Packet.h

/*
 * Packet.h
 *
 *  Created on: 03.09.2015
 *      Author: jdi
 */

#ifndef PACKET_H_
#define PACKET_H_

#define HEADER_LEN 32
#define PACKET_END 0xFFFF0000

#include "Types.h"

class Packet {
public:
	enum OpCode {
		DISCOVERY, GET, SET, READ
	};
	Packet(OpCode);
	virtual ~Packet() {
	}
	void encode(bytes&);
	bytes getBytes();
	void parse(bytes);
	void printHeader();
	std::string opCodeToString();
	short getLength() const;
	int getCheckSum() const;
	short getSequenceId() const;
	const byteArray<6>& getSwitchMac() const;
	const bytes& getBody() const;
	const bytes& getHead() const;
	const datasets& getPayload() const;
	void setBody(bytes);
	void setHostMac(byteArray<6>);
	void setSwitchMac(byteArray<6>);
	void setCheckSum(int);
	void setSequenceId(short);
	void setPayload(const datasets& payload);

private:
	bytes head = bytes(32);
	bytes body = bytes(0);
	datasets payload;

	byte version = 1;
	byte opCode;
	byteArray<6> switchMac = { 0, 0, 0, 0, 0, 0 };
	byteArray<6> hostMac = { 0, 0, 0, 0, 0, 0 };
	byteArray<6> broadcastMac = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
	short sequenceId;
	short tokenId = 0;
	short fragmentOffset = 0;
	int errorCode = 0;
	int checkSum = 0;
	short flag = 0;

	void buildHead();
	void buildBody();

	void push(bytes&, int&, short);
	void push(bytes&, int&, int);
	void push(bytes&, int&, byte);
	void push(bytes&, int&, bytes);
	void push(bytes&, int&, dataset);

	void pull(bytes&, int&, short&);
	void pull(bytes&, int&, int&);
	void pull(bytes&, int&, byte&);
	void pull(bytes&, int&, bytes&, unsigned);
	void pull(bytes&, int&, dataset&);
};

#endif /* PACKET_H_ */