public void Unregister()
{
//doesn't matter on user Id, in case of comparing users, callback is enought
var newUser = new Client(ClientCallback, "");
AllConnectedUsers.Remove(newUser);
}
public string Register(string name)
{
var newUser = new Client(ClientCallback, Guid.NewGuid().ToString("N"));
//try to remove if already exist (etc. in the case user try to connect from the same machine and his unregister was't made properly)
AllConnectedUsers.Remove(newUser);
AllConnectedUsers.Add(newUser);
return(newUser.Id);
}