sharp-chat/SharpChat.SockChat/PacketsS2C/ForceDisconnectS2CPacket.cs

using System;

namespace SharpChat.SockChat.PacketsS2C {
    public class ForceDisconnectS2CPacket : ISockChatS2CPacket {
        private readonly long Expires;

        public ForceDisconnectS2CPacket(DateTimeOffset expires) {
            Expires = expires <= DateTimeOffset.UtcNow
                ? 0 : (expires.Year >= 2100 ? -1 : expires.ToUnixTimeSeconds());
        }

        public string Pack() {
            if(Expires != 0)
                return string.Format("9\t1\t{0}", Expires);

            return "9\t0";
        }
    }
}