public class PacketData : IBytes {
        public string nick;
        public string text;
        public string additional;
        public PacketType type;

        public PacketData(string nick, string text, string additional = "") {
            this.nick = nick;
            this.text = text;
            this.additional = additional;
            type = PacketType.Chat;
        }

        public PacketData(PacketType type, string nick, string text) {
            this.nick = nick;
            this.text = text;
            this.type = type;
            additional = GetDataByType(type);
        }

        public PacketData(byte[] data) {
            int counter = 0;
            var l = data[counter]; // длина ника
            counter++;
            nick = BinaryToolz.BytesToUTF(Extract(data, counter, l));
            counter += l;
            l = data[counter];
            counter++;
            text = BinaryToolz.BytesToUTF(Extract(data, counter, l));
            counter += l;
            l = data[counter];
            counter++;
            if (l > 0) {
                additional = BinaryToolz.BytesToUTF(Extract(data, counter, l));
                type = GetTypeByData(additional);
            }
        }

        public byte[] GetBytes() {
            var b = new List<byte>();
            b.AddRange(BinaryToolz.UTFToBytes(nick));
            b.AddRange(BinaryToolz.UTFToBytes(text));
            b.AddRange(BinaryToolz.UTFToBytes(additional));
            return b.ToArray();
        }
}