public override Task OnConnectedAsync()
{
string userId = Context.GetHttpContext().Request.Query["userId"].ToString();
//add the connection to the group that corresponds to the user id
Groups.AddToGroupAsync(Context.ConnectionId, userId);
SignalRConnectionToGroupsMap.TryAddGroup(Context.ConnectionId, userId);
return(base.OnConnectedAsync());
}
public Task Subscribe(String id)
{
List <String> groups;
var success = SignalRConnectionToGroupsMap.TryRemoveConnection(Context.ConnectionId, out groups);
if (groups != null)
{
foreach (var group in groups)
{
Groups.Remove(Context.ConnectionId, group);
}
}
SignalRConnectionToGroupsMap.TryAddGroup(Context.ConnectionId, id);
return(Groups.Add(Context.ConnectionId, id));
}