CODEWITHSUNDEEP
asp.netsignalr
Logda
Logda

Reputation: 17

ASP.NET SignalR - Cannot send list of messages stored in database to user

My SignalR ChatHub requires Authorization in order to send a message to another user. If a users sends a message, but if the recipient is not connected to the Hub, then it will be saved in the database. Now that part works fine, I am able to save messages to the recipients Inbox.

IdentityModel :

public class ApplicationUser : IdentityUser
{ 
    public virtual ICollection<MyMessage> Inbox { get; set; }
    //......
}

This is how messages are saved if not connected to Hub:

var recipient = UserManager.FindById(id);
if (recipient != null)
{
    if (recipient.Message_Inbox == null)
    {
        recipient.Message_Inbox = new List<MyMessage>();
    }
    recipient.Inbox.Add(new MyMessage() { Id = Guid.NewGuid().ToString(), SentBy = userId, Message = message});
    UserManager.Update(recipient); 
}

And then OnConnected, the database is queried and the user is sent a list of messages. But that doesn't work. If I create a sample list of messages and send it, my client receives it but not if I send it from the server.

List<MyMessage> inbox = user.Inbox.ToList();
Clients.Client(Context.ConnectionId).sendInbox(inbox); //doesn't work

//but if I do this
List<MyMessage> list = new List<MyMessage>()
                {
                    new MyMessage() { SentBy = "asdsadd", Message = "First", Id = "sds" },
                    new MyMessage() { SentBy = "asdsadd1", Message = "Second", Id = "sds2" },
                };
 Clients.Client(Context.ConnectionId).sendInbox(list); // IT WORKS

This is how I get my UserManager :

private ApplicationUserManager _userManager;//updated
public ApplicationUserManager UserManager
    {
        get
        {
            return _userManager ?? Context.Request.GetHttpContext().GetOwinContext().GetUserManager<ApplicationUserManager>();
        }
        private set
        {
            _userManager = value;
        }
    }

Upvotes: 0

Views: 575

Answers (2)

Logda
Logda

Reputation: 17

Solved the problem by using Json to serialize it.

 string jsonObject = JsonConvert.SerializeObject(inbox);

Not sure why my test list didn't need to be serialized, but oh well. It works.

Upvotes: 0

Wen W
Wen W

Reputation: 2647

you will need to change hub method of querying messages to an async action. Here's the source.

Upvotes: 0

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