network-simulation/l4_protocols.h at master · cancub/network-simulation · GitHub

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#ifndef L4_PROTOCOLS_H
#define L4_PROTOCOLS_H

#include <vector>
#include <iostream>
#include <fstream>
#include <cstdint>
#include <list>
#include "addressing.h"

using namespace std;


#define TCP_SYN 	0x0002
#define TCP_ACK 	0x0010
#define TCP_FIN 	0x0001
#define TCP_SYNACK 	(TCP_ACK | TCP_SYN)
#define TCP_FINACK 	(TCP_ACK | TCP_FIN)

#define TCP_INITIAL_SN 0

#define TCP_HEADER_SIZE 18
#define UDP_HEADER_SIZE 8


#define SEGMENT_EOF 0xFF

//  layer 4 types

// 	UDP

struct UDP {
	uint16_t source_port;
	uint16_t destination_port;
	uint16_t length;
	uint16_t checksum;
	vector<uint8_t> payload;
};


UDP generate_UDP(vector<uint8_t> udp_u8);
vector<UDP> * file_to_UDP_segments(const char * , uint16_t , uint16_t , int );


// TCP

struct TCP {
	uint16_t source_port;
	uint16_t destination_port;
	uint32_t sequence_number;
	uint32_t ACK_number;
	uint16_t details; // includes header length, SYN, FIN, ACK
	uint16_t receive_window;
	uint16_t checksum;
	vector<uint8_t> payload;
};

TCP generate_TCP(vector<uint8_t> tcp_u8);
vector<TCP> * file_to_TCP_segments(const char *, uint16_t , uint16_t , int );

// MPDU* TCP_to_MPDU();

#endif