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@@ -1,36 +1,26 @@
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<?php
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<?php
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-function ckratelimit($headers,$echofun,$onlyret=false,$verbose=false) {//$echofun has to be the name of a defined function to pass messages to
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- $ret=null;
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- if (is_array($headers)) {
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- //echo "ckratelimit: {$headers}: ".print_r($headers,true));
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- $buff=[];
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- array_shift($headers);
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- foreach ($headers as $header)
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- if (preg_match('/^([^:]+):(.*)$/Uu',$header,$matches)===1)
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- $buff[$matches[1]]=trim($matches[2]);
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- $headers=$buff;
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- //print_r($headers);
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- if (isset($headers['Date']) && isset($headers['X-RateLimit-Reset']) && isset($headers['X-RateLimit-Remaining'])) {
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- //Wed, 30 Mar 2022 21:27:22 GMT
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- $srvnow=strtotime($headers['Date']);
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- //2022-03-31T04:05:00.058705Z
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- $srvrlreset=strtotime($headers['X-RateLimit-Reset']);
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- $srvrlremain=$headers['X-RateLimit-Remaining'];
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- $secstoreset=$srvrlreset-$srvnow;
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- $ret=['remaining'=>$srvrlremain,'secstoreset'=>$secstoreset];
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- if ($onlyret)
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- return $ret;
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- if ($verbose) $echofun("ckratelimit: X-RateLimit-Remaining: {$srvrlremain}; server time: {$srvnow}: ".gmdate('c',$srvnow).'; X-RateLimit-Reset: '.gmdate('c',$srvrlreset).'; current seconds before reset: '.$secstoreset.".\n");
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- if ($srvrlremain==0) {
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- $echofun("Reached rate limit, waiting {$secstoreset} seconds for rate limit reset ...\n");
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- sleep($secstoreset);
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- }
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- } else {
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- if ($verbose) $echofun("ckratelimit: no «Date» / «X-RateLimit-Reset» / «X-RateLimit-Remaining» header(s)!\n");
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- }
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- } else {
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- if ($verbose) $echofun("ckratelimit: headers is not an array!\n");
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- }
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- return $ret;
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+function ckratelimit($headers) {
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+ $aaheaders=[];
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+ array_shift($headers);
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+ foreach ($headers as $header)
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+ if (preg_match('#^([^:]+): (.*)$#',$header,$matches)===1)
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+ $aaheaders[strtolower($matches[1])]=$matches[2];
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+ //$aaheaders['x-ratelimit-remaining']=0;
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+ //print_r($aaheaders);
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+ if (!isset($aaheaders['date'])) return ['ok'=>false,'error'=>'no «date» header'];
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+ if (!isset($aaheaders['x-ratelimit-reset'])) return ['ok'=>false,'error'=>'no «x-ratelimit-reset» header'];
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+ if (!isset($aaheaders['x-ratelimit-remaining'])) return ['ok'=>false,'error'=>'no «x-ratelimit-remaining» header'];
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+ if (preg_match('#^\d+$#',$aaheaders['x-ratelimit-remaining'])!==1) return ['ok'=>false,'error'=>'«x-ratelimit-remaining» header is not an integer'];
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+ $remaining=$aaheaders['x-ratelimit-remaining']+0;
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+ $date=@strtotime($aaheaders['date']);
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+ if (!is_int($date)) return ['ok'=>false,'error'=>'«date» header could not be converted to a unix timestamp'];
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+ $reset=@strtotime($aaheaders['x-ratelimit-reset']);
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+ if (!is_int($reset)) return ['ok'=>false,'error'=>'«x-ratelimit-reset» header could not be converted to a unix timestamp'];
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+ // don't do the one on the line below, since it happens lots of times
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+ //if ($reset<$date) return ['ok'=>false,'error'=>'the unix timestamp parsed from «x-ratelimit-reset» header is less than the unix timestamp parsed from «date» header'];
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+ if ($remaining==0)
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+ return ['ok'=>true,'sleep'=>$reset-$date+1,'remaining'=>$remaining];
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+ else
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+ return ['ok'=>true,'sleep'=>0,'remaining'=>$remaining];
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}
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}
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?>
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?>
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