)
+            }
         }.catch2 { [weak self] error in
-            // The error is logged in poll(_:isBackgroundPoll:)
+            // The error is logged in poll(_:)
+            DispatchQueue.main.async { // Timers don't do well on background queues
                 self?.pollRecursively(groupPublicKey)
             }
         }
+    }
 
     private func pollRecursively(_ groupPublicKey: String) {
         let groupID = LKGroupUtilities.getEncodedClosedGroupIDAsData(groupPublicKey)
@@ -82,13 +86,17 @@ public final class ClosedGroupPoller : NSObject {
         timers[groupPublicKey] = Timer.scheduledTimer(withTimeInterval: nextPollInterval, repeats: false) { [weak self] timer in
             timer.invalidate()
             self?.poll(groupPublicKey).done2 { _ in
+                DispatchQueue.main.async { // Timers don't do well on background queues
                     self?.pollRecursively(groupPublicKey)
+                }
             }.catch2 { error in
                 // The error is logged in poll(_:)
+                DispatchQueue.main.async { // Timers don't do well on background queues
                     self?.pollRecursively(groupPublicKey)
                 }
             }
         }
+    }
 
     private func poll(_ groupPublicKey: String) -> Promise<Void> {
         guard isPolling(for: groupPublicKey) else { return Promise.value(()) }