===== Other - FAQ =====


==== Retrieving tracking data via sFTP ====


Example using libssh2:


<code>
<?php
$connection = ssh2_connect('tracking.pdi.elanders-germany.com', 22);
ssh2_auth_password($connection, 'USERNAME', 'PASSWORT');

$sftp = ssh2_sftp($connection);

$handle = opendir("ssh2.sftp://$sftp/./");
echo "Directory handle: $handle\n";
echo "Entries:\n";
while (false != ($entry = readdir($handle))){
    echo "$entry\n";
}

… then use a loop with ssh2_scp_recv to retrieve the data …

… and then delete the file with ssh2_sftp_unlink.
</code>


Alternative using phpseclib:


[[http://phpseclib.sourceforge.net|http://phpseclib.sourceforge.net]] 


==== Public Key ====


<code>
Create the RFC 4716 version of the public key using ssh-keygen
ssh-keygen -e -f ~/.ssh/id_dsa> ~/.ssh/id_dsa_com.pub

Store the key on the server here:
File: ~/.sftp/authorized_keys
</code>

==== Max. Connection to PDI sFTP servers ====

<code>
MaxClients 2000
MaxClientsPerHost 5
MaxClientsPerUser 15
MaxHostsPerUser 1000
</code>