1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 |
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23 | #include "curl_setup.h"
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24 |
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25 | #include <curl/curl.h>
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26 | #include "urldata.h"
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27 | #include "sendf.h"
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28 | #include "multiif.h"
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29 | #include "speedcheck.h"
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30 |
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31 | void Curl_speedinit(struct SessionHandle *data)
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32 | {
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33 | memset(&data->state.keeps_speed, 0, sizeof(struct timeval));
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34 | }
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35 |
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36 | CURLcode Curl_speedcheck(struct SessionHandle *data,
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37 | struct timeval now)
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38 | {
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39 | if((data->progress.current_speed >= 0) &&
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40 | data->set.low_speed_time &&
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41 | (Curl_tvlong(data->state.keeps_speed) != 0) &&
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42 | (data->progress.current_speed < data->set.low_speed_limit)) {
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43 | long howlong = Curl_tvdiff(now, data->state.keeps_speed);
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44 | long nextcheck = (data->set.low_speed_time * 1000) - howlong;
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45 |
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46 | /* We are now below the "low speed limit". If we are below it
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47 | for "low speed time" seconds we consider that enough reason
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48 | to abort the download. */
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49 | if(nextcheck <= 0) {
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50 | /* we have been this slow for long enough, now die */
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51 | failf(data,
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52 | "Operation too slow. "
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53 | "Less than %ld bytes/sec transferred the last %ld seconds",
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54 | data->set.low_speed_limit,
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55 | data->set.low_speed_time);
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56 | return CURLE_OPERATION_TIMEDOUT;
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57 | }
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58 | else {
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59 | /* wait complete low_speed_time */
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60 | Curl_expire_latest(data, nextcheck);
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61 | }
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62 | }
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63 | else {
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64 | /* we keep up the required speed all right */
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65 | data->state.keeps_speed = now;
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66 |
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67 | if(data->set.low_speed_limit)
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68 | /* if there is a low speed limit enabled, we set the expire timer to
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69 | make this connection's speed get checked again no later than when
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70 | this time is up */
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71 | Curl_expire_latest(data, data->set.low_speed_time*1000);
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72 | }
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73 | return CURLE_OK;
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74 | }
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