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 }
74