求助一个http上传文件的问题

david2020

我想给远程服务器上传文件，我用postman上传成功的。上传是也用fiddler抓包看了一下。附件中有详细的截图。

但是我想通过VC程序写，因为我是初学者，代码不知道怎么写，就照猫画虎的写，写的如下，本来想通过抓包工具fiddler抓包看看自己写的代码。但是fiddler里什么都抓取不到。这下不知道怎么搞了，请高手们指点迷津。小弟非常感谢！
        HANDLE hFile = CreateFile(L"D:\\0409105026-1-2.jpg", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
        if (hFile == INVALID_HANDLE_VALUE)
        {
                printf("open error\n");
                return;
        }
        DWORD filesize = GetFileSize(hFile, NULL);
        if (filesize == INVALID_FILE_SIZE)
        {
                printf("filesize error\n");
                return;
        }
        char *buff = (char *)malloc(filesize);
        memset(buff, 0, filesize);
        DWORD dwRead = 0;
        if (!ReadFile(hFile, buff, filesize, &dwRead, NULL))
        {
                printf("read error\n");
                return;
        }

        CoInitialize(NULL);

        IWinHttpRequestPtr pHttpReq = NULL;
        HRESULT hr = pHttpReq.CreateInstance(__uuidof(WinHttpRequest));
        if (FAILED(hr))
        {
                return;
        }

        hr = pHttpReq->Open(_T("POST"), _T("https://swhq.vhaoxun.com/api/vehicles/uswhq"));
        if (FAILED(hr))
        {
                return;
        }
        pHttpReq->SetRequestHeader(_T("Content-Type"), _T("multipart/form-data; boundary=--------------------------160208929958355896735465"));
        pHttpReq->SetRequestHeader(_T("Connection"), _T("keep-alive"));
    pHttpReq->SetRequestHeader(_T("Accept-Encoding"), _T("gzip, deflate, br"));
        pHttpReq->SetRequestHeader(_T("Content-Disposition"), _T("form-data; name=\"Token\" /r/n 9cf42470ba33c05492c7b00375ba474d"));
        pHttpReq->SetRequestHeader(_T("Content-Disposition"), _T("form-data; name=\"type\" /r/n img"));
        pHttpReq->SetRequestHeader(_T("Content-Disposition"), _T("form-data; name=\"id\" /r/n 2"));
        pHttpReq->SetRequestHeader(_T("Content-Disposition"), _T("form-data; name=\"file\"; filename=0409105026-1-2.jpg"));
        //pHttpReq->SetRequestHeader(_T("Content-Type"), _T("image/jpeg"));

        _variant_t varBlob = vtMissing;
        SAFEARRAY* psa = NULL;
        SAFEARRAYBOUND rgsabound[1];
        rgsabound[0].lLbound = 0;
        rgsabound[0].cElements = filesize;
        psa = SafeArrayCreate(VT_UI1, 1, rgsabound);
        for (long i = 0; i < (long)filesize; i++)
        {
                SafeArrayPutElement(psa, &i, buff++);
        }       

        varBlob.vt = VT_ARRAY | VT_UI1;
        varBlob.parray = psa;

        hr = pHttpReq->Send(varBlob);
        if (FAILED(hr))
        {
                return;
        }
        _bstr_t bs = pHttpReq->ResponseText;
        CString strRe = bs;
        MessageBox(strRe);