I am doing my first tests with SignalR. I am toying with chat messages, but that's only a first step to replace all the polling from client to server which I have today on my site.
I have a lot of scenarios where I want to notify certain users either by their login or by their ID. The idea is that I am adding each user to two groups as soon as he connects. I do this in OnConnected and that event is called.
When I send a chat message, I have two modes: either public or personal. If it is personal the sender is notified and the recipient should be notified. The sender gets a message but the group never does. It seems to be impossible to found out how many members a group has.
Any ideas what's going wrong here?
public class GlobalHub:Hub
{
private Users user;
private void AuthenticateUser()
{
var ydc = new MyDataContext();
user = ydc.Users.First(u => u.Login == HttpContext.Current.User.Identity.Name);
}
public override Task OnConnected()
{
var ydc = new MyDataContext();
user = ydc.Users.First(u => u.Login == HttpContext.Current.User.Identity.Name);
Groups.Add(Context.ConnectionId, user.Login);
Groups.Add(Context.ConnectionId, user.ID.ToString());
return base.OnConnected();
}
public void SendChatMessage(string message, string recipient)
{
AuthenticateUser();
var cm = ChatController.AddChatMessage(user.Login, user.ID, recipient, tmessage);
if (recipient != "")
{
Clients.Caller.NewMessage(cm);
Clients.Group(recipient).NewMessage(cm);
}
else
{
Clients.All.NewMessage(cm);
}
}
}