lib/speedcheck.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2017, 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 https://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  ***************************************************************************/
  22
  23 #include "curl_setup.h"
  24
  25 #include <curl/curl.h>
  26 #include "urldata.h"
  27 #include "sendf.h"
  28 #include "multiif.h"
  29 #include "speedcheck.h"
  30
  31 void Curl_speedinit(struct Curl_easy *data)
  32 {
  33   memset(&data->state.keeps_speed, 0, sizeof(struct curltime));
  34 }
  35
  36 /*
  37  * @unittest: 1606
  38  */
  39 CURLcode Curl_speedcheck(struct Curl_easy *data,
  40                          struct curltime now)
  41 {
  42   if((data->progress.current_speed >= 0) && data->set.low_speed_time) {
  43     if(data->progress.current_speed < data->set.low_speed_limit) {
  44       if(!data->state.keeps_speed.tv_sec)
  45         /* under the limit at this very moment */
  46         data->state.keeps_speed = now;
  47       else {
  48         /* how long has it been under the limit */
  49         timediff_t howlong = Curl_timediff(now, data->state.keeps_speed);
  50
  51         if(howlong >= data->set.low_speed_time * 1000) {
  52           /* too long */
  53           failf(data,
  54                 "Operation too slow. "
  55                 "Less than %ld bytes/sec transferred the last %ld seconds",
  56                 data->set.low_speed_limit,
  57                 data->set.low_speed_time);
  58           return CURLE_OPERATION_TIMEDOUT;
  59         }
  60       }
  61     }
  62     else
  63       /* faster right now */
  64       data->state.keeps_speed.tv_sec = 0;
  65   }
  66
  67   if(data->set.low_speed_limit)
  68     /* if low speed limit is enabled, set the expire timer to make this
  69        connection's speed get checked again in a second */
  70     Curl_expire(data, 1000, EXPIRE_SPEEDCHECK);
  71
  72   return CURLE_OK;
  73 }