public async Task ShowFriends(string id)
{
if (id == null)
{
id = Context.ConnectionId;
}
var friends = _friendManager.GetFriends(id);
await Clients.Client(id).showFriends(friends);
try
{
Clients.All.usersOnline();
}
catch (Exception e)
{
var v = e.Message;
}
}