sharp-chat/SharpChat/Packet/ForceDisconnectPacket.cs

using System;

namespace SharpChat.Packet {
    public class ForceDisconnectPacket : ServerPacket {
        public DateTimeOffset? Expires { get; private set; }

        public ForceDisconnectPacket(DateTimeOffset? expires = null) {
            Expires = expires;
        }

        public override string Pack() {
            if(Expires.HasValue)
                return string.Format(
                    "9\t1\t{0}",
                    Expires.Value.Year >= 2100 ? -1 : Expires.Value.ToUnixTimeSeconds()
                );

            return "9\t0";
        }
    }
}