[horde] VFS SSH2 download problem

[Steffen]

Hi,

I've configured Gollem to use the SSH2 backend, with

$backends['ssh2']['disabled'] = false;
$backends['ssh2']['name'] = <host>;
$backends['ssh2']['hordeauth'] = 'full';
$backends['ssh2']['params']['hostspec'] = <host>;
$backends['ssh2']['params']['timeout'] = 20;

$backends['ssh2']['home'] = '/';
$backends['ssh2']['params']['vfsroot'] =
   '/home/'.$GLOBALS['registry']->getAuth();

All operations seems to work, except "download", "edit" and the like.
If I leave the parameters home and vfsroot unconfigured, the problem 
remains.

When I try to download a file, Horde Vfs Ssh2 readStream() is called, the 
generated URL looks OK: 
ssh2.sftp://<user>:<pwd>@<host>:22/<path>//<file>

but the Apache process surfing my request allocates 100% CPU and endlessly 
calls recvfrom/sendto syscalls with data actually. The file descriptor of 
the syscalls is the SSH connection.

If I assemble a test PHP script like this:

  $fp = fopen('ssh2.sftp://URL', 'r'); // The URL is a Copy'n'Paste from
 	// the log generated by:
 	// Horde::log("Vfs::Ssh2::fopen(".$this->_wrap($this->_getPath($path, $name)).")", 'ERR');

while ($line = fgets($fp, 100)) {
 	echo $line."<br />";
}
fclose($fp);

I get the file successfully.

If I comment out readStream() in /usr/share/php/Horde/Vfs/Ssh2.php to 
force the use of readFile(), I can download files successfully.

Can I do something to debug this issue further?

gollem                    3.0.1   stable
Horde_Vfs                 2.1.1   stable
Horde_Core                2.8.0   stable

-- 
Steffen