Added DnsRecords class.

src/base/net/dns/DnsRecords.h

@@ -0,0 +1,48 @@
+/* XMRig
+ * Copyright (c) 2018-2021 SChernykh   <https://github.com/SChernykh>
+ * Copyright (c) 2016-2021 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XMRIG_DNSRECORDS_H
+#define XMRIG_DNSRECORDS_H
+
+
+#include "base/net/dns/DnsRecord.h"
+
+
+namespace xmrig {
+
+
+class DnsRecords
+{
+public:
+    inline bool isEmpty() const       { return m_ipv4.empty() && m_ipv6.empty(); }
+
+    const DnsRecord &get(DnsRecord::Type prefered = DnsRecord::A) const;
+    size_t count(DnsRecord::Type type = DnsRecord::Unknown) const;
+    void clear();
+    void parse(addrinfo *res);
+
+private:
+    std::vector<DnsRecord> m_ipv4;
+    std::vector<DnsRecord> m_ipv6;
+};
+
+
+} /* namespace xmrig */
+
+
+#endif /* XMRIG_DNSRECORDS_H */