SRRdtSender.h

#ifndef STOP_WAIT_RDT_SENDER_H
#define STOP_WAIT_RDT_SENDER_H
#include <vector>
#include <fstream>
#include "RdtSender.h"
//#include "Config.h"

//extern fstream file;
class SRRdtSender :public RdtSender
{
private:
	
	const int WindowsSize;
	const int SeqSize;				//分组序号
	int expectSequenceNumberSend;	// 下一个发送序号 
	int base;						//等待ACK序号
	bool waitingState;				// 是否处于等待Ack的状态

	Packet packetWaitingAck;		//已发送并等待Ack的数据包

	std::vector<Packet> PacketWindows;
	std::vector<int> AckWindows;
	std::fstream file;
public:

	bool getWaitingState();
	bool send(Message &message);						//发送应用层下来的Message，由NetworkServiceSimulator调用,如果发送方成功地将Message发送到网络层，返回true;如果因为发送方处于等待正确确认状态而拒绝发送Message，则返回false
	void receive(Packet &ackPkt);						//接受确认Ack，将被NetworkServiceSimulator调用	
	void timeoutHandler(int seqNum);					//Timeout handler，将被NetworkServiceSimulator调用

public:
	SRRdtSender();
	virtual ~SRRdtSender();
};

#endif