neo/curl/lib/speedcheck.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
   9  *
  10  * This software is licensed as described in the file COPYING, which
  11  * you should have received as part of this distribution. The terms
  12  * are also available at http://curl.haxx.se/docs/copyright.html.
  13  *
  14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15  * copies of the Software, and permit persons to whom the Software is
  16  * furnished to do so, under the terms of the COPYING file.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  * $Id: speedcheck.c,v 1.19 2004/01/07 09:19:35 bagder Exp $
  22  ***************************************************************************/
  23
  24 #include "setup.h"
  25
  26 #include <stdio.h>
  27 #include <string.h>
  28
  29 #include <curl/curl.h>
  30 #include "urldata.h"
  31 #include "sendf.h"
  32 #include "speedcheck.h"
  33
  34 void Curl_speedinit(struct SessionHandle *data)
  35 {
  36   memset(&data->state.keeps_speed, 0, sizeof(struct timeval));
  37 }
  38
  39 CURLcode Curl_speedcheck(struct SessionHandle *data,
  40                          struct timeval now)
  41 {
  42   if((data->progress.current_speed >= 0) &&
  43      data->set.low_speed_time &&
  44      (Curl_tvlong(data->state.keeps_speed) != 0) &&
  45      (data->progress.current_speed < data->set.low_speed_limit)) {
  46
  47     /* We are now below the "low speed limit". If we are below it
  48        for "low speed time" seconds we consider that enough reason
  49        to abort the download. */
  50
  51     if( (Curl_tvdiff(now, data->state.keeps_speed)/1000) >
  52         data->set.low_speed_time) {
  53       /* we have been this slow for long enough, now die */
  54       failf(data,
  55             "Operation too slow. "
  56             "Less than %d bytes/sec transfered the last %d seconds",
  57             data->set.low_speed_limit,
  58             data->set.low_speed_time);
  59       return CURLE_OPERATION_TIMEOUTED;
  60     }
  61   }
  62   else {
  63     /* we keep up the required speed all right */
  64     data->state.keeps_speed = now;
  65   }
  66   return CURLE_OK;
  67 }