HTTP GET请求

CString HttpGetRequest(CString strServerName, int nPort, CString strUrl, CString sParam){ ???if (strServerName.IsEmpty()) ???{ ???????return ""; ???} ???if (strServerName.Mid(strServerName.GetLength() - 1, 1) == "/") ???{ ???????strServerName = strServerName.Mid(0, strServerName.GetLength() - 1); ???} ???if (strServerName.Find(L"http://") == 0) ???{ ???????int nLength = strlen("http://"); ???????strServerName = strServerName.Mid(nLength, strServerName.GetLength() - nLength); ???} ???if (strServerName.Find(L"https://") == 0) ???{ ???????int nLength = strlen("https://"); ???????strServerName = strServerName.Mid(nLength, strServerName.GetLength() - nLength); ???} ???????HINTERNET hInternet = (HINSTANCE)InternetOpen(L"User-Agent", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0); ???if (!hInternet) ???{ ???????return ""; ???} ???HINTERNET hConnect = (HINSTANCE)InternetConnect(hInternet, strServerName, nPort, NULL, L"HTTP/1.1", INTERNET_SERVICE_HTTP, 0, 0); ???if (!hConnect) ???{ ???????if (hInternet) InternetCloseHandle(hInternet); ???????return ""; ???} ???CString strRequestParam = strUrl; ???if (!sParam.IsEmpty()) ???{ ???????strRequestParam = strUrl + L"?" + sParam; ???} ???????HINTERNET hRequest = (HINSTANCE)HttpOpenRequest(hConnect, L"GET", strRequestParam, L"HTTP/1.1", NULL, NULL, INTERNET_FLAG_RELOAD, 0); ???if (!hRequest) ???{ ???????if (hConnect) InternetCloseHandle(hConnect); ???????if (hInternet) InternetCloseHandle(hInternet); ???????return ""; ???} ???bool bRet; ???????//bRet = HttpAddRequestHeaders(hRequest,"Content-Type: application/x-www-form-urlencoded",Len(FORMHEADERS),HTTP_ADDREQ_FLAG_REPLACE | HTTP_ADDREQ_FLAG_ADD); ?????bRet = HttpSendRequest(hRequest, NULL, 0, NULL, 0); ???std::string strResponse; ???while (TRUE) ???{ ???????char cReadBuffer[4096]; ???????unsigned long ulReadByteSize; ???????bRet = InternetReadFile(hRequest, cReadBuffer, sizeof(cReadBuffer)-1, &ulReadByteSize); ???????if (!bRet || !ulReadByteSize)break; ???????cReadBuffer[ulReadByteSize] = 0; ???????strResponse = strResponse + cReadBuffer; ???} ???if (hRequest) InternetCloseHandle(hRequest); ???if (hConnect) InternetCloseHandle(hConnect); ???if (hInternet) InternetCloseHandle(hInternet); ???CString csResponse = UTOCS(strResponse); ???return csResponse;}

CString sRet = TaskMgr::GetInstance()->HttpGetRequest("https://passport.cnblogs.com", 80, "agreement.html", "");