CInternetSession CHttpFile Post提交数据

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//给指定url发请求, 返回请求后的结果 string CAutoPatchDlg::SendURLPost(string strServerName, string strFormActionUrl, string strPostStr) {     CString strFormData(strPostStr.c_str());    // 需要提交的数据 CInternetsess sess("HttpClient");   //连结超时没效果的, 发送超时与接收超时有用, 连结超时可以用多线程WaitForSingleObject来实现 sess.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 5000); // 5000毫秒的连接超时 sess.SetOption(INTERNET_OPTION_SEND_TIMEOUT, 5000); // 5000毫秒的发送超时 sess.SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT, 5000); // 5000毫秒的接收超时 sess.SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT, 5000); // 5000毫秒的发送超时 sess.SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 5000); // 5000毫秒的接收超时 sess.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1); // 1次重试       CString strHeaders = _T("Content-Type: application/x-www-form-urlencoded"); // 请求头     CHttpConnection *pConnection = sess.GetHttpConnection(strServerName.c_str());     CHttpFile *pFile = pConnection->OpenRequest(CHttpConnection::HTTP_VERB_POST, strFormActionUrl.c_str());           CString strSentence, strGetSentence = "";     if(pFile)     {         BOOL result = pFile->SendRequest(strHeaders, (LPVOID)(LPCTSTR)strFormData, strFormData.GetLength());         while(pFile->ReadString(strSentence))  // 读取提交数据后的返回结果             strGetSentence = strGetSentence + strSentence + char(13) + char(10);         pFile->Close();         delete pFile;         sess.Close();         return string(strGetSentence.GetBuffer());     }     return ""; }

　　

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string strResult = "";     string strServerName = "www.test.com";     string strFormActionUrl = "/index.php";     string strPostData = "username=" + strUserName + "&password=" + strPassword; strResult = SendURLPost(strServerName, strFormActionUrl, strPostData);

　　

这个方法有个缺陷, 网络不通SendRequest会等待几十秒, 感觉像卡死了似的.