text: /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
   *
   * This software is licensed as described in the file COPYING, which
   * you should have received as part of this distribution. The terms
   * are also available at https://curl.haxx.se/docs/copyright.html.
   *
   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   * copies of the Software, and permit persons to whom the Software is
   * furnished to do so, under the terms of the COPYING file.
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   * KIND, either express or implied.
   *
   ***************************************************************************/
  /* <DESC>
   * Simple HTTP GET that stores the headers in a separate file
   * </DESC>
   */
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  
  #include <curl/curl.h>
  
  static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) {
      size_t written = fwrite(ptr, size, nmemb, (FILE *) stream);
      return written;
  }
  
  int main(void) {
      CURL *curl_handle;
      static const char *headerfilename = "head.out";
      FILE *headerfile;
      static const char *bodyfilename = "body.out";
      FILE *bodyfile;
  
      curl_global_init(CURL_GLOBAL_ALL);
  
      /* init the curl session */
      curl_handle = curl_easy_init();
  
      /* set URL to get */
      curl_easy_setopt(curl_handle, CURLOPT_URL, "https://example.com");
  
      /* no progress meter please */
      curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
  
      /* send all data to this function  */
      curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
  
      /* open the header file */
      headerfile = fopen(headerfilename, "wb");
      if (!headerfile) {
          curl_easy_cleanup(curl_handle);
          return -1;
      }
  
      /* open the body file */
      bodyfile = fopen(bodyfilename, "wb");
      if (!bodyfile) {
          curl_easy_cleanup(curl_handle);
          fclose(headerfile);
          return -1;
      }
  
      /* we want the headers be written to this file handle */
      curl_easy_setopt(curl_handle, CURLOPT_HEADERDATA, headerfile);
  
      /* we want the body be written to this file handle instead of stdout */
      curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, bodyfile);
  
      /* get it! */
      curl_easy_perform(curl_handle);
  
      /* close the header file */
      fclose(headerfile);
  
      /* close the body file */
      fclose(bodyfile);
  
      /* cleanup curl stuff */
      curl_easy_cleanup(curl_handle);
  
      return 0;
  }
  