libcurl

before transfer

1. create handle
   CURL *easy_handle = curl_easy_init();

2. set options
   /* set URL to operate on */
   res = curl_easy_setopt(easy_handle, CURLOPT_URL, “http://example.com/”);

transfering

3. begine transfer
   // 3.1 simple transfer way
   res = curl_easy_perform( easy_handle );
   // 3.2 multi handle

// 3.3

post transfer

href: https://everything.curl.dev/libcurl