#include <stdio.h>
#include <string.h>
#include <sys/time.h>

#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>

#if LIBCURL_VERSION_NUM < 0x070900
#error "curl_formadd() is not introduced until libcurl 7.9 and later"
#endif

int main(int argc, char *argv[])
{
  CURL *curl;
  CURLcode res;

  CURLM *multi_handle;
  int still_running;

  struct HttpPost *formpost=NULL;
  struct HttpPost *lastptr=NULL;
  struct curl_slist *headerlist=NULL;
  char buf[] = "Expect:";

  /* Fill in the file upload field */
  curl_formadd(&formpost,
               &lastptr,
               CURLFORM_COPYNAME, "sendfile",
               CURLFORM_FILE, "postit2.c",
               CURLFORM_END);

  /* Fill in the filename field */
  curl_formadd(&formpost,
               &lastptr,
               CURLFORM_COPYNAME, "filename",
               CURLFORM_COPYCONTENTS, "postit2.c",
               CURLFORM_END);


  /* Fill in the submit field too, even if this is rarely needed */
  curl_formadd(&formpost,
               &lastptr,
               CURLFORM_COPYNAME, "submit",
               CURLFORM_COPYCONTENTS, "send",
               CURLFORM_END);

  curl = curl_easy_init();
  multi_handle = curl_multi_init();

  /* initalize custom header list (stating that Expect: 100-continue is not
     wanted */
  headerlist = curl_slist_append(headerlist, buf);
  if(curl && multi_handle) {
    /* what URL that receives this POST */
    curl_easy_setopt(curl, CURLOPT_URL, "http://curl.haxx.se/examplepost.cgi");
    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);

    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
    curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);

	//curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);

    //res = curl_easy_perform(curl);

    curl_multi_add_handle(multi_handle, curl);

    while(CURLM_CALL_MULTI_PERFORM ==
          curl_multi_perform(multi_handle, &still_running));

    while(still_running) {
      struct timeval timeout;
      int rc; /* select() return code */

      fd_set fdread;
      fd_set fdwrite;
      fd_set fdexcep;
      int maxfd;

      FD_ZERO(&fdread);
      FD_ZERO(&fdwrite);
      FD_ZERO(&fdexcep);

      /* set a suitable timeout to play around with */
      timeout.tv_sec = 1;
      timeout.tv_usec = 0;

      /* get file descriptors from the transfers */
      curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);

      rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);

      switch(rc) {
      case -1:
        /* select error */
        break;
      case 0:
        printf("timeout!\n");
      default:
        /* timeout or readable/writable sockets */
        //printf("perform!\n");
        curl_multi_perform(multi_handle, &still_running);
        break;
      }
    }

	curl_multi_cleanup(multi_handle);

    /* always cleanup */
    curl_easy_cleanup(curl);

    /* then cleanup the formpost chain */
    curl_formfree(formpost);

    /* free slist */
    curl_slist_free_all (headerlist);
  }
  return 0;
}