private static MqttBasePacket DeserializePublish(MqttPacketReader reader, MqttPacketHeader mqttPacketHeader)
{
var fixedHeader = new ByteReader(mqttPacketHeader.FixedHeader);
var retain = fixedHeader.Read();
var qualityOfServiceLevel = (MqttQualityOfServiceLevel)fixedHeader.Read(2);
var dup = fixedHeader.Read();
var topic = reader.ReadStringWithLengthPrefix();
ushort packetIdentifier = 0;
if (qualityOfServiceLevel > MqttQualityOfServiceLevel.AtMostOnce)
{
packetIdentifier = reader.ReadUInt16();
}
var packet = new MqttPublishPacket
{
Retain = retain,
QualityOfServiceLevel = qualityOfServiceLevel,
Dup = dup,
Topic = topic,
Payload = reader.ReadRemainingData(),
PacketIdentifier = packetIdentifier
};
return(packet);
}
private static MqttBasePacket Deserialize(MqttPacketHeader header, MqttPacketReader reader)
{
switch (header.ControlPacketType)
{
case MqttControlPacketType.Connect: return(DeserializeConnect(reader));
case MqttControlPacketType.ConnAck: return(DeserializeConnAck(reader));
case MqttControlPacketType.Disconnect: return(new MqttDisconnectPacket());
case MqttControlPacketType.Publish: return(DeserializePublish(reader, header));
case MqttControlPacketType.PubAck: return(DeserializePubAck(reader));
case MqttControlPacketType.PubRec: return(DeserializePubRec(reader));
case MqttControlPacketType.PubRel: return(DeserializePubRel(reader));
case MqttControlPacketType.PubComp: return(DeserializePubComp(reader));
case MqttControlPacketType.PingReq: return(new MqttPingReqPacket());
case MqttControlPacketType.PingResp: return(new MqttPingRespPacket());
case MqttControlPacketType.Subscribe: return(DeserializeSubscribe(reader));
case MqttControlPacketType.SubAck: return(DeserializeSubAck(reader));
case MqttControlPacketType.Unsubscibe: return(DeserializeUnsubscribe(reader));
case MqttControlPacketType.UnsubAck: return(DeserializeUnsubAck(reader));
default: throw new MqttProtocolViolationException($"Packet type ({(int)header.ControlPacketType}) not supported.");
}
}
public MqttBasePacket Deserialize(MqttPacketHeader header, MemoryStream body)
{
if (header == null)
{
throw new ArgumentNullException(nameof(header));
}
if (body == null)
{
throw new ArgumentNullException(nameof(body));
}
using (var reader = new MqttPacketReader(header, body))
{
return(Deserialize(header, reader));
}
}
private static MqttBasePacket Deserialize(MqttPacketHeader header, MqttPacketReader reader)
{
switch (header.ControlPacketType)
{
case MqttControlPacketType.Connect:
{
return(DeserializeConnect(reader));
}
case MqttControlPacketType.ConnAck:
{
return(DeserializeConnAck(reader));
}
case MqttControlPacketType.Disconnect:
{
return(new MqttDisconnectPacket());
}
case MqttControlPacketType.Publish:
{
return(DeserializePublish(reader, header));
}
case MqttControlPacketType.PubAck:
{
return(new MqttPubAckPacket
{
PacketIdentifier = reader.ReadUInt16()
});
}
case MqttControlPacketType.PubRec:
{
return(new MqttPubRecPacket
{
PacketIdentifier = reader.ReadUInt16()
});
}
case MqttControlPacketType.PubRel:
{
return(new MqttPubRelPacket
{
PacketIdentifier = reader.ReadUInt16()
});
}
case MqttControlPacketType.PubComp:
{
return(new MqttPubCompPacket
{
PacketIdentifier = reader.ReadUInt16()
});
}
case MqttControlPacketType.PingReq:
{
return(new MqttPingReqPacket());
}
case MqttControlPacketType.PingResp:
{
return(new MqttPingRespPacket());
}
case MqttControlPacketType.Subscribe:
{
return(DeserializeSubscribe(reader));
}
case MqttControlPacketType.SubAck:
{
return(DeserializeSubAck(reader));
}
case MqttControlPacketType.Unsubscibe:
{
return(DeserializeUnsubscribe(reader));
}
case MqttControlPacketType.UnsubAck:
{
return(new MqttUnsubAckPacket
{
PacketIdentifier = reader.ReadUInt16()
});
}
default:
{
throw new MqttProtocolViolationException($"Packet type ({(int)header.ControlPacketType}) not supported.");
}
}
}
public ReceivedMqttPacket(MqttPacketHeader header, byte[] body)
{
Header = header ?? throw new ArgumentNullException(nameof(header));
Body = body ?? throw new ArgumentNullException(nameof(body));
}
public MqttPacketReader(MqttPacketHeader header, Stream bodyStream)
: base(bodyStream, Encoding.UTF8, true)
{
_header = header;
}
