+
+ /**
+ * Detects the server network type from contacts of that server
+ *
+ * @param string $url URL of the given server
+ * @param array $serverdata array with server data
+ *
+ * @return array server data
+ */
+ private static function detectFromContacts(string $url, array $serverdata)
+ {
+ $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
+ if (empty($gserver)) {
+ return $serverdata;
+ }
+
+ $contact = Contact::selectFirst(['id'], ['uid' => 0, 'failed' => false, 'gsid' => $gserver['id']]);
+
+ // Via probing we can be sure that the server is responding
+ if (!empty($contact['id']) && Contact::updateFromProbe($contact['id'])) {
+ $contact = Contact::selectFirst(['network', 'failed'], ['id' => $contact['id']]);
+ if (!$contact['failed'] && in_array($contact['network'], Protocol::FEDERATED)) {
+ $serverdata['network'] = $contact['network'];
+ }
+ }
+
+ return $serverdata;
+ }