问题描述

关于MFC中SendRequest操作超时的函数

这个是我用HttpWatch抓到的的包，那个圈起来的字符粘到vc6中就成?了，怎么办？

 #include "AFXINET.H"

INT CLOGIN::GetFile(const CString strUrl)//,const CString strSavePath)
{
//  AfxMessageBox(strUrl);

    unsigned short nPort;       //用于保存目标HTTP服务端口
    CString strServer, strObject;//strServer用于保存服务器地址，strObject用于保存文件对象名称
    DWORD dwServiceType,dwRet; //dwServiceType用于保存服务类型,dwRet用于保存提交GET请求返回的状态号   

    //解析URL，获取信息
    if(!AfxParseURL(strUrl, dwServiceType, strServer, strObject, nPort))
    {
        //解析失败，该Url不正确
        return -1;
    }
    //创建网络连接对象，HTTP连接对象指针和用于该连接的HttpFile文件对象指针，注意delete
    CInternetSession intsess;
    CHttpFile *pHtFile = NULL; 

    //建立网络连接
    CHttpConnection *pHtCon = intsess.GetHttpConnection(strServer,nPort);//_T("120620223"),_T("1a993111a5"));
    if(pHtCon == NULL)
    {
        //建立网络连接失败
        intsess.Close();
        return -2;
    }  

    CString FormDataType = _T("Content-Type:application/x-www-form-urlencoded");
    //CString m_formdat = _T("action=login&login_username=120620223&login_password=1a993111a5");
    CString m_formdat = _T("RadioButtonList1=???&TextBox2=1a993111a &txtUserName=120620223");

    //发起GET请求
    pHtFile = pHtCon->OpenRequest(CHttpConnection::HTTP_VERB_GET,strObject);
    if(pHtFile == NULL)
    {
        //发起GET请求失败
        intsess.Close();
        delete pHtCon;
        pHtCon = NULL;
        return -3;
    }
    //提交请求头信息
    pHtFile->AddRequestHeaders(_T("POST /(gac14yvwcsjrzj45cx1fq4ed)/default2.aspx HTTP/1.1"));
    pHtFile->AddRequestHeaders(_T("Accept:text/html, application/xhtml+xml, */*"));
    pHtFile->AddRequestHeaders(_T("Accept-Encoding:gzip, deflate"));
    pHtFile->AddRequestHeaders(_T("Accept-Language:zh-CN"));
    pHtFile->AddRequestHeaders(_T("Cache-Control:no-cache"));
    pHtFile->AddRequestHeaders(_T("Connection:Keep-Alive"));
    pHtFile->AddRequestHeaders(_T("Content-Length:192"));
    pHtFile->AddRequestHeaders(_T("Content-Type:application/x-www-form-urlencoded"));
    pHtFile->AddRequestHeaders(_T("Cookie:safedog-flow-item=40A0DA8385864A8908D8E58047659734;"));

    pHtFile->AddRequestHeaders(_T("DNT:1"));
    pHtFile->AddRequestHeaders(_T("Host:202.200.144.63"));
    pHtFile->AddRequestHeaders(_T("Referer:http://202.200.144.63/(gac14yvwcsjrzj45cx1fq4ed)/default2.aspx"));

    pHtFile->AddRequestHeaders(_T("User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"));
    pHtFile->AddRequestHeaders(_T("ASP.NET_SessionId=hdlg1oi5wz1ibd3ot3omqhr3"));
    pHtFile->AddRequestHeaders(_T("X-HttpWatch-RID  74624-10032"));

    pHtFile->SendRequest(FormDataType,FormDataType.GetLength(),(LPVOID)(LPCTSTR)m_formdat,m_formdat.GetLength()); 

    //获取服务器返回的状态号
    pHtFile->QueryInfoStatusCode(dwRet);
    if (dwRet != HTTP_STATUS_OK)
    {
        //服务器不接受请求
        intsess.Close();
        delete pHtCon;
        pHtCon = NULL;
        delete pHtFile;
        pHtFile = NULL;
        return -4;
    }

解决方案

MFC关于窗口的有关操作

解决方案二：

数据可能不是字符串，编码格式。
网络超时，先检查网络连接，服务器访问等

解决方案三：

我调试运行了几次，异常都是从下边这句抛出的，然后就出现提示框“操作超时”

pHtFile->SendRequest(FormDataType,FormDataType.GetLength(),(LPVOID)(LPCTSTR)m_formdat,m_formdat.GetLength());