C ++中的Curl-无法从HTTPS获取数据 [英] Curl in C++ - Can't get data from HTTPS

问题描述

当我尝试使用代码从HTTPS获取数据

When I trying to get data from HTTPS with code

static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}

string* NetIO::getUrlContent(string URL) {

    CURL *curl;
    CURLcode res;
    string *s = new string("");

    curl = curl_easy_init();
    if (curl) {
        //curl_easy_setopt(curl, CURLOPT_URL, URL);         
        curl_easy_setopt(curl, CURLOPT_URL, "https://ya.ru/");
        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, s);
        res = curl_easy_perform(curl);
        curl_easy_cleanup(curl);

    }

    return s;
}

它无法接收HTTPS响应的内容并将其写入 s 变量- s 包含".但是，如果我将URL更改为HTTP，则此代码可以很好地工作，并且 s 包含页面的HTML代码.

It can't receive content of HTTPS response and write it to the s variable - s contains "". But if I change URL to HTTP - this code works very well and s contains HTML code of the page.

curl_easy_setopt(curl, CURLOPT_URL, "http://tatarstan.shop.megafon.ru/");

如何解决此问题?

谢谢！❤

更新:如果我添加

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);

比我的代码效果更好.为什么没有CURLOPT_SSL_VERIFYPEER = 0不能正常工作?

Than my code works well. Why it can't work without CURLOPT_SSL_VERIFYPEER=0?

我有一些Visual Studio解决方案.它包含2个项目-libcurl，该项目使用设置进行编译:

I have some Visual Studio solution. It contains 2 project - libcurl, that compiled with settings:

和第二个项目，这取决于libcurl项目:

and second project, that depends on libcurl project:

推荐答案

已解决！感谢@hank！

Solved! Thanks to @hank!

我的解决方法是:

1)在Google Chrome浏览器中打开您的网站，打开证书信息.

1) Open your site in Google Chrome, open certificate info.

2)导出它，并将其每个父证书导出为X.509.将Concat证书文件合并为一个证书文件-制作证书链.

2) Export it and each of his parent certs as X.509. Concat cert files into the one cert file - make cert chain.

3)将带有证书链的文件与代码一起使用

3) Use file with cert chain with the code

curl_easy_setopt(curl, CURLOPT_CAINFO, "c:\\Art\\Projects\\LifeSimLauncher\\MyStaticLib\\lifesim.biz.crt.cer");

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