MQTTnet/Source/MQTTnet.Server/Internal/Formatter/MqttUnsubAckPacketFactory.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using MQTTnet.Packets;

namespace MQTTnet.Server.Internal.Formatter
{
    public static class MqttUnsubAckPacketFactory
    {
        public static MqttUnsubAckPacket Create(MqttUnsubscribePacket unsubscribePacket, UnsubscribeResult unsubscribeResult)
        {
            ArgumentNullException.ThrowIfNull(unsubscribePacket);
            ArgumentNullException.ThrowIfNull(unsubscribeResult);

            var unsubAckPacket = new MqttUnsubAckPacket
            {
                PacketIdentifier = unsubscribePacket.PacketIdentifier
            };

            // MQTTv5.0.0 only.
            unsubAckPacket.ReasonCodes = unsubscribeResult.ReasonCodes;

            return unsubAckPacket;
        }
    }
}