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curl/lib/speedcheck.c
Daniel Stenberg b9d25f9a6b timediff: return timediff_t from the time diff functions
... to cater for systems with unsigned time_t variables.

- Renamed the functions to curlx_timediff and Curl_timediff_us.

- Added overflow protection for both of them in either direction for
  both 32 bit and 64 bit time_ts

- Reprefixed the curlx_time functions to use Curl_*

Reported-by: Peter Piekarski
Fixes #2004
Closes #2005
2017-10-25 09:54:37 +02:00

74 lines
2.4 KiB
C

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* 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
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#include <curl/curl.h>
#include "urldata.h"
#include "sendf.h"
#include "multiif.h"
#include "speedcheck.h"
void Curl_speedinit(struct Curl_easy *data)
{
memset(&data->state.keeps_speed, 0, sizeof(struct curltime));
}
/*
* @unittest: 1606
*/
CURLcode Curl_speedcheck(struct Curl_easy *data,
struct curltime now)
{
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 */
timediff_t howlong = Curl_timediff(now, data->state.keeps_speed);
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;
}
}
}
else
/* faster right now */
data->state.keeps_speed.tv_sec = 0;
}
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(data, 1000, EXPIRE_SPEEDCHECK);
return CURLE_OK;
}