fallback mechanism

src/Speckle.Sdk/Api/GraphQL/Resources/ActiveUserResource.cs

@@ -313,6 +313,37 @@ public sealed class ActiveUserResource
   /// <remarks>note this returns a <see cref="LimitedWorkspace"/>, because it may be a workspace the user is not a member of</remarks>
   /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
   /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
+  private async Task<LimitedWorkspace?> GetActiveWorkspace_Legacy(CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+      query ActiveUser {
+        data:activeUser {
+          data:activeWorkspace {
+            id
+            name
+            role
+            slug
+            description
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest { Query = QUERY };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<NullableResponse<NullableResponse<LimitedWorkspace?>?>>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    if (response.data is null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+
+    return response.data.data;
+  }
+
   public async Task<LimitedWorkspace?> GetActiveWorkspace(CancellationToken cancellationToken = default)
   {
     //language=graphql
@@ -333,9 +364,18 @@ public sealed class ActiveUserResource
 
     var request = new GraphQLRequest { Query = QUERY };
 
-    var response = await _client
-      .ExecuteGraphQLRequest<NullableResponse<NullableResponse<LimitedWorkspace?>?>>(request, cancellationToken)
-      .ConfigureAwait(false);
+    NullableResponse<NullableResponse<LimitedWorkspace?>?> response;
+    try
+    {
+      response = await _client
+        .ExecuteGraphQLRequest<NullableResponse<NullableResponse<LimitedWorkspace?>?>>(request, cancellationToken)
+        .ConfigureAwait(false);
+    }
+    catch (SpeckleGraphQLInvalidQueryException)
+    {
+      //v2.x.x servers do not have a logoUrl property
+      return await GetActiveWorkspace_Legacy(cancellationToken).ConfigureAwait(false);
+    }
 
     if (response.data is null)
     {

src/Speckle.Sdk/Api/GraphQL/Resources/SubscriptionResource.cs

@@ -76,6 +76,7 @@ public sealed class SubscriptionResource : IDisposable
   /// <summary>Subscribe to updates to resource comments/threads. Optionally specify resource ID string to only receive updates regarding comments for those resources</summary>
   /// <remarks><inheritdoc cref="CreateUserProjectsUpdatedSubscription"/></remarks>
   /// <inheritdoc cref="ISpeckleGraphQLClient.SubscribeTo{T}"/>
+  [Obsolete("Comments are now issues, and we've not update SDKs with the new subs")]
   public Subscription<ProjectCommentsUpdatedMessage> CreateProjectCommentsUpdatedSubscription(
     ViewerUpdateTrackingTarget target
   )