sender.h

这是一本学习 window编程的很好的参考教材

#include "stdafx.h"
#define FRAME_LEN       1472   //=32*46

#define DATA_LEN        FRAME_LEN 
#define MEMBLOCK_LEN    1024   //must <1500,because it is used in other place
#define DEFAULT_SNAPLEN FRAME_LEN

#include <stdio.h>

#include <stdarg.h>
#include <time.h>
#include <Winsock2.h>
#define HAVE_REMOTE
#include <pcap.h>
#pragma comment(lib,"Packet.lib")
#pragma comment(lib,"wpcap.lib")
#pragma comment(lib,"Ws2_32.lib")
#include <list>



#define  FILE_HEADER_FLAG 0x0001
#define  FILE_BODY_FLAG 0x0002
#define  FILE_TAILER_FLAG 0x0003
#define  MESSAGE_FLAG 0x0004
#define  FILE_FOLDER_FLAG 0x0005
#define  FILE_INIT_FLAG   0x0006
#define  FILE_END_FLAG   0x0007


#define  ANSWER_FLAG   0x0008
struct MemNode
{
	char data[DATA_LEN];
	int  len;
	int  bUsed;
};

struct FILE_HEADER{

	DWORD dwFileHash;
	
	DWORD dwFileLen;
	char szFileName[MAX_PATH];
};
struct FILE_TAILER{
	DWORD dwFileHash;
	
	DWORD dwFileLen;
	DWORD dwEndFlag;

};
struct FILE_BODY{
	DWORD dwFileHash;
	DWORD dwFilePos;
	DWORD dwBlockSize;
	BYTE byData[DATA_LEN-24];
};
struct FILE_INFO{
	DWORD dwIP;
	TCHAR szComputeName[256];
	TCHAR szDstFilePath[MAX_PATH+1];
};
struct FILE_FOLDER{
	DWORD dwIP;
	DWORD dwFilePathLen;
	TCHAR szFilePath[MAX_PATH+1];

};
typedef struct tagPacketInfo
{
	DWORD dwFlag;   //数据块的标志
	
	DWORD dwLen;    //Union 数据的长度

	DWORD ID;       //会话表示

	union
	{
		FILE_HEADER fh;
		FILE_BODY   fb;
		FILE_TAILER ft;
		FILE_FOLDER ff;
		FILE_INFO   fi;
		char szMessage[DATA_LEN-12];
	};
}PacketInfo,*pPacketInfo;
typedef std::list<MemNode > MemNodeList;
static MemNodeList MemBlock;
//static struct MemNode MemBlock[MEMBLOCK_LEN];
//static int  MemRead_pos, MemWrite_pos;
static int NEXT_SYN;
static int MY_WIN,ACK;
static char Recv_Status;//'t' or 'f'
static DWORD dwInFileSize;
static TCHAR szFileName[MAX_PATH];
static DWORD dwCheckSum;
static HANDLE inputfd=NULL;

static HANDLE input_id=NULL;
static HANDLE recv_ack_id=NULL;
static HANDLE send_id=NULL;

static int PeerWin=1;
static char Send_Status=0;

static HANDLE outputfd=NULL;

static HANDLE output_id=NULL;
static HANDLE recv_data_id=NULL;
static HANDLE send_data_id=NULL;
DWORD checksum(BYTE *buffer, int size) ;
int write_memblock(char *buff,int len);
BOOL beep(DWORD dwFreq);
//static CRITICAL_SECTION  win_mutex;

static HANDLE g_hSemaphore=NULL;
//int InitRecv(void);
int InitSend(/*char* input_fifo,BOOL bFile*/);
void EndSend();
int Except(LPEXCEPTION_POINTERS lpEP);
void MyTrace(char* fmt, ...);