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low_speed_limit: improved function for longer time periods 

Previously, periods of fast speed between periods of slow speed would
not count and could still erroneously trigger a timeout.

Reported-by: Paul Harris
Fixes #1345
Closes #1390
This commit is contained in:
Daniel Stenberg 2017-04-05 00:42:34 +02:00
parent ae485279a1
commit 2d5711dc11
1 changed files with 30 additions and 29 deletions
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59
lib/speedcheck.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -33,40 +33,41 @@ void Curl_speedinit(struct Curl_easy *data)
memset(&data->state.keeps_speed, 0, sizeof(struct timeval));
}
/*
* @unittest: 1606
*/
CURLcode Curl_speedcheck(struct Curl_easy *data,
struct timeval now)
{
if((data->progress.current_speed >= 0) &&
data->set.low_speed_time &&
(Curl_tvlong(data->state.keeps_speed) != 0) &&
(data->progress.current_speed < data->set.low_speed_limit)) {
time_t howlong = Curl_tvdiff(now, data->state.keeps_speed);
time_t nextcheck = (data->set.low_speed_time * 1000) - howlong;
if((data->progress.current_speed >= 0) && data->set.low_speed_time) {
if(data->progress.current_speed < data->set.low_speed_limit) {
if(!data->state.keeps_speed.tv_sec)
/* under the limit at this very moment */
data->state.keeps_speed = now;
else {
/* how long has it been under the limit */
time_t howlong = Curl_tvdiff(now, data->state.keeps_speed);
/* We are now below the "low speed limit". If we are below it
for "low speed time" seconds we consider that enough reason
to abort the download. */
if(nextcheck <= 0) {
/* we have been this slow for long enough, now die */
failf(data,
"Operation too slow. "
"Less than %ld bytes/sec transferred the last %ld seconds",
data->set.low_speed_limit,
data->set.low_speed_time);
return CURLE_OPERATION_TIMEDOUT;
if(howlong >= data->set.low_speed_time * 1000) {
/* too long */
failf(data,
"Operation too slow. "
"Less than %ld bytes/sec transferred the last %ld seconds",
data->set.low_speed_limit,
data->set.low_speed_time);
return CURLE_OPERATION_TIMEDOUT;
}
}
}
/* wait complete low_speed_time */
Curl_expire_latest(data, nextcheck);
else
/* faster right now */
data->state.keeps_speed.tv_sec = 0;
}
else {
/* we keep up the required speed all right */
data->state.keeps_speed = now;
if(data->set.low_speed_limit)
/* if there is a low speed limit enabled, we set the expire timer to
make this connection's speed get checked again no later than when
this time is up */
Curl_expire_latest(data, data->set.low_speed_time*1000);
}
if(data->set.low_speed_limit)
/* if low speed limit is enabled, set the expire timer to make this
connection's speed get checked again in a second */
Curl_expire_latest(data, 1000);
return CURLE_OK;
}