1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2006, 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 1.23 2007-08-30 20:34:57 danf 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 "multiif.h"
33 #include "speedcheck.h"
34
Curl_speedinit(struct SessionHandle * data)35 void Curl_speedinit(struct SessionHandle *data)
36 {
37 memset(&data->state.keeps_speed, 0, sizeof(struct timeval));
38 }
39
Curl_speedcheck(struct SessionHandle * data,struct timeval now)40 CURLcode Curl_speedcheck(struct SessionHandle *data,
41 struct timeval now)
42 {
43 if((data->progress.current_speed >= 0) &&
44 data->set.low_speed_time &&
45 (Curl_tvlong(data->state.keeps_speed) != 0) &&
46 (data->progress.current_speed < data->set.low_speed_limit)) {
47 long howlong = Curl_tvdiff(now, data->state.keeps_speed);
48
49 /* We are now below the "low speed limit". If we are below it
50 for "low speed time" seconds we consider that enough reason
51 to abort the download. */
52
53 if( (howlong/1000) > data->set.low_speed_time) {
54 /* we have been this slow for long enough, now die */
55 failf(data,
56 "Operation too slow. "
57 "Less than %d bytes/sec transfered the last %d seconds",
58 data->set.low_speed_limit,
59 data->set.low_speed_time);
60 return CURLE_OPERATION_TIMEDOUT;
61 }
62 Curl_expire(data, howlong);
63 }
64 else {
65 /* we keep up the required speed all right */
66 data->state.keeps_speed = now;
67
68 if(data->set.low_speed_limit)
69 /* if there is a low speed limit enabled, we set the expire timer to
70 make this connection's speed get checked again no later than when
71 this time is up */
72 Curl_expire(data, data->set.low_speed_time*1000);
73 }
74 return CURLE_OK;
75 }
76