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Example libcurl GET request
#include <curl/curl.h>
#include <string>
size_t writeFunction(void *ptr, size_t size, size_t nmemb, std::string* data) {
data->append((char*) ptr, size * nmemb);
return size * nmemb;
int main(int argc, char** argv) {
auto curl = curl_easy_init();
if (curl) {
curl_easy_setopt(curl, CURLOPT_URL, "");
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);
curl_easy_setopt(curl, CURLOPT_USERPWD, "user:pass");
curl_easy_setopt(curl, CURLOPT_USERAGENT, "curl/7.42.0");
curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 50L);
curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
std::string response_string;
std::string header_string;
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFunction);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response_string);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &header_string);
char* url;
long response_code;
double elapsed;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &elapsed);
curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
curl = NULL;

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commented Aug 17, 2019

Small note, if you want to get proper values in url, response_code and elapsed you need call curl_easy_getinfo methods after curl_easy_perform(curl);

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