/**
* Start TLS negotiation on the current connection.
*
* Returns true if the TLS connection was successfully
* established.
*
* @throws Protocol\Exception
* if the server returned a negative response.
* @throws Connection_Exception
* if the TLS negotiation has failed.
* @return bool
*/
protected function _starttls()
{
$this->_send("STARTTLS");
$resp = $this->_getResponse(true);
if ($this->_isResponseOk($resp, 220) === false) {
throw new Protocol\Exception("The server returned a negative response to the STARTTLS command: {$resp}");
}
parent::_starttls();
return true;
}
/**
* Start TLS negotiation on the current connection.
*
* Returns true if the TLS connection was successfully
* established.
*
* @throws Protocol\Exception
* if the server returned a negative response to the STLS
* (STARTTLS) command
* or if the TLS negotiation has failed.
* @return bool
*/
protected function _starttls()
{
$this->_isServerCapable("STLS");
$this->_validateState(self::STATE_AUTHORIZATION, 'STLS');
$this->_send("STLS");
$resp = $this->_getResponse();
if ($this->_isResponseOk($resp) !== true) {
throw new Protocol\Exception("The server returned a negative response to the STLS command: {$resp}");
}
parent::_starttls();
return true;
}