sharp-chat/SharpChat/Packet/UserChannelLeavePacket.cs

using System;

namespace SharpChat.Packet {
    public class UserChannelLeavePacket : ServerPacket {
        public ChatUser User { get; private set; }

        public UserChannelLeavePacket(ChatUser user) {
            User = user ?? throw new ArgumentNullException(nameof(user));
        }

        public override string Pack() {
            return string.Format("5\t1\t{0}\t{1}", User.UserId, SequenceId);
        }
    }
}