private static MqttBasePacket DecodeUnsubscribePacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttUnsubscribePacket { PacketIdentifier = body.ReadTwoByteInteger(), Properties = new MqttUnsubscribePacketProperties() }; var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttUnsubscribePacket)); } } while (!body.EndOfStream) { packet.TopicFilters.Add(body.ReadStringWithLengthPrefix()); } return(packet); }
private static MqttBasePacket DecodeSubscribePacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttSubscribePacket { PacketIdentifier = body.ReadTwoByteInteger(), Properties = new MqttSubscribePacketProperties() }; var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.SubscriptionIdentifier) { packet.Properties.SubscriptionIdentifier = propertiesReader.ReadSubscriptionIdentifier(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttSubscribePacket)); } } while (!body.EndOfStream) { var topic = body.ReadStringWithLengthPrefix(); var options = body.ReadByte(); var qos = (MqttQualityOfServiceLevel)(options & 3); var noLocal = (options & (1 << 2)) > 0; var retainAsPublished = (options & (1 << 3)) > 0; var retainHandling = (MqttRetainHandling)((options >> 4) & 3); packet.TopicFilters.Add(new TopicFilter { Topic = topic, QualityOfServiceLevel = qos, NoLocal = noLocal, RetainAsPublished = retainAsPublished, RetainHandling = retainHandling }); } return(packet); }
private static MqttBasePacket DecodeAuthPacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttAuthPacket { Properties = new MqttAuthPacketProperties() }; if (body.EndOfStream) { packet.ReasonCode = MqttAuthenticateReasonCode.Success; return(packet); } packet.ReasonCode = (MqttAuthenticateReasonCode)body.ReadByte(); var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationMethod) { packet.Properties.AuthenticationMethod = propertiesReader.ReadAuthenticationMethod(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationData) { packet.Properties.AuthenticationData = propertiesReader.ReadAuthenticationData(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReasonString) { packet.Properties.ReasonString = propertiesReader.ReadReasonString(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttAuthPacket)); } } return(packet); }
private static MqttBasePacket DecodePubCompPacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttPubCompPacket { PacketIdentifier = body.ReadTwoByteInteger(), Properties = new MqttPubCompPacketProperties() }; if (body.EndOfStream) { packet.ReasonCode = MqttPubCompReasonCode.Success; return(packet); } packet.ReasonCode = (MqttPubCompReasonCode)body.ReadByte(); var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReasonString) { packet.Properties.ReasonString = propertiesReader.ReadReasonString(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttPubCompPacket)); } } return(packet); }
private static MqttBasePacket DecodeDisconnectPacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttDisconnectPacket { ReasonCode = (MqttDisconnectReasonCode)body.ReadByte(), Properties = new MqttDisconnectPacketProperties() }; var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.SessionExpiryInterval) { packet.Properties.SessionExpiryInterval = propertiesReader.ReadSessionExpiryInterval(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReasonString) { packet.Properties.ReasonString = propertiesReader.ReadReasonString(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ServerReference) { packet.Properties.ServerReference = propertiesReader.ReadServerReference(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttDisconnectPacket)); } } return(packet); }
private static MqttBasePacket DecodeConnectPacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var packet = new MqttConnectPacket { Properties = new MqttConnectPacketProperties() }; var protocolName = body.ReadStringWithLengthPrefix(); var protocolVersion = body.ReadByte(); if (protocolName != "MQTT" && protocolVersion != 5) { throw new MqttProtocolViolationException("MQTT protocol name and version do not match MQTT v5."); } var connectFlags = body.ReadByte(); var cleanSessionFlag = (connectFlags & 0x02) > 0; var willMessageFlag = (connectFlags & 0x04) > 0; var willMessageQoS = (byte)(connectFlags >> 3 & 3); var willMessageRetainFlag = (connectFlags & 0x20) > 0; var passwordFlag = (connectFlags & 0x40) > 0; var usernameFlag = (connectFlags & 0x80) > 0; packet.CleanSession = cleanSessionFlag; if (willMessageFlag) { packet.WillMessage = new MqttApplicationMessage { QualityOfServiceLevel = (MqttQualityOfServiceLevel)willMessageQoS, Retain = willMessageRetainFlag }; } packet.KeepAlivePeriod = body.ReadTwoByteInteger(); var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.SessionExpiryInterval) { packet.Properties.SessionExpiryInterval = propertiesReader.ReadSessionExpiryInterval(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationMethod) { packet.Properties.AuthenticationMethod = propertiesReader.ReadAuthenticationMethod(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.WillDelayInterval) { packet.Properties.WillDelayInterval = propertiesReader.ReadWillDelayInterval(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationData) { packet.Properties.AuthenticationData = propertiesReader.ReadAuthenticationData(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReceiveMaximum) { packet.Properties.ReceiveMaximum = propertiesReader.ReadReceiveMaximum(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.TopicAliasMaximum) { packet.Properties.TopicAliasMaximum = propertiesReader.ReadTopicAliasMaximum(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.MaximumPacketSize) { packet.Properties.MaximumPacketSize = propertiesReader.ReadMaximumPacketSize(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.RequestResponseInformation) { packet.Properties.RequestResponseInformation = propertiesReader.RequestResponseInformation(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.RequestProblemInformation) { packet.Properties.RequestProblemInformation = propertiesReader.RequestProblemInformation(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttConnAckPacket)); } } packet.ClientId = body.ReadStringWithLengthPrefix(); if (packet.WillMessage != null) { packet.WillMessage.Topic = body.ReadStringWithLengthPrefix(); packet.WillMessage.Payload = body.ReadWithLengthPrefix(); } if (usernameFlag) { packet.Username = body.ReadStringWithLengthPrefix(); } if (passwordFlag) { packet.Password = body.ReadStringWithLengthPrefix(); } return(packet); }
private static MqttBasePacket DecodePublishPacket(byte header, IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var retain = (header & 1) > 0; var qos = (MqttQualityOfServiceLevel)(header >> 1 & 3); var dup = (header >> 3 & 1) > 0; var packet = new MqttPublishPacket { Topic = body.ReadStringWithLengthPrefix(), Retain = retain, QualityOfServiceLevel = qos, Dup = dup, Properties = new MqttPublishPacketProperties() }; if (qos > 0) { packet.PacketIdentifier = body.ReadTwoByteInteger(); } var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.PayloadFormatIndicator) { packet.Properties.PayloadFormatIndicator = propertiesReader.ReadPayloadFormatIndicator(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.MessageExpiryInterval) { packet.Properties.MessageExpiryInterval = propertiesReader.ReadMessageExpiryInterval(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.TopicAlias) { packet.Properties.TopicAlias = propertiesReader.ReadTopicAlias(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ResponseTopic) { packet.Properties.ResponseTopic = propertiesReader.ReadResponseTopic(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.CorrelationData) { packet.Properties.CorrelationData = propertiesReader.ReadCorrelationData(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.SubscriptionIdentifier) { packet.Properties.SubscriptionIdentifier = propertiesReader.ReadSubscriptionIdentifier(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ContentType) { packet.Properties.ContentType = propertiesReader.ReadContentType(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttPublishPacket)); } } if (!body.EndOfStream) { packet.Payload = body.ReadRemainingData().ToArray(); } return(packet); }
private static MqttBasePacket DecodeConnAckPacket(IMqttPacketBodyReader body) { ThrowIfBodyIsEmpty(body); var acknowledgeFlags = body.ReadByte(); var packet = new MqttConnAckPacket { IsSessionPresent = (acknowledgeFlags & 0x1) > 0, ReasonCode = (MqttConnectReasonCode)body.ReadByte(), Properties = new MqttConnAckPacketProperties() }; var propertiesReader = new MqttV500PropertiesReader(body); while (propertiesReader.MoveNext()) { if (propertiesReader.CurrentPropertyId == MqttPropertyId.SessionExpiryInterval) { packet.Properties.SessionExpiryInterval = propertiesReader.ReadSessionExpiryInterval(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationMethod) { packet.Properties.AuthenticationMethod = propertiesReader.ReadAuthenticationMethod(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AuthenticationData) { packet.Properties.AuthenticationData = propertiesReader.ReadAuthenticationData(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.RetainAvailable) { packet.Properties.RetainAvailable = propertiesReader.ReadRetainAvailable(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReceiveMaximum) { packet.Properties.ReceiveMaximum = propertiesReader.ReadReceiveMaximum(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.AssignedClientIdentifer) { packet.Properties.AssignedClientIdentifier = propertiesReader.ReadAssignedClientIdentifier(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.TopicAliasMaximum) { packet.Properties.TopicAliasMaximum = propertiesReader.ReadTopicAliasMaximum(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ReasonString) { packet.Properties.ReasonString = propertiesReader.ReadReasonString(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.MaximumPacketSize) { packet.Properties.MaximumPacketSize = propertiesReader.ReadMaximumPacketSize(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.WildcardSubscriptionAvailable) { packet.Properties.WildcardSubscriptionAvailable = propertiesReader.ReadWildcardSubscriptionAvailable(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.SubscriptionIdentifiersAvailable) { packet.Properties.SubscriptionIdentifiersAvailable = propertiesReader.ReadSubscriptionIdentifiersAvailable(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.SharedSubscriptionAvailable) { packet.Properties.SharedSubscriptionAvailable = propertiesReader.ReadSharedSubscriptionAvailable(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ServerKeepAlive) { packet.Properties.ServerKeepAlive = propertiesReader.ReadServerKeepAlive(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ResponseInformation) { packet.Properties.ResponseInformation = propertiesReader.ReadResponseInformation(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.ServerReference) { packet.Properties.ServerReference = propertiesReader.ReadServerReference(); } else if (propertiesReader.CurrentPropertyId == MqttPropertyId.UserProperty) { propertiesReader.FillUserProperties(packet.Properties.UserProperties); } else { propertiesReader.ThrowInvalidPropertyIdException(typeof(MqttConnAckPacket)); } } return(packet); }