在C ++中的函数中使用CURL

Question

I'm trying tu use curl in c++ using function. Example:

#define ...
...
...

/*  CURL parameters */
CURL *curl = curl_easy_init();
CURLcode res;
string readBuffer;

void setHeader(){
    if(curl) {
        /*  Headers */
        struct curl_slist *chunk = NULL;
        chunk = NULL;
        chunk = curl_slist_append(chunk, "Connection:keep-alive");
        ..
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer); 
    }    
}

void myFunction1(){
    setHeader();
    curl_easy_setopt(curl, CURLOPT_URL, "....");
    curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookiePath);
    curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookiePath);
    res = curl_easy_perform(curl);
    cout << readBuffer;
    curl_easy_cleanup(curl); 
}

void myFunction2(){
    setHeader();
    curl_easy_setopt(curl, CURLOPT_URL, "....");
    curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookiePath);
    curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookiePath);
    res = curl_easy_perform(curl);
    cout << readBuffer;
    curl_easy_cleanup(curl);
}

In the main function i call myFunction1 or myFunction2;

I don't know if is right to use libcurl in this way, but I'm having a problem. I use this to login in my site, so I save the cookie whit this code:

curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookiePath);
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookiePath);

int main(){
curl_global_init(CURL_GLOBAL_ALL);
myFunction1();
myFunction2();
curl_global_cleanup();
}

Suppose i login and save the cookie in myFunction1. When I'm trying to set in the myFunction2 it crash on the CURLOPT_COOKIEFILE row. I don't know why the cookie is saved in the file, but it can't be used beacuse when I run the program it crash on that row.

Sorry for my English Thank's

Answer 1

The reason of my problem is that when I use the curl_easy_cleanup(curl) and then curl_easy_init I change the sessionID, so the cookie that I've saved are no longer good. So I use at the first curl_easy_init, then I make all my request in my functions, and at the end of my program I use curl_easy_cleanup. To clean the CURL OPTION you can use: curl_easy_reset(). I've update this post for people that can have my same problem.