diff options
| -rw-r--r-- | lib/exe/fetch.php | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/lib/exe/fetch.php b/lib/exe/fetch.php index 9157baeb8..4df204f50 100644 --- a/lib/exe/fetch.php +++ b/lib/exe/fetch.php @@ -70,7 +70,7 @@ } // finally send the file to the client - sendFile($FILE,$MIME); + sendFile($FILE,$MIME,$CACHE); /* ------------------------------------------------------------------------ */ @@ -78,15 +78,34 @@ * Set headers and send the file to the client * * @author Andreas Gohr <andi@splitbrain.org> + * @author Ben Coburn <btcoburn@silicodon.net> */ -function sendFile($file,$mime){ +function sendFile($file,$mime,$cache){ + global $conf; + $fmtime = filemtime($file); // send headers header("Content-Type: $mime"); - header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); - header('Pragma: public'); + // smart http caching headers + if ($cache==-1) { + // cache + // cachetime or one hour + header('Expires: '.gmdate("D, d M Y H:i:s", time()+max($conf['cachetime'], 3600)).' GMT'); + header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($conf['cachetime'], 3600)); + header('Pragma: public'); + } else if ($cache>0) { + // recache + // remaining cachetime + 10 seconds so the newly recached media is used + header('Expires: '.gmdate("D, d M Y H:i:s", $fmtime+$conf['cachetime']+10).' GMT'); + header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($fmtime-time()+$conf['cachetime']+10, 0)); + header('Pragma: public'); + } else if ($cache==0) { + // nocache + header('Cache-Control: must-revalidate, no-transform, post-check=0, pre-check=0'); + header('Pragma: public'); + } header('Accept-Ranges: bytes'); //send important headers first, script stops here if '304 Not Modified' response - http_conditionalRequest(filemtime($file)); + http_conditionalRequest($fmtime); list($start,$len) = http_rangeRequest(filesize($file)); //application mime type is downloadable |