Edit report at https://bugs.php.net/bug.php?id=48725&edit=1
ID: 48725
Comment by: dtrebbien at gmail dot com
Reported by: slusarz at curecanti dot org
Summary: Support for flushing in zlib stream
Status: Open
Type: Bug
Package: Streams related
Operating System: Linux
PHP Version: 5.2.10
Block user comment: N
Private report: N
New Comment:
See also: http://stackoverflow.com/questions/7508762/using-zlib-filter-with-a-socket-pair/
Previous Comments:
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[2009-10-23 12:25:10] jani@php.net
It's related, not same. :)
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[2009-10-22 21:40:37] slusarz at curecanti dot org
I don't think this is related to bug #49816. Turning off zlib output compression (by adding
"ini_set('zlib.output_compression', 'Off');" to the top of the test
script)doesn't alter the results from the test script previously reported.
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[2009-10-19 15:15:51] jani@php.net
See also bug #49816
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[2009-07-14 03:10:46] slusarz at curecanti dot org
<?php
// 16,000 bytes
$text = str_repeat('0123456789abcdef', 1000);
$temp = fopen('php://temp', 'r+');
stream_filter_append($temp, 'zlib.deflate', STREAM_FILTER_WRITE);
fwrite($temp, $text);
rewind($temp);
fpassthru($temp);
print "Location: " . ftell($temp) . "\n";
fclose($temp);
// Expected: compressed data; Location = some non-zero integer
// Actual: No data output; Location = 0
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[2009-06-29 20:03:00] slusarz at curecanti dot org
Description:
------------
There does not seem to be any support for flushing data in a zlib compression stream. Not sure if
this is an omission, something obvious that I am missing (and may not be in the documentation), or
the fact that the zlib stream filter does not support socket operation.
Reproduce code:
---------------
$stream = stream_socket_client([...]);
// Login to remote server & enable compression remotely (e.g. implementation of IMAP COMPRESS
extension - RFC 4978)
stream_filter_append($stream, 'zlib.deflate', STREAM_FILTER_WRITE);
stream_set_write_buffer($stream, 0);
fwrite($stream, 'Testing');
fflush($stream);
// tcpdump confirms that nothing is sent from the PHP server to the remote server. Can confirm that
upon socket timeout, the pending data is sent.
// Similarly, compressed data from incoming stream is not available either.
stream_filter_append($stream, 'zlib.inflate', STREAM_FILTER_READ);
$in = fread($stream, 8192);
// fread() on $stream will timeout.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=48725&edit=1