Bug #16148: fread function leaks memory when reading from socket

From: petri.valisuo@lmf.ericsson.se Operating system: SunOS 5.8 PHP version: 4.1.2 PHP Bug Type: Sockets related Bug description: fread function leaks memory when reading from socket It seems that fread command leaks memory when data is read from a socket. It does not leak memory if it reads from open file descriptor. The speed of the process increse is as fast as the data flow, i.e. all bytes which are read leaks! Here is a program that shows the problem. We have a file server in the port 9229. When connection is opened there and about 250 MB zip file is requested, the process dies after it has received 8 MB of data. If the file is read from an open file, the process size does not increse at all, and it works perfectly. <?php $len=248532882; header("Content-Type: application/octet-stream"); header("Content-Disposition: attachment; filename=file.zip"); header("Content-Length: $len"); $pkg_size=1024; if(1) { $sock=fsockopen("localhost", 9229) or die ("Cannot open socket"); fputs($sock, "GET file.zip\r\n"); } else { $sock=fopen("file.zip", "r"); } while(!feof($sock)) { $recv_amount=(($len > $pkg_size) ? ($pkg_size): ($len)); print fread($sock, $recv_amount); $len=$len-$recv_amount; if($len<1) break; } flush(); fclose($sock); ?> Here is the configuration command of PHP 4.1.2 we are using, as reported by the phpinfo(). './configure' '--with-apache=../apache_1.3.23' '--with-ldap=/data/usr/iPlanet/ldapcsdk414' '--prefix=/data' '--enable-memory-limit' -- Edit bug report at http://bugs.php.net/?id=16148&edit=1 -- Fixed in CVS: http://bugs.php.net/fix.php?id=16148&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=16148&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=16148&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=16148&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=16148&r=support Expected behavior: http://bugs.php.net/fix.php?id=16148&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=16148&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=16148&r=submittedtwice