connection

  class connection
  {
  public:
      connection();                   // for receiving side
      connection(const csaddress* addr);
      virtual ~connection();
  
      virtual csaddress* address() const;
      virtual int fd() const;
      virtual int connected();
  
  protected:
      virtual void init(const csaddress* addr);
  
      int _fd;
      int _connected;
      csaddress* _address;
  };