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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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 }
     74