private static byte EncodeUnsubAckPacket(MqttUnsubAckPacket packet, IMqttPacketWriter packetWriter)
{
if (packet.ReasonCodes?.Any() != true)
{
throw new MqttProtocolViolationException("At least one reason code must be set[MQTT - 3.8.3 - 3].");
}
ThrowIfPacketIdentifierIsInvalid(packet);
packetWriter.Write(packet.PacketIdentifier.Value);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
propertiesWriter.WriteTo(packetWriter);
foreach (var reasonCode in packet.ReasonCodes)
{
packetWriter.Write((byte)reasonCode);
}
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.UnsubAck));
}
private static byte EncodePubCompPacket(MqttPubCompPacket packet, IMqttPacketWriter packetWriter)
{
ThrowIfPacketIdentifierIsInvalid(packet);
if (!packet.ReasonCode.HasValue)
{
ThrowReasonCodeNotSetException();
}
packetWriter.Write(packet.PacketIdentifier.Value);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
if (propertiesWriter.Length > 0 || packet.ReasonCode.Value != MqttPubCompReasonCode.Success)
{
packetWriter.Write((byte)packet.ReasonCode.Value);
propertiesWriter.WriteTo(packetWriter);
}
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.PubComp));
}
private static byte EncodeConnAckPacket(MqttConnAckPacket packet, IMqttPacketWriter packetWriter)
{
if (packet == null)
{
throw new ArgumentNullException(nameof(packet));
}
if (packetWriter == null)
{
throw new ArgumentNullException(nameof(packetWriter));
}
if (!packet.ReasonCode.HasValue)
{
ThrowReasonCodeNotSetException();
}
byte connectAcknowledgeFlags = 0x0;
if (packet.IsSessionPresent)
{
connectAcknowledgeFlags |= 0x1;
}
packetWriter.Write(connectAcknowledgeFlags);
packetWriter.Write((byte)packet.ReasonCode.Value);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteSessionExpiryInterval(packet.Properties.SessionExpiryInterval);
propertiesWriter.WriteAuthenticationMethod(packet.Properties.AuthenticationMethod);
propertiesWriter.WriteAuthenticationData(packet.Properties.AuthenticationData);
propertiesWriter.WriteRetainAvailable(packet.Properties.RetainAvailable);
propertiesWriter.WriteReceiveMaximum(packet.Properties.ReceiveMaximum);
propertiesWriter.WriteMaximumQoS(packet.Properties.MaximumQoS);
propertiesWriter.WriteAssignedClientIdentifier(packet.Properties.AssignedClientIdentifier);
propertiesWriter.WriteTopicAliasMaximum(packet.Properties.TopicAliasMaximum);
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteMaximumPacketSize(packet.Properties.MaximumPacketSize);
propertiesWriter.WriteWildcardSubscriptionAvailable(packet.Properties.WildcardSubscriptionAvailable);
propertiesWriter.WriteSubscriptionIdentifiersAvailable(packet.Properties.SubscriptionIdentifiersAvailable);
propertiesWriter.WriteSharedSubscriptionAvailable(packet.Properties.SharedSubscriptionAvailable);
propertiesWriter.WriteServerKeepAlive(packet.Properties.ServerKeepAlive);
propertiesWriter.WriteResponseInformation(packet.Properties.ResponseInformation);
propertiesWriter.WriteServerReference(packet.Properties.ServerReference);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
propertiesWriter.WriteTo(packetWriter);
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.ConnAck));
}
private static byte EncodeAuthPacket(MqttAuthPacket packet, IMqttPacketWriter packetWriter)
{
packetWriter.Write((byte)packet.ReasonCode);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteAuthenticationMethod(packet.Properties.AuthenticationMethod);
propertiesWriter.WriteAuthenticationData(packet.Properties.AuthenticationData);
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
propertiesWriter.WriteTo(packetWriter);
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.Auth));
}
private static byte EncodePubAckPacket(MqttPubAckPacket packet, IMqttPacketWriter packetWriter)
{
if (packet == null)
{
throw new ArgumentNullException(nameof(packet));
}
if (packetWriter == null)
{
throw new ArgumentNullException(nameof(packetWriter));
}
if (!packet.PacketIdentifier.HasValue)
{
throw new MqttProtocolViolationException("PubAck packet has no packet identifier.");
}
if (!packet.ReasonCode.HasValue)
{
throw new MqttProtocolViolationException("PubAck packet must contain a reason code.");
}
packetWriter.Write(packet.PacketIdentifier.Value);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
if (packetWriter.Length > 0 || packet.ReasonCode.Value != MqttPubAckReasonCode.Success)
{
packetWriter.Write((byte)packet.ReasonCode.Value);
propertiesWriter.WriteTo(packetWriter);
}
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.PubAck));
}
private static byte EncodeDisconnectPacket(MqttDisconnectPacket packet, IMqttPacketWriter packetWriter)
{
if (!packet.ReasonCode.HasValue)
{
ThrowReasonCodeNotSetException();
}
packetWriter.Write((byte)packet.ReasonCode.Value);
var propertiesWriter = new MqttV500PropertiesWriter();
if (packet.Properties != null)
{
propertiesWriter.WriteServerReference(packet.Properties.ServerReference);
propertiesWriter.WriteReasonString(packet.Properties.ReasonString);
propertiesWriter.WriteSessionExpiryInterval(packet.Properties.SessionExpiryInterval);
propertiesWriter.WriteUserProperties(packet.Properties.UserProperties);
}
propertiesWriter.WriteTo(packetWriter);
return(MqttPacketWriter.BuildFixedHeader(MqttControlPacketType.Disconnect));
}