Debug

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -712,6 +712,12 @@ typedef enum : NSUInteger {
             [SSKEnvironment.shared.profileManager ensureProfileCachedForContactWithID:self.thread.contactIdentifier with:transaction];
         }];
     }
+
+    if ([self.thread isKindOfClass:TSContactThread.class]) {
+        [LKStorage writeSyncWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
+            [LKSessionManagementProtocol sendSessionRequestIfNeededToPublicKey:self.thread.contactIdentifier transaction:transaction];
+        } error:nil];
+    }
 }
 
 - (void)createContents

SignalServiceKit/src/Loki/Protocol/Session Management/SessionManagementProtocol.swift

@@ -64,6 +64,7 @@ public final class SessionManagementProtocol : NSObject {
     public static func shouldUseFallbackEncryption(for message: TSOutgoingMessage, recipientID: String, transaction: YapDatabaseReadWriteTransaction) -> Bool {
         if message is SessionRequestMessage { return true }
         else if let message = message as? DeviceLinkMessage, message.kind == .request { return true }
+        else if message is OWSOutgoingNullMessage { return false }
         return !storage.containsSession(recipientID, deviceId: Int32(OWSDevicePrimaryDeviceId), protocolContext: transaction)
     }
 

SignalServiceKit/src/Messages/OWSMessageSender.m

@@ -1543,6 +1543,12 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
 
         BOOL shouldUseFallbackEncryption = [LKSessionManagementProtocol shouldUseFallbackEncryptionForMessage:message recipientID:recipientID transaction:transaction];
 
+        if (shouldUseFallbackEncryption) {
+            [LKLogger print:@"[Loki] Using fallback encryption"];
+        } else {
+            [LKLogger print:@"[Loki] Using Signal Encryption"];
+        }
+
         serializedMessage = [secretCipher throwswrapped_encryptMessageWithRecipientPublicKey:recipientID
                                                                                     deviceID:@(OWSDevicePrimaryDeviceId).intValue
                                                                              paddedPlaintext:plainText.paddedMessageBody