The following classes are available globally.
Objects of this class represents a connection with another computer.
It is intended to be subclassed for connections that are able to receive data. A Connection object has default implementations for the ReceiverProtocol and TransmitterProtocol. A subclass should override the methods it needs.
Every connection object is made ready for use with the
initis ineffective for that.
By default a connection stays open until the peer closes it. This is normally unacceptable for a server!