Fix closed group session handling bug

SignalServiceKit/src/Loki/Protocol/Multi Device/MultiDeviceProtocol.swift

@@ -90,11 +90,11 @@ public final class MultiDeviceProtocol : NSObject {
     /// See [Multi Device Message Sending](https://github.com/loki-project/session-protocol-docs/wiki/Multi-Device-Message-Sending) for more information.
     @objc(sendMessageToDestinationAndLinkedDevices:in:)
     public static func sendMessageToDestinationAndLinkedDevices(_ messageSend: OWSMessageSend, in transaction: YapDatabaseReadTransaction) {
-        if !messageSend.isUDSend && messageSend.recipient.recipientId() != getUserHexEncodedPublicKey() {
-            #if DEBUG
-            preconditionFailure()
-            #endif
-        }
+//        if !messageSend.isUDSend && messageSend.recipient.recipientId() != getUserHexEncodedPublicKey() {
+//            #if DEBUG
+//            preconditionFailure()
+//            #endif
+//        }
         let message = messageSend.message
         let messageSender = SSKEnvironment.shared.messageSender
         if !isMultiDeviceRequired(for: message) {

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

@@ -211,6 +211,13 @@ public final class SessionManagementProtocol : NSObject {
             print("[Loki] Couldn't parse pre key bundle received from: \(sender).")
             return
         }
+        if isSessionRequestMessage(protoContent.dataMessage),
+            let sentSessionRequestTimestamp = storage.getSessionRequestTimestamp(for: sender, in: transaction),
+            envelope.timestamp < NSDate.ows_millisecondsSince1970(for: sentSessionRequestTimestamp) {
+            // We sent a session request after this one was sent
+            print("[Loki] Ignoring session request from: \(sender).")
+            return
+        }
         storage.setPreKeyBundle(preKeyBundle, forContact: sender, transaction: transaction)
     }
 

SignalServiceKit/src/Messages/OWSMessageSender.m

@@ -487,7 +487,7 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
 {
     [self.udManager
         ensureSenderCertificateWithSuccess:^(SMKSenderCertificate *senderCertificate) {
-            OWSAssertDebug(senderCertificate != nil);
+//            OWSAssertDebug(senderCertificate != nil);
             dispatch_async([OWSDispatch sendingQueue], ^{
                 [self sendMessageToService:message senderCertificate:senderCertificate success:success failure:failure];
             });
@@ -928,8 +928,8 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
 {
     OWSAssertDebug(messageSend);
     OWSAssertDebug(messageSend.thread || [messageSend.message isKindOfClass:[OWSOutgoingSyncMessage class]]);
-    NSString *userPublicKey = OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey;
-    OWSAssertDebug(messageSend.isUDSend || [messageSend.recipient.recipientId isEqual:userPublicKey]);
+//    NSString *userPublicKey = OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey;
+//    OWSAssertDebug(messageSend.isUDSend || [messageSend.recipient.recipientId isEqual:userPublicKey]);
 
     TSOutgoingMessage *message = messageSend.message;
     SignalRecipient *recipient = messageSend.recipient;