text: /*****************************************************************************
   *                                  _   _ ____  _     
   *  Project                     ___| | | |  _ \| |    
   *                             / __| | | | |_) | |    
   *                            | (__| |_| |  _ <| |___ 
   *                             \___|\___/|_| \_\_____|
   *
   * $Id: multi-double.c,v 1.4 2006-10-13 14:01:19 bagder Exp $
   *
   * This is a very simple example using the multi interface.
   */
  
  #include <stdio.h>
  #include <string.h>
  
  /* somewhat unix-specific */
  #include <sys/time.h>
  #include <unistd.h>
  
  /* curl stuff */
  #include <curl/curl.h>
  
  /*
   * Simply download two HTTP files!
   */
  int main(int argc, char **argv)
  {
    CURL *http_handle;
    CURL *http_handle2;
    CURLM *multi_handle;
  
    int still_running; /* keep number of running handles */
  
    http_handle = curl_easy_init();
    http_handle2 = curl_easy_init();
  
    /* set options */
    curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.haxx.se/");
  
    /* set options */
    curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
  
    /* 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, http_handle2);
  
    /* we start some action by calling perform right away */
    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);
  
      /* In a real-world program you OF COURSE check the return code of the
         function calls, *and* you make sure that maxfd is bigger than -1 so
         that the call to select() below makes sense! */
  
      rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
  
      switch(rc) {
      case -1:
        /* select error */
        break;
      case 0:
      default:
        /* timeout or readable/writable sockets */
        while(CURLM_CALL_MULTI_PERFORM ==
              curl_multi_perform(multi_handle, &still_running));
        break;
      }
    }
  
    curl_multi_cleanup(multi_handle);
  
    curl_easy_cleanup(http_handle);
    curl_easy_cleanup(http_handle2);
  
    return 0;
  }
  