VC++中使用Socket网络文件传输

1.SOCKET_STREAM_FILE_INFO格式:

typedef struct _SOCKET_STREAM_FILE_INFO {

TCHAR szFileTitle[128]; //文件的标题名
DWORD dwFileAttributes; //文件的属性
FILETIME ftCreationTime; //文件的创建时间
FILETIME ftLastAccessTime; //文件的最后访问时间
FILETIME ftLastWriteTime; //文件的最后修改时间
DWORD nFileSizeHigh; //文件大小的高位双字
DWORD nFileSizeLow; //文件大小的低位双字
DWORD dwReserved0; //保留，为0
DWORD dwReserved1; //保留，为0

} SOCKET_STREAM_FILE_INFO, * PSOCKET_STREAM_FILE_INFO;

2.文件发送:
CFile myFile;
if(!myFile.Open(fileneme, CFile::modeRead | CFile::typeBinary))
{
AfxMessageBox("文件不存在!",MB_OK|MB_ICONERROR);
return;
}
CSocket sockSrvr;
sockSrvr.Create(800);

sockSrvr.Listen();
CSocket sockRecv;
sockSrvr.Accept(sockRecv);

SOCKET_STREAM_FILE_INFO StreamFileInfo;
WIN32_FIND_DATA FindFileData;

FindClose(FindFirstFile(filename，FindFileData));
memset(&StreamFileInfo,0,sizeof(SOCKET_STREAM_FILE_INFO));
strcpy(StreamFileInfo.szFileTitle,myFile.GetFileTitle());

StreamFileInfo.dwFileAttributes = FindFileData.dwFileAttributes;
StreamFileInfo.ftCreationTime = FindFileData.ftCreationTime;
StreamFileInfo.ftLastAccessTime = FindFileData.ftLastAccessTime;
StreamFileInfo.ftLastWriteTime = FindFileData.ftLastWriteTime;
StreamFileInfo.nFileSizeHigh = FindFileData.nFileSizeHigh;
StreamFileInfo.nFileSizeLow = FindFileData.nFileSizeLow;

sockRecv.Send(&StreamFileInfo,sizeof(SOCKET_STREAM_FILE_INFO));

UINT dwRead=0;
while(dwRead
{
byte* data = new byte[1024];
UINT dw=myFile.Read(data, 1024);
sockRecv.Send(data, dw);
dwRead+=dw;
}
myFile.Close();
sockRecv.Close();
AfxMessageBox("发送完毕！");

3. 接受文件

CSocket sockClient;
sockClient.Create();
if(!sockClient.Connect((LPCTSTR)szIP, 800))
{
AfxMessageBox("连接到对方机器失败!");
return;
}
SOCKET_STREAM_FILE_INFO StreamFileInfo;
sockClient.Receive(&StreamFileInfo,sizeof(SOCKET_STREAM_FILE_INFO));
CFile destFile(StreamFileInfo.szFileTitle, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary);

UINT dwRead = 0;
while(dwRead
{
byte* data = new byte[1024];
memset(data,0,1024);

UINT dw=sockClient.Receive(data, 1024);
destFile.Write(data, dw);

dwRead+=dw;
}

SetFileTime((HANDLE)destFile.m_hFile,&StreamFileInfo.ftCreationTime,
&StreamFileInfo.ftLastAccessTime,&StreamFileInfo.ftLastWriteTime);
destFile.Close();
SetFileAttributes(StreamFileInfo.szFileTitle,StreamFileInfo.dwFileAttributes);
sockClient.Close();
AfxMessageBox("接收完毕！");

//注：
memset()
原型：extern void *memset(void *buffer, int c, int count);
用法：#include
功能：把buffer所指内存区域的前count个字节设置成字符c。
说明：返回指向buffer的指针。