udp_client:

  class udp_client: public csclient
  {
  public:
      udp_client();
      udp_client(const char* hostname, int portnr);
      virtual ~udp_client();
  
      virtual int connect(const char* hostname, int portnr);
  
  protected:
      inet_address* _inetaddr;
      udp_clientimp* _udpimp;
  };