How to reconnect to conversation using DirectLine App Service Extension?

问题

I am using the DirectLine 3.0.3-preview NuGet package to create a .NET client using DirectLine App Service Extension. I am able to establish a connection and start a new conversation via WebSockets using directLineClient.StreamingConversations.ConnectAsync(conversationId, receiveMessageCallback)

I am saving the conversationId generated from that session. However when I try to use that conversationId to create a new connection, I am not able to reconnect:

// Initialize a DirectLineClient using the secret.
var directLineClient = new DirectLineClient(
                           new Uri(_directLineEndpoint),
                           new DirectLineClientCredentials(_directLineSecret));

var conversation =  await directLineClient.Conversations
                             .ReconnectToConversationAsync(savedConversationId);

When I execute the code above, I get a null conversation object. This does not happen when I do the same approach before I moved to using App Service Extensions.

Is there a new way to reconnect to an existing conversation via WebSockets using DirectLine App Service Extension?

回答1:

So after researching further, it seems that DirectLine App Service Extension does not support message caching, as mentioned by answers and comments from this thread:

Direct Line App Extension - How and where are messages cached?

来源：https://stackoverflow.com/questions/63716073/how-to-reconnect-to-conversation-using-directline-app-service-extension