public function onStreamRead(IO_Stream_Interface $stream, $bytes_read)
{
$this->_read_buffer->rewind();
$data = $this->_read_buffer->read();
$echo_len = $this->_echo_buffer->getLength();
if ($echo_len) {
$data_len = strlen($data);
if ($data_len < $echo_len) {
$echo_len = $data_len;
}
$this->_echo_buffer->rewind();
$echo = $this->_echo_buffer->read($echo_len);
$possible_echo = substr($data, 0, $echo_len);
if ($possible_echo == $echo) {
$data = substr($data, $echo_len);
$this->_read_buffer->release($echo_len);
$this->_echo_buffer->release($echo_len);
}
}
$success = Telnet_Listener_Interface::SUCCESS;
if ($success === $this->_listener->onTelnetPromt($this, $data)) {
$length = strlen($data);
$this->_read_buffer->release($length);
}
}
