public void ProcessTransfer(AMQPData data, long?handle, bool?settled, long?_deliveryId)
{
QOS qos = QOS.AT_LEAST_ONCE;
if (settled.HasValue && settled.Value)
{
qos = QOS.AT_MOST_ONCE;
}
else
{
AMQPDisposition disposition = new AMQPDisposition();
disposition.Channel = _channel;
disposition.Role = RoleCodes.RECEIVER;
disposition.First = _deliveryId.Value;
disposition.Last = _deliveryId.Value;
disposition.Settled = true;
disposition.State = new AMQPAccepted();
_client.Send(disposition);
}
String topicName = null;
if (!handle.HasValue || !_usedMappings.ContainsKey(handle.Value))
{
return;
}
topicName = _usedMappings[handle.Value];
_dbInterface.StoreMessage(topicName, data.Data, qos);
if (_listener != null)
{
_listener.MessageReceived(MessageType.PUBLISH);
}
}
private void addTopicButton_Click(object sender, EventArgs e)
{
if (txtNewTopicName.Text.Length == 0)
{
MessageBox.Show("Topic is required");
return;
}
if (cmbNewTopicQOS.SelectedIndex == -1)
{
MessageBox.Show("Please choose QOS");
return;
}
QOS topicQOS = QOS.AT_MOST_ONCE;
switch (cmbNewTopicQOS.SelectedIndex)
{
case 1:
topicQOS = QOS.AT_LEAST_ONCE;
break;
case 2:
topicQOS = QOS.EXACTLY_ONCE;
break;
}
mqtt.avps.Topic[] topics = new mqtt.avps.Topic[] { new mqtt.avps.Topic(txtNewTopicName.Text, topicQOS) };
txtNewTopicName.Text = String.Empty;
cmbNewTopicQOS.SelectedIndex = -1;
MessageBox.Show("Topic Request Sent", "Adding new topic request sent to server", MessageBoxButtons.OK, MessageBoxIcon.Information);
_client.Subscribe(topics);
}
public void StoreTopic(string topicName, QOS qos)
{
MQTTModel model = new MQTTModel();
var topics = from t in model.Topics where t.TopicName == topicName where t.Account.ID == defaultAccount.ID select t;
if (topics.Count() > 0)
{
Topic currTopic = topics.First();
currTopic.QOS = qos;
model.Topics.Attach(currTopic);
var entry = model.Entry(currTopic);
entry.Property(t => t.QOS).IsModified = true;
model.SaveChanges();
}
else
{
Topic newTopic = new Topic();
newTopic.QOS = qos;
newTopic.TopicName = topicName;
newTopic.Account = defaultAccount;
model.Accounts.Attach(defaultAccount);
model.Topics.Add(newTopic);
model.Entry(defaultAccount).State = EntityState.Unchanged;
model.SaveChanges();
}
}
public void ProcessSuback(Int32 packetID, List <SubackCode> codes)
{
MQMessage message = _timers.Remove(packetID);
foreach (SubackCode code in codes)
{
if (code == SubackCode.FAILURE)
{
throw new CoreLogicException("received invalid message suback");
}
else
{
Subscribe subscribe = (Subscribe)message;
Topic topic = subscribe.Topics[0];
QOS expectedQos = topic.Qos;
QOS actualQos = (QOS)((int)code);
if (expectedQos == actualQos)
{
_dbInterface.StoreTopic(topic.Name, expectedQos);
}
else
{
_dbInterface.StoreTopic(topic.Name, actualQos);
}
if (_listener != null)
{
_listener.MessageReceived(MessageType.SUBACK);
}
}
}
}
public void ProcessPublish(Int32?packetID, Topic topic, byte[] content, Boolean retain, Boolean isDup)
{
QOS publisherQos = topic.Qos;
switch (publisherQos)
{
case QOS.AT_LEAST_ONCE:
Puback puback = new Puback(packetID.Value);
_client.Send(puback);
break;
case QOS.EXACTLY_ONCE:
Pubrec pubrec = new Pubrec(packetID.Value);
_client.Send(pubrec);
break;
default:
break;
}
String topicName = topic.Name;
if (!(isDup && publisherQos == QOS.EXACTLY_ONCE))
{
_dbInterface.StoreMessage(topicName, content, publisherQos);
}
if (_listener != null)
{
_listener.MessageReceived(MessageType.PUBLISH);
}
}
public void ProcessPublish(Int32?packetID, SNTopic topic, Byte[] content, Boolean retain, Boolean isDup)
{
SNQoS publisherQos = topic.getQos();
QOS realQos = QOS.AT_MOST_ONCE;
switch (publisherQos)
{
case SNQoS.AT_LEAST_ONCE:
SNPuback puback = new SNPuback();
puback.MessageID = packetID;
puback.ReturnCode = ReturnCode.ACCEPTED;
int topicID = 0;
if (topic is IdentifierTopic)
{
topicID = ((IdentifierTopic)topic).Value;
}
else if (topic is ShortTopic)
{
topicID = Int32.Parse(((ShortTopic)topic).Value);
}
puback.topicID = topicID;
_client.Send(puback);
realQos = QOS.AT_LEAST_ONCE;
break;
case SNQoS.EXACTLY_ONCE:
realQos = QOS.EXACTLY_ONCE;
SNPubrec pubrec = new SNPubrec(packetID.Value);
_client.Send(pubrec);
break;
default:
break;
}
String topicName = String.Empty;
if (topic is IdentifierTopic && mappedTopics.ContainsKey(((IdentifierTopic)topic).Value))
{
topicName = mappedTopics[((IdentifierTopic)topic).Value];
}
if (topicName.Length == 0)
{
return;
}
if (!(isDup && publisherQos == SNQoS.EXACTLY_ONCE))
{
_dbInterface.StoreMessage(topicName, content, realQos);
}
if (_listener != null)
{
_listener.MessageReceived(MessageType.PUBLISH);
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="topic">Message topic</param>
/// <param name="message">Message data</param>
/// <param name="dupFlag">Duplicate delivery flag</param>
/// <param name="qosLevel">Quality of Service level</param>
/// <param name="retain">Retain flag</param>
public MqttMsgPublishEventArgs(string topic,
byte[] message,
bool dupFlag,
QOS qosLevel,
bool retain)
{
Topic = topic;
Message = message;
DupFlag = dupFlag;
QosLevel = qosLevel;
Retain = retain;
}
public void From_XML(System.Xml.Linq.XElement xml)
{
Reset();
if (xml == null)
{
return;
}
var element = xml.Name == "network" ? xml : null;
if (element == null)
{
return;
}
var attr = element.Attribute("ipv6");
if (attr != null)
{
ipv6 = attr.Value.ToLower() == "yes";
}
var ele = element.Element("name");
if (ele != null)
{
name = ele.Value;
}
ele = element.Element("mac");
if (ele != null)
{
attr = ele.Attribute("name");
if (attr != null)
{
mac = attr.Value;
}
}
ele = element.Element("uuid");
if (ele != null)
{
uuid = ele.Value;
}
ele = element.Element("forward");
if (ele != null)
{
attr = ele.Attribute("mode");
if (attr != null)
{
Forward_Type = (Forward_Types)Enum.Parse(typeof(Forward_Types), attr.Value);
}
}
Bridge.From_XML(element.Element("bridge"));
QOS.From_XML(element.Element("bandwidth"));
Configuration.From_XML(element.Element("ip"));
}
public static byte ToByte(this QOS value)
{
switch (value)
{
case QOS.QOS0: return(0);
case QOS.QOS1: return(1);
case QOS.QOS2: return(2);
}
throw new Exception("Unexpected QOS value");
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="topic">Message topic</param>
/// <param name="message">Message data</param>
/// <param name="dupFlag">Duplicate flag</param>
/// <param name="qosLevel">Quality of Service level</param>
/// <param name="retain">Retain flag</param>
public MqttMsgPublish(string topic,
byte[] message,
bool dupFlag,
QOS qosLevel,
bool retain) : base()
{
this._type = MQTT_MSG_PUBLISH_TYPE;
this.topic = topic;
this.message = message;
this._dupFlag = dupFlag;
this._qosLevel = qosLevel;
this._retainFlag = retain;
this._messageId = 0;
}
public void ProcessSuback(Int32 packetID, Int32 topicID, ReturnCode returnCode, SNQoS allowedQos)
{
SNMessage message = _timers.Remove(packetID);
if (returnCode != ReturnCode.ACCEPTED)
{
throw new CoreLogicException("received invalid message suback");
}
else
{
SNSubscribe subscribe = (SNSubscribe)message;
String topicName = String.Empty;
if (subscribe.SnTopic is IdentifierTopic)
{
topicName = mappedTopics[((IdentifierTopic)subscribe.SnTopic).Value];
}
else
{
topicName = ((FullTopic)subscribe.SnTopic).Value;
}
SNQoS actualQos = allowedQos;
QOS realQos = QOS.AT_LEAST_ONCE;
switch (actualQos)
{
case SNQoS.AT_MOST_ONCE:
realQos = QOS.AT_MOST_ONCE;
break;
case SNQoS.EXACTLY_ONCE:
realQos = QOS.EXACTLY_ONCE;
break;
case SNQoS.LEVEL_ONE:
realQos = QOS.AT_MOST_ONCE;
break;
}
_dbInterface.StoreTopic(topicName, realQos);
if (_listener != null)
{
_listener.MessageReceived(MessageType.SUBACK);
}
}
}
public void StoreMessage(string topicName, byte[] content, QOS qos)
{
Message newMessage = new Message();
newMessage.QOS = qos;
newMessage.Content = content;
newMessage.TopicName = topicName;
newMessage.Incoming = true;
newMessage.Account = defaultAccount;
MQTTModel model = new MQTTModel();
model.Accounts.Attach(defaultAccount);
model.Messages.Add(newMessage);
model.Entry(defaultAccount).State = EntityState.Unchanged;
model.SaveChanges();
}
public string To_XML()
{
var ret = "<network ipv6='" + (ipv6 ? "yes" : "no") + "' >";
ret += "<name>" + name + "</name>";
if (!string.IsNullOrWhiteSpace(mac))
{
ret += "<mac name='" + mac + "'/>";
}
if (!string.IsNullOrWhiteSpace(uuid))
{
ret += "<uuid>" + uuid + "</uuid>";
}
ret += "<forward mode ='" + Forward_Type.ToString() + "' />";
ret += Bridge.To_XML();
ret += QOS.To_XML();
ret += Configuration.To_XML();
ret += "</network>";
return(ret);
}
public Topic(String name, QOS qos)
{
this._name = name;
this._qos = qos;
}
/// <exception cref="MalformedMessageException">Exception is thrown in case of invalid packet format</exception>
public static MQMessage Decode(IByteBuffer buf)
{
MQMessage header = null;
byte fixedHeader = buf.ReadByte();
LengthDetails length = DecodeLength(buf);
MessageType type = (MessageType)((fixedHeader >> 4) & 0xf);
switch (type)
{
case MessageType.CONNECT:
Byte[] nameValue = new byte[buf.ReadUnsignedShort()];
buf.ReadBytes(nameValue, 0, nameValue.Length);
String name = Encoding.UTF8.GetString(nameValue);
if (!name.Equals(Connect.PROTOCOL_NAME))
{
throw new MalformedMessageException("CONNECT, protocol-name set to " + name);
}
Byte protocolLevel = buf.ReadByte();
Byte contentFlags = buf.ReadByte();
Boolean userNameFlag = (((contentFlags >> 7) & 1) == 1) ? true : false;
Boolean userPassFlag = (((contentFlags >> 6) & 1) == 1) ? true : false;
Boolean willRetain = (((contentFlags >> 5) & 1) == 1) ? true : false;
Int32 QOSValue = ((contentFlags & 0x1f) >> 3) & 3;
QOS willQos = (QOS)QOSValue;
if (!Enum.IsDefined(typeof(QOS), QOSValue))
{
throw new MalformedMessageException("CONNECT, will QoS set to " + willQos);
}
Boolean willFlag = (((contentFlags >> 2) & 1) == 1) ? true : false;
if (willQos != QOS.AT_MOST_ONCE && !willFlag)
{
throw new MalformedMessageException("CONNECT, will QoS set to " + willQos + ", willFlag not set");
}
if (willRetain && !willFlag)
{
throw new MalformedMessageException("CONNECT, will retain set, willFlag not set");
}
Boolean cleanSession = (((contentFlags >> 1) & 1) == 1) ? true : false;
Boolean reservedFlag = ((contentFlags & 1) == 1) ? true : false;
if (reservedFlag)
{
throw new MalformedMessageException("CONNECT, reserved flag set to true");
}
int keepalive = buf.ReadUnsignedShort();
Byte[] clientIdValue = new byte[buf.ReadUnsignedShort()];
buf.ReadBytes(clientIdValue, 0, clientIdValue.Length);
String clientID = Encoding.UTF8.GetString(clientIdValue);
if (!StringVerifier.verify(clientID))
{
throw new MalformedMessageException("ClientID contains restricted characters: U+0000, U+D000-U+DFFF");
}
String willTopic = null;
Byte[] willMessage = null;
String username = null;
String password = null;
Will will = null;
if (willFlag)
{
if (buf.ReadableBytes < 2)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
byte[] willTopicValue = new byte[buf.ReadUnsignedShort()];
if (buf.ReadableBytes < willTopicValue.Length)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
buf.ReadBytes(willTopicValue, 0, willTopicValue.Length);
willTopic = Encoding.UTF8.GetString(willTopicValue);
if (!StringVerifier.verify(willTopic))
{
throw new MalformedMessageException("WillTopic contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
if (buf.ReadableBytes < 2)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
willMessage = new byte[buf.ReadUnsignedShort()];
if (buf.ReadableBytes < willMessage.Length)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
buf.ReadBytes(willMessage, 0, willMessage.Length);
if (willTopic.Length == 0)
{
throw new MalformedMessageException("invalid will encoding");
}
will = new Will(new Topic(willTopic, willQos), willMessage, willRetain);
if (!will.IsValid())
{
throw new MalformedMessageException("invalid will encoding");
}
}
if (userNameFlag)
{
if (buf.ReadableBytes < 2)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
byte[] userNameValue = new byte[buf.ReadUnsignedShort()];
if (buf.ReadableBytes < userNameValue.Length)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
buf.ReadBytes(userNameValue, 0, userNameValue.Length);
username = Encoding.UTF8.GetString(userNameValue);
if (!StringVerifier.verify(username))
{
throw new MalformedMessageException("Username contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
}
if (userPassFlag)
{
if (buf.ReadableBytes < 2)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
byte[] userPassValue = new byte[buf.ReadUnsignedShort()];
if (buf.ReadableBytes < userPassValue.Length)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
buf.ReadBytes(userPassValue, 0, userPassValue.Length);
password = Encoding.UTF8.GetString(userPassValue);
if (!StringVerifier.verify(password))
{
throw new MalformedMessageException("Password contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
}
if (buf.ReadableBytes > 0)
{
throw new MalformedMessageException("Invalid encoding will/username/password");
}
Connect connect = new Connect(username, password, clientID, cleanSession, keepalive, will);
if (protocolLevel != 4)
{
connect.ProtocolLevel = protocolLevel;
}
header = connect;
break;
case MessageType.CONNACK:
byte sessionPresentValue = buf.ReadByte();
if (sessionPresentValue != 0 && sessionPresentValue != 1)
{
throw new MalformedMessageException("CONNACK, session-present set to " + (sessionPresentValue & 0xff));
}
Boolean isPresent = sessionPresentValue == 1 ? true : false;
Int32 connackByte = ((Int32)buf.ReadByte()) & 0xFF;
ConnackCode connackCode = (ConnackCode)connackByte;
if (!Enum.IsDefined(typeof(ConnackCode), connackByte))
{
throw new MalformedMessageException("Invalid connack code: " + connackByte);
}
header = new Connack(isPresent, connackCode);
break;
case MessageType.PUBLISH:
int dataLength = length.Length;
fixedHeader &= 0xf;
Boolean dup = (((fixedHeader >> 3) & 1) == 1) ? true : false;
QOSValue = (fixedHeader & 0x07) >> 1;
QOS qos = (QOS)QOSValue;
if (!Enum.IsDefined(typeof(QOS), (byte)QOSValue))
{
throw new MalformedMessageException("invalid QoS value");
}
if (dup && qos == QOS.AT_MOST_ONCE)
{
throw new MalformedMessageException("PUBLISH, QoS-0 dup flag present");
}
Boolean retain = ((fixedHeader & 1) == 1) ? true : false;
byte[] topicNameValue = new byte[buf.ReadUnsignedShort()];
buf.ReadBytes(topicNameValue, 0, topicNameValue.Length);
String topicName = Encoding.UTF8.GetString(topicNameValue);
if (!StringVerifier.verify(topicName))
{
throw new MalformedMessageException("Publish-topic contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
dataLength -= topicName.Length + 2;
Int32?packetID = null;
if (qos != QOS.AT_MOST_ONCE)
{
packetID = buf.ReadUnsignedShort();
if (packetID < 0 || packetID > 65535)
{
throw new MalformedMessageException("Invalid PUBLISH packetID encoding");
}
dataLength -= 2;
}
byte[] data = new byte[dataLength];
if (dataLength > 0)
{
buf.ReadBytes(data, 0, data.Length);
}
header = new Publish(packetID, new Topic(topicName, qos), data, retain, dup);
break;
case MessageType.PUBACK:
header = new Puback(buf.ReadUnsignedShort());
break;
case MessageType.PUBREC:
header = new Pubrec(buf.ReadUnsignedShort());
break;
case MessageType.PUBREL:
header = new Pubrel(buf.ReadUnsignedShort());
break;
case MessageType.PUBCOMP:
header = new Pubcomp(buf.ReadUnsignedShort());
break;
case MessageType.SUBSCRIBE:
Int32 subID = buf.ReadUnsignedShort();
List <Topic> subscriptions = new List <Topic>();
while (buf.IsReadable())
{
byte[] value = new byte[buf.ReadUnsignedShort()];
buf.ReadBytes(value, 0, value.Length);
QOSValue = buf.ReadByte();
QOS requestedQos = (QOS)QOSValue;
if (!Enum.IsDefined(typeof(QOS), QOSValue))
{
throw new MalformedMessageException("Subscribe qos must be in range from 0 to 2: " + requestedQos);
}
String topic = Encoding.UTF8.GetString(value);
if (!StringVerifier.verify(topic))
{
throw new MalformedMessageException("Subscribe topic contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
Topic subscription = new Topic(topic, requestedQos);
subscriptions.Add(subscription);
}
if (subscriptions.Count == 0)
{
throw new MalformedMessageException("Subscribe with 0 topics");
}
header = new Subscribe(subID, subscriptions.ToArray());
break;
case MessageType.SUBACK:
Int32 subackID = buf.ReadUnsignedShort();
List <SubackCode> subackCodes = new List <SubackCode>();
while (buf.IsReadable())
{
Int32 subackByte = ((Int32)buf.ReadByte()) & 0xFF;
SubackCode subackCode = (SubackCode)subackByte;
if (!Enum.IsDefined(typeof(SubackCode), subackByte))
{
throw new MalformedMessageException("Invalid suback code: " + subackByte);
}
subackCodes.Add(subackCode);
}
if (subackCodes.Count == 0)
{
throw new MalformedMessageException("Suback with 0 return-codes");
}
header = new Suback(subackID, subackCodes);
break;
case MessageType.UNSUBSCRIBE:
Int32 unsubID = buf.ReadUnsignedShort();
List <String> unsubscribeTopics = new List <String>();
while (buf.IsReadable())
{
byte[] value = new byte[buf.ReadUnsignedShort()];
buf.ReadBytes(value, 0, value.Length);
String topic = Encoding.UTF8.GetString(value);
if (!StringVerifier.verify(topic))
{
throw new MalformedMessageException("Unsubscribe topic contains one or more restricted characters: U+0000, U+D000-U+DFFF");
}
unsubscribeTopics.Add(topic);
}
if (unsubscribeTopics.Count == 0)
{
throw new MalformedMessageException("Unsubscribe with 0 topics");
}
header = new Unsubscribe(unsubID, unsubscribeTopics.ToArray());
break;
case MessageType.UNSUBACK:
header = new Unsuback(buf.ReadUnsignedShort());
break;
case MessageType.PINGREQ:
header = new Pingreq();
break;
case MessageType.PINGRESP:
header = new Pingresp();
break;
case MessageType.DISCONNECT:
header = new Disconnect();
break;
default:
throw new MalformedMessageException("Invalid header type: " + type);
}
if (buf.IsReadable())
{
throw new MalformedMessageException("unexpected bytes in content");
}
if (length.Length != header.GetLength())
{
throw new MalformedMessageException("Invalid length. Encoded: " + length.Length + ", actual: " + header.GetLength());
}
return(header);
}
private void sendButton_Click(object sender, EventArgs e)
{
if (txtContent.Text.Length == 0)
{
MessageBox.Show("Content is required");
return;
}
if (txtTopic.Text.Length == 0)
{
MessageBox.Show("Topic is required");
return;
}
if (cmbQOS.SelectedIndex == -1)
{
MessageBox.Show("Please choose QOS");
return;
}
QOS messageQOS = QOS.AT_MOST_ONCE;
switch (cmbQOS.SelectedIndex)
{
case 1:
messageQOS = QOS.AT_LEAST_ONCE;
break;
case 2:
messageQOS = QOS.EXACTLY_ONCE;
break;
}
MQTTModel mqtt = new MQTTModel();
var accounts = from a in mqtt.Accounts where a.IsDefault == true select a;
dal.Message newMessage = new dal.Message();
newMessage.Content = Encoding.UTF8.GetBytes(txtContent.Text);
newMessage.Incoming = false;
newMessage.QOS = messageQOS;
newMessage.TopicName = txtTopic.Text;
newMessage.Account = accounts.First();
_client.Publish(new mqtt.avps.Topic(newMessage.TopicName, newMessage.QOS), newMessage.Content, chkRetain.Checked, chkDuplicate.Checked);
mqtt.Accounts.Attach(newMessage.Account);
mqtt.Messages.Add(newMessage);
mqtt.Entry(newMessage.Account).State = EntityState.Unchanged;
mqtt.SaveChanges();
txtContent.Text = String.Empty;
txtTopic.Text = String.Empty;
cmbQOS.SelectedIndex = -1;
chkDuplicate.Checked = false;
chkRetain.Checked = false;
MessageBox.Show("Message Sent Succesfully", "Message Sent", MessageBoxButtons.OK, MessageBoxIcon.Information);
List <dal.Message> messages = (from m in mqtt.Messages.Include("Account") where m.Account.ID == _account.ID orderby m.ID descending select m).ToList();
this.Invoke((MethodInvoker) delegate { this.messagesGrid.DataSource = messages; });
mqtt.Dispose();
}
public void PacketReceived(CoapMessage message)
{
CoapType type = message.CoapType;
if ((message.CoapCode == CoapCode.POST || message.CoapCode == CoapCode.PUT) && type != CoapType.ACKNOWLEDGEMENT)
{
String topic = null;
QOS qos = QOS.AT_MOST_ONCE;
foreach (CoapOption option in message.Options)
{
if (option.Number == (int)CoapOptionType.URI_PATH)
{
topic = Encoding.UTF8.GetString(option.Value);
}
else if (option.Number == (int)CoapOptionType.ACCEPT)
{
qos = (QOS)option.Value[option.Value.Length - 1];
}
}
if (topic == null)
{
List <CoapOption> options = new List <CoapOption>();
byte[] textBytes = Encoding.UTF8.GetBytes("text/plain");
options.Add(new CoapOption((int)CoapOptionType.CONTENT_FORMAT, textBytes.Length, textBytes));
byte[] nodeIdBytes = Encoding.UTF8.GetBytes(_clientID);
options.Add(new CoapOption((int)CoapOptionType.NODE_ID, nodeIdBytes.Length, nodeIdBytes));
CoapMessage ack = new CoapMessage(VERSION, CoapType.ACKNOWLEDGEMENT, CoapCode.BAD_OPTION, message.MessageID, message.Token, options, new byte[0]);
_client.Send(ack);
return;
}
byte[] content = message.Payload;
_dbInterface.StoreMessage(topic, content, 0);
if (_listener != null)
{
_listener.MessageReceived(MessageType.PUBLISH);
}
}
switch (type)
{
case CoapType.CONFIRMABLE:
{
List <CoapOption> options = new List <CoapOption>();
byte[] nodeIdBytes = Encoding.UTF8.GetBytes(_clientID);
options.Add(new CoapOption((int)CoapOptionType.NODE_ID, nodeIdBytes.Length, nodeIdBytes));
CoapMessage ack = new CoapMessage(message.Version, CoapType.ACKNOWLEDGEMENT, message.CoapCode, message.MessageID, message.Token, options, new byte[0]);
_client.Send(ack);
}
break;
case CoapType.NON_CONFIRMABLE:
{
_timers.Remove(message.Token);
}
break;
case CoapType.ACKNOWLEDGEMENT:
{
if (message.CoapCode == CoapCode.GET)
{
Boolean?observe = null;
QOS qos = QOS.AT_MOST_ONCE;
foreach (CoapOption option in message.Options)
{
if (option.Number == (int)CoapOptionType.OBSERVE && option.Value.Length > 0)
{
if (option.Value[option.Value.Length - 1] == 0x00)
{
observe = false;
}
else
{
observe = true;
}
}
else if (option.Number == (int)CoapOptionType.ACCEPT)
{
if (option.Value[option.Value.Length - 1] == 0)
{
qos = QOS.AT_LEAST_ONCE;
}
}
}
if (observe.HasValue)
{
if (!observe.Value)
{
CoapMessage originalMessage = _timers.Remove(message.Token);
if (originalMessage != null)
{
List <String> topics = new List <String>();
foreach (CoapOption option in originalMessage.Options)
{
if (option.Number == (int)CoapOptionType.URI_PATH)
{
topics.Add(Encoding.UTF8.GetString(option.Value));
}
}
for (int i = 0; i < topics.Count; i++)
{
_dbInterface.StoreTopic(topics[i], qos);
}
if (_listener != null)
{
_listener.MessageReceived(MessageType.SUBACK);
}
}
}
else
{
CoapMessage originalMessage = _timers.Remove(message.Token);
if (originalMessage != null)
{
List <String> topics = new List <String>();
foreach (CoapOption option in originalMessage.Options)
{
if (option.Number == (int)CoapOptionType.URI_PATH)
{
topics.Add(Encoding.UTF8.GetString(option.Value));
}
}
for (int i = 0; i < topics.Count; i++)
{
_dbInterface.DeleteTopic(topics[i]);
}
}
if (_listener != null)
{
_listener.MessageReceived(MessageType.UNSUBACK);
}
}
}
}
else
{
_timers.Remove(message.Token);
if (_listener != null)
{
_listener.MessageReceived(MessageType.PUBACK);
}
}
}
break;
case CoapType.RESET:
{
_timers.Remove(message.Token);
}
break;
}
}
/*
* MPLS Packet contains some data in string format and
* a stack of labels
*/
public MPLSPacket(int[] label, string data, QOS qos = QOS.HIGH)
{
labels = new Stack <int>(label);
this.data = data;
this.qos = qos;
}
public Task <UInt16> PublishAsync(String topic, byte[] buffer, QOS qosLevel = QOS.QOS0, bool retainFlag = false)
{
return(_mqttClient.PublishAsync(topic, buffer, qosLevel, retainFlag));
}
public Task <UInt16> PublishAsync(String topic, String payload = "", QOS qosLevel = QOS.QOS0, bool retainFlag = false)
{
var buffer = String.IsNullOrEmpty(payload) ? new byte[0] : System.Text.UTF8Encoding.UTF8.GetBytes(payload);
return(PublishAsync(topic, buffer, qosLevel, retainFlag));
}
public Task <UInt16> PublishAsync <T>(String topic, T payload, QOS qosLevel = QOS.QOS0, bool retainFlag = false)
{
var json = JsonConvert.SerializeObject(payload);
return(PublishAsync(topic, json, qosLevel));
}
