code: сохранение данных из сети в буфер

main.cpp

@@ -34,6 +34,15 @@ Input input_data(istream& stream, bool prompt) {
   stream >> in.bin_count;
   return in;
 }
+
+size_t
+write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
+    size_t data_size = item_size * item_count;
+    stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
+    (*buffer).write(reinterpret_cast<const char*>(items), data_size);
+    return data_size;
+}
+
 Input
 download(const string& address) {
     stringstream buffer;
@@ -41,6 +50,8 @@ download(const string& address) {
     if(curl) {
         CURLcode res;
         curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
         res = curl_easy_perform(curl);
         if (res!=CURLE_OK){
             cerr << curl_easy_strerror(res);