/**
* Waits for particular PDU (with known command id and sequence no) for some period of time ($to).
* All unmatched PDUs go to $this->pdu_inc array
* @access public
* @param int $cmd Command id
* @param int $sqn Sequence no
* @param int $to Timeout (miliseconds)
* @return mixed PDU on success, FALSE on error
*/
public function pdu_wait_for($cmd, $sqn = null, $to = 60000)
{
if ($this->state != CSS_CONNECTED) {
return false;
}
l('Will wait for ' . $this->translate_cmd($cmd) . ' with sqn no ' . $sqn);
list($usec, $sec) = explode(' ', microtime());
$now = $start = $sec + $usec;
while ($now - $start < $to / 1000) {
if (false !== ($pdu = $this->pdu_read())) {
$hdr = $this->sunpack('Nlen/Ncmd/Nstat/Nsqn', substr($pdu, 0, 16));
l('Got ' . $this->translate_cmd($hdr['cmd']) . ' (' . $hdr['cmd'] . ') with sqn no ' . $hdr['sqn']);
if ($hdr['cmd'] == $cmd && ($hdr['sqn'] == $sqn || $sqn == null)) {
l('Thats it. Returned.');
return $pdu;
} elseif ($hdr['cmd'] == 0x15) {
// Got ENQUIRELINK - replying
if (!$this->send(NIMF_esme::form_pdu(ENQUIRELINK | ACK, array('sqn' => $hdr['sqn'])))) {
l('Could not send ENQUIRELINK_ACK');
}
} else {
$this->pdu_inc[] = $pdu;
}
} else {
if ($this->state != CSS_CONNECTED) {
l('Disconnection happened.');
return false;
}
}
list($usec, $sec) = explode(' ', microtime());
$now = $sec + $usec;
}
l('PDU we were waiting for didn\'t arrive.');
return false;
}
