public function handshake(AbstractSocket $socket)
{
$data = $socket->recv();
$headers = $this->headers($data);
$version = '';
// check HyBi/IETF version
if (isset($headers['version'])) {
# HyBi-07 report version 7
# HyBi-08 - HyBi-12 report version 8
# HyBi-13 reports version 13
if (in_array($headers['version'], ['7', '8', '13'])) {
$version = 'hybi-' . $headers['version'];
} else {
new SocketException('Unsupported protocol version: ' . $headers['version']);
}
$key = $headers['sec-key'];
# Generate the hash value for the accept header
$accept = $key . self::GUID;
$accept = sha1($accept);
$accept = pack('H*', $accept);
$accept = base64_encode($accept);
$response = str_replace('{key}', $accept, self::HANDSHAKE_HYBI);
$socket->write($response . "\r\n");
return true;
} else {
$socket->write('Protocol not implemented');
return false;
}
}
/**
* Accepts a connection. Wrapper to return a CustomSocket instance.
*
* @throws SocketException
*
* @return Socket
*/
public function accept()
{
return new self(parent::accept());
}
