ftp相关问题

	

// 二进制传输

memset(pDataBuffer, 0, TEMP_BUFFER_SIZE * sizeof(WCHAR));

pThis->pConnect->Command(L"TYPE I", CFtpConnection::CmdRespNone); 

InternetGetLastResponseInfo(&dwError, pDataBuffer, &dwBufferSize);



// 获取文件大小

wcscpy(szCMD, L"SIZE ");

wcscat(szCMD, pThis->m_szDownLoadFile);

memset(pDataBuffer, 0, TEMP_BUFFER_SIZE * sizeof(WCHAR));

pThis->pConnect->Command(szCMD, CFtpConnection::CmdRespNone); 

InternetGetLastResponseInfo(&dwError, pDataBuffer, &dwBufferSize);



// 获取传输的端口

memset(pDataBuffer, 0, TEMP_BUFFER_SIZE * sizeof(WCHAR));

pThis->pConnect->Command(L"PASV\r\n",CFtpConnection::CmdRespNone);

// ************注意：为什么这里得到pDataBuffer是空的，dwBufferSize为96 

InternetGetLastResponseInfo(&dwError, pDataBuffer, &dwBufferSize);



// 获取传输的端口

memset(pDataBuffer, 0, TEMP_BUFFER_SIZE * sizeof(WCHAR));

pThis->pConnect->Command(L"PASV",CFtpConnection::CmdRespNone); 

// ***********注意：这里pDataBuffer有返回端口号

InternetGetLastResponseInfo(&dwError, pDataBuffer, &dwBufferSize);