项目：跟乐橙云访问，需要使用HTTPS协议

    代码：

size_t CLeChengIPC::WriteResponseBody(void *ptr, size_t size, size_t nmemb, void *userData)
{
 std::string* pStrBuffer = (std::string*)userData;
 size_t nLen = size * nmemb;
 pStrBuffer->append((char*)ptr, nLen);
 return nLen;
}

int CLeChengIPC::CommunicateWithServerUsingHTTPS(const std::string &strPostData, const std::string &strUrl, std::string &strResponseData)
{
 CURL *pCurlHandle = curl_easy_init();
 curl_easy_setopt(pCurlHandle, CURLOPT_CUSTOMREQUEST, "POST");
 curl_easy_setopt(pCurlHandle, CURLOPT_URL, strUrl.c_str());

 curl_easy_setopt(pCurlHandle, CURLOPT_WRITEFUNCTION, WriteResponseBody);//设置回调函数
 curl_easy_setopt(pCurlHandle, CURLOPT_HEADER, 1);//保存HTTP头部信息到strResponseData
 curl_easy_setopt(pCurlHandle, CURLOPT_WRITEDATA, &strResponseData);//设置回调函数的参数,获取反馈信息
 curl_easy_setopt(pCurlHandle, CURLOPT_TIMEOUT, 15);//接收数据时超时设置，如果10秒内数据未接收完，直接退出
 curl_easy_setopt(pCurlHandle, CURLOPT_MAXREDIRS, 1);//查找次数，防止查找太深
 curl_easy_setopt(pCurlHandle, CURLOPT_CONNECTTIMEOUT, 5);//连接超时，这个数值如果设置太短可能导致数据请求不到就断开了
 curl_easy_setopt(pCurlHandle, CURLOPT_SSL_VERIFYPEER, false);//设定为不验证证书和HOST
 curl_easy_setopt(pCurlHandle, CURLOPT_SSL_VERIFYHOST, false);
 curl_easy_setopt(pCurlHandle, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
 curl_easy_setopt(pCurlHandle, CURLOPT_POSTFIELDS, strPostData.c_str());

 CURLcode nRet= curl_easy_perform(pCurlHandle);
 curl_easy_cleanup(pCurlHandle);

 return nRet;
}