protected function _dump_streams()
{
if (strlen($this->_output_buffer)) {
$this->_transport->debug("Request:");
$this->_transport->hexDump($this->_output_buffer);
}
if (strlen($this->_input_buffer)) {
$this->_transport->debug("Response:");
$this->_transport->hexDump($this->_input_buffer);
}
}