public void SendMJsonObject(MJsonMessageJoin jsonmsg)
{
SendMessageToServer(MjsonObjectToString(jsonmsg));
}
/// <summary>
/// callback for Hello message which is sent from server when client connects server.
/// clients must send none(no action) message in this function.
/// </summary>
void OnHello()
{
var startMessage = new MJsonMessageJoin(PlayerName, RoomName);
serverHolder.SendMJsonObject(startMessage);
}