Henrik Storner's rewrite that includes a nice usage of curl_multi_info_read()

/*

 * Download a HTTP file and upload an FTP file simultaneously.

 */

#define HANDLECOUNT 2	/* Number of simultaneous transfers */

#define HTTP_HANDLE 0	/* Index for the HTTP transfer */

#define FTP_HANDLE 1	/* Index for the FTP transfer */

int main(int argc, char **argv)

{

  CURL *http_handle;

  CURL *ftp_handle;

  CURL *handles[HANDLECOUNT];

  CURLM *multi_handle;

  int still_running; /* keep number of running handles */

  int i;

  CURLMsg *msg; /* for picking up messages with the transfer status */

  int msgs_left; /* how many messages are left */

  http_handle = curl_easy_init();

  ftp_handle  = curl_easy_init();

  /* Allocate one CURL handle per transfer */

  for (i=0; i<HANDLECOUNT; i++)

      handles[i] = curl_easy_init();

  /* set the options (I left out a few, you'll get the point anyway) */

  curl_easy_setopt(http_handle, CURLOPT_URL, "http://website.com");

  curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "http://website.com");

  curl_easy_setopt(ftp_handle, CURLOPT_URL, "ftp://ftpsite.com");

  curl_easy_setopt(ftp_handle, CURLOPT_UPLOAD, TRUE);

  curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://ftpsite.com");

  curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, TRUE);

  /* init a multi stack */

  multi_handle = curl_multi_init();

  /* add the individual transfers */

  curl_multi_add_handle(multi_handle, http_handle);

  curl_multi_add_handle(multi_handle, ftp_handle);

  for (i=0; i<HANDLECOUNT; i++)

      curl_multi_add_handle(multi_handle, handles[i]);

  /* we start some action by calling perform right away */

  while(CURLM_CALL_MULTI_PERFORM ==

  curl_multi_cleanup(multi_handle);

  curl_easy_cleanup(http_handle);

  curl_easy_cleanup(ftp_handle);

  /* See how the transfers went */

  while ((msg = curl_multi_info_read(multi_handle, &msgs_left))) {

    if (msg->msg == CURLMSG_DONE) {

       int idx, found = 0;

       /* Find out which handle this message is about */

       for (idx=0; (!found && (idx<HANDLECOUNT)); idx++) found = (msg->easy_handle == handles[idx]);

       switch (idx) {

         case HTTP_HANDLE:

	   printf("HTTP transfer completed with status %d\n", msg->data.result);

	   break;

	 case FTP_HANDLE:

	   printf("FTP transfer completed with status %d\n", msg->data.result);

	   break;

       }

    }

  }

  /* Free the CURL handles */

  for (i=0; i<HANDLECOUNT; i++)

      curl_easy_cleanup(handles[i]);

  return 0;

}