Conversations are not shown between different platforms

[Cordt]

Context We implemented an iOS Client using the SDK to allow for simple messaging between clients. Discovery of conversation partners is enabled via Lens handles.

Problem Though it is possible to successfully create and receive conversations, as well as write and receive messages, these conversations are not visible across different platforms.

• Conversations created within our app are only visible in this app, but not for examples in Lenster
• Conversations created in Lenster are not visible in our app

We have tested this both on dev and production networks resulting in exactly the same behaviour.

As I understand the implementation of the SDK, it should default to v2 Conversations without additional setup. I also dumped the conversations on the console to verify this, which shows the following

XMTP.Conversation.v2(
  XMTP.ConversationV2(
    topic: "/xmtp/0/.../proto", 
    keyMaterial: 32 bytes, 
    context: XMTPProto.Xmtp_MessageContents_InvitationV1.Context:, 
    peerAddress: "...", 
    client: XMTP.Client, 
    header: XMTPProto.Xmtp_MessageContents_SealedInvitationHeaderV1:
    ...

Please let me know whether more context is needed to dig into this issue!

[nakajima]

Hmm, I seem to be able to see conversations/messages between the browser and the iOS example app:

https://user-images.githubusercontent.com/483/210890479-c9b59e30-2764-4f56-ac2e-5f34721962ee.mov

Are you noticing any errors in the console? Are you using different conversationIDs?

[Cordt]

Not making use of conversationIds at all and don't see any error messages. Will try with the example apps as well and see whether I get different behaviour. The main difference between lentil and the example app is that I don't use the integrated WalletConnect.

[Cordt]

@nakajima Just verified: The same conversations that are shown in lentil are shown in the Example app as well, but are not shown in Lenster. I therefore assume that Lenster might be doing something different. Will ask the team about it

[saulmc]

@Cordt Wait. That might be working as intended. Lenster uses the Lens DMs converationId and explicitly disregards any messages that don't have it. If you use the Lens DMs conversationId when initiating conversations in Lentil, do they appear in Lenster?

https://xmtp.org/docs/client-sdk/javascript/tutorials/build-key-xmtp-chat-features-in-a-lens-app#build-the-lens-dm-conversation-id

[Cordt]

@saulmc Agreed, that appears to be the issue. I think that in that case there is a Bug in the library then, because I don't filter on .list() at all, so the Lens Conversations should definitely be returned on my end, which they don't

[Cordt]

Updating to the newest version of the repo fixes this issue.

Conversations that were created using an older version do not show up anymore, but this issue seems to be isolated to this SDK (iOS).