Issue on signalR dotnet core

Question

Issue

Scenario:

• SignalR version 1.0.0 RC1 Final
• DotNet Core 2.0
• Tipical: User - Posts - Comments models.

Issue:

When I send a model through websocket fails silently (no message is send to clients). It works fine if I set to null navigation property:

    _context.Posts.Add(model);
    _context.SaveChanges();

    model.User.Posts = null;  // <- removing this line fails silently

    _hub.Clients.All.SendAsync("AddAsync", model);

How can I diagnose what is happens? Someone knows what is the reason?

---

Some unnecesary code details

User.cs

public Guid Id { get; set; }
// ...
public virtual List<Post> Posts { get; set; } = new List<Post>();

Post.cs

public Guid Id { get; set; }
// ...
public virtual User User { get; set; }

PostsController.cs

private IHubContext<PostsHub> _hub;
private DatabaseContext _context;

public PostsController(IHubContext<PostsHub> hub)
{
    _hub = hub;
}

// ...

[HttpPost]
public async Task<ActionResult> PostAsync([FromBody] Post model)
{
    // ...

    _context.Posts.Add(model);
    _context.SaveChanges();

    model.User.Posts = null;

    _hub.Clients.All.SendAsync("AddAsync", model);

    // ...
}

Answer 1

With json convert Serialize the model to json and deserialize it again as Post object just before sending it. If there is an error it should popup there, because if there is a dependency loop json convert should throw exception