/**
* Attempt to lookup the LDAP servers from the DNS name.
*
* @return array The LDAP servers.
* @throws LdapConnectionException
*/
protected function getServersFromDns()
{
$servers = $this->dns->getRecord(LdapUtilities::SRV_PREFIX . $this->config->getDomainName(), DNS_SRV);
if ($servers === false || empty($servers)) {
throw new LdapConnectionException(sprintf('No LDAP servers found via DNS for "%s".', $this->config->getDomainName()));
}
array_multisort(array_column($servers, 'pri'), SORT_ASC | SORT_NUMERIC, array_column($servers, 'weight'), SORT_DESC | SORT_NUMERIC, $servers);
return array_column($servers, 'target');
}
function it_should_throw_an_error_when_no_servers_are_returned_from_dns(TcpSocket $tcp, Dns $dns)
{
$e = new LdapConnectionException('No LDAP servers found via DNS for "example.com".');
$dns->getRecord("_ldap._tcp.example.com", DNS_SRV)->willReturn(false);
$config = new DomainConfiguration('example.com');
$this->beConstructedWith($config, $tcp, $dns);
$this->shouldThrow($e)->duringGetServer();
}