However at least the chat service must provide the facility to select whether or not to broadcast to all listeners or just to direct the message to one listener and also the ability yo encrypt the content of the message. See the example below. This can be done by using string tokenization of the message sent to the server. Once the server gets the string that includes name of sender, name of the receiver it can select to send to just that person. Otherwise it will broadcast it to all, the same goes for the encryption