标签：style blog http color 使用 os strong 数据
定义?
Class TCPConnection{public:TCPConnection();void activeOPen();void passiveOpen();void close();void send();protected:friend class TCPState;void changeState(TCPState* state);private:TCPState* m_state;};TCPConnection::TCPConnection(){m_state = TCPClosed::instance();}void TCPConnection::activeOpen(){m_state->activeOpen();}void TCPConnection::passiveOpen(){m_state->passiveOpen();}void TCPConnection::close(){m_state->close();}void TCPConnection::send(){m_state->send();}void changeState(TCPState* state){m_state = state;}
class TCPState{public:virutal void activeOPen(TCPConnection*);virtual void passiveOpen(TCPConnection*)virtual void close(TCPConnection*);virtual void send(TCPConnection*);protected:void changeState(TCPConnection*, TCPState*);};
class TCPEStablished : public TCPState{public:static TCPState* instance();virtual void close(TCPConnection* t){changeState(t, TCPConnection::instance());}};
class TCPListen : public TCPState{public:static TCPListen* instance();vritual void send(TCPConnection* t){// send SYN, receive SYN, ACK, ect.changeState(t, TCPEStabiished::instance());}};
class TCPClosed : public TCPState{public:virtual void activeOpen(TCPConnection* t){// send SYN, receive SYN, ACK, ect.changeState(t, TCPEStablished::instance());}virtual void passiveOpen(TCPConnection* t){// send FIN, receive ACK of FIN.changeState(t, TCPListen::instance());}};
标签：style blog http color 使用 os strong 数据
原文地址：http://blog.csdn.net/harrising/article/details/38092017
