curl_easy_perform返回值只表明此函数执行的情况，若要得到http response，必须在执行curl_easy_perform之后调用curl_easy_getinfo获取，例如：
1 2 3 4 | long retcode = 0; int ret = curl_easy_getinfo(_curlHandle, CURLINFO_RESPONSE_CODE , &retcode); if ((CURLE_OK == ret) && retcode) cout<<"response: "<<retcode<<endl; |