29    virtual int Open(
const QString &szServer,
 
   31                     const QString &user = QString(),
 
   32                     const QString &password = QString()) 
override;
 
   33    virtual int Close() 
override;
 
   34    virtual bool IsConnected() 
override;
 
   35    virtual int SendDescription(
const QString &toUser,
 
   36                                const QString &channelId,
 
   37                                const rtc::Description &description,
 
   38                                const QString &fromUser) 
override;
 
   39    virtual int SendCandidate(
const QString &toUser,
 
   40                             const QString &channelId,
 
   41                             const rtc::Candidate &candidate,
 
   42                             const QString &fromUser) 
override;
 
   47    void slotError(QXmppClient::Error e);