private static Task SerializeAsync(MqttConnAckPacket packet, IMqttCommunicationChannel destination)
{
using (var output = new MqttPacketWriter())
{
var connectAcknowledgeFlags = new ByteWriter();
connectAcknowledgeFlags.Write(packet.IsSessionPresent);
output.Write(connectAcknowledgeFlags);
output.Write((byte)packet.ConnectReturnCode);
output.InjectFixedHeader(MqttControlPacketType.ConnAck);
return(output.WriteToAsync(destination));
}
}
private Task SerializeAsync(MqttUnsubscribePacket packet, IMqttCommunicationChannel destination)
{
using (var output = new MqttPacketWriter())
{
output.Write(packet.PacketIdentifier);
if (packet.TopicFilters?.Any() == true)
{
foreach (var topicFilter in packet.TopicFilters)
{
output.WriteWithLengthPrefix(topicFilter);
}
}
output.InjectFixedHeader(MqttControlPacketType.Unsubscibe, 0x02);
return(output.WriteToAsync(destination));
}
}
private Task SerializeAsync(MqttSubAckPacket packet, IMqttCommunicationChannel destination)
{
using (var output = new MqttPacketWriter())
{
output.Write(packet.PacketIdentifier);
if (packet.SubscribeReturnCodes?.Any() == true)
{
foreach (var packetSubscribeReturnCode in packet.SubscribeReturnCodes)
{
output.Write((byte)packetSubscribeReturnCode);
}
}
output.InjectFixedHeader(MqttControlPacketType.SubAck);
return(output.WriteToAsync(destination));
}
}
private Task SerializeAsync(MqttSubscribePacket packet, IMqttCommunicationChannel destination)
{
using (var output = new MqttPacketWriter())
{
output.Write(packet.PacketIdentifier);
if (packet.TopicFilters?.Count > 0)
{
foreach (var topicFilter in packet.TopicFilters)
{
output.WriteWithLengthPrefix(topicFilter.Topic);
output.Write((byte)topicFilter.QualityOfServiceLevel);
}
}
output.InjectFixedHeader(MqttControlPacketType.Subscribe, 0x02);
return(output.WriteToAsync(destination));
}
}
