public void MultipleQos()
{
// Message Specs________________
// <90><03><00><02><00> <01><02>
var sampleMessage = new[]
{
(byte)0x90,
(byte)0x05,
(byte)0x00,
(byte)0x02,
(byte)0x00,
(byte)0x01,
(byte)0x02,
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttSubscribeAckMessage>(baseMessage);
MqttSubscribeAckMessage message = (MqttSubscribeAckMessage)baseMessage;
Assert.Equal <int>(3, message.Payload.QosGrants.Count);
Assert.Equal <MqttQos>(MqttQos.AtMostOnce, message.Payload.QosGrants[0]);
Assert.Equal <MqttQos>(MqttQos.AtLeastOnce, message.Payload.QosGrants[1]);
Assert.Equal <MqttQos>(MqttQos.ExactlyOnce, message.Payload.QosGrants[2]);
}
public void SingleTopic()
{
// Message Specs________________
// <A2><08><00><03><00><04>fred (Unsubscribe to topic fred)
var sampleMessage = new[]
{
(byte)0xA2,
(byte)0x08,
(byte)0x00,
(byte)0x03,
(byte)0x00,
(byte)0x04,
(byte)'f',
(byte)'r',
(byte)'e',
(byte)'d',
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttUnsubscribeMessage>(baseMessage);
MqttUnsubscribeMessage message = (MqttUnsubscribeMessage)baseMessage;
Assert.Equal <int>(1, message.Payload.Subscriptions.Count);
Assert.True(message.Payload.Subscriptions.Contains("fred"));
}
public void ValidPayload()
{
// Message Specs________________
// <40><02><00><04> (Pub Release for Message ID 4)
var sampleMessage = new[]
{
(byte)0x60,
(byte)0x02,
(byte)0x0,
(byte)0x4,
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttPublishReleaseMessage>(baseMessage);
MqttPublishReleaseMessage message = (MqttPublishReleaseMessage)baseMessage;
// validate the message deserialization
Assert.Equal <MqttMessageType>(MqttMessageType.PublishRelease, message.Header.MessageType);
Assert.Equal <int>(2, message.Header.MessageSize);
// make sure the publish message length matches the expectred size.
Assert.Equal <int>(4, message.VariableHeader.MessageIdentifier);
}
public void SingleTopic()
{
// Message Specs________________
// <82><09><00><02><00><04>fred<00> (subscribe to topic fred at qos 0)
var sampleMessage = new[]
{
(byte)0x82,
(byte)0x09,
(byte)0x00,
(byte)0x02,
(byte)0x00,
(byte)0x04,
(byte)'f',
(byte)'r',
(byte)'e',
(byte)'d',
(byte)0x00,
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttSubscribeMessage>(baseMessage);
MqttSubscribeMessage message = (MqttSubscribeMessage)baseMessage;
Assert.Equal <int>(1, message.Payload.Subscriptions.Count);
Assert.True(message.Payload.Subscriptions.ContainsKey("fred"));
Assert.Equal <MqttQos>(MqttQos.AtMostOnce, message.Payload.Subscriptions["fred"]);
}
public void UnacceptableProtocolVersion()
{
// Our test deserialization message, with the following properties. Note this message is not
// yet a real MQTT message, because not everything is implemented, but it must be modified
// and ammeneded as work progresses
//
// Message Specs________________
// <20><02><00><00>
var sampleMessage = new[]
{
(byte)0x20,
(byte)0x02,
(byte)0x0,
(byte)0x1,
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttConnectAckMessage>(baseMessage);
MqttConnectAckMessage message = (MqttConnectAckMessage)baseMessage;
// validate the message deserialization
Assert.Equal <bool>(false, message.Header.Duplicate);
Assert.Equal <bool>(false, message.Header.Retain);
Assert.Equal <MqttQos>(MqttQos.AtMostOnce, message.Header.Qos);
Assert.Equal <MqttMessageType>(MqttMessageType.ConnectAck, message.Header.MessageType);
Assert.Equal <int>(2, message.Header.MessageSize);
// validate the variable header
//Assert.Equal<int>(30, message.VariableHeader.KeepAlive);
Assert.Equal <MqttConnectReturnCode>(MqttConnectReturnCode.UnacceptedProtocolVersion, message.VariableHeader.ReturnCode);
}
public void MessageReceived(byte[] message)
{
MqttMessage incoming = MqttMessage.CreateFrom(message);
switch (incoming.Header.MessageType)
{
}
}
public void Payload_InvalidClientIdenfierLength()
{
// Our test deserialization message, with the following properties. Note this message is not
// yet a real MQTT message, because not everything is implemented, but it must be modified
// and ammeneded as work progresses
//
// Message Specs________________
// <10><15><00><06>MQIsdp<03><02><00><1E><00><07>andy111andy111andy111andy111
var sampleMessage = new[]
{
(byte)0x10,
(byte)0x15,
(byte)0x0,
(byte)0x6,
(byte)'M',
(byte)'Q',
(byte)'I',
(byte)'s',
(byte)'d',
(byte)'p',
(byte)0x3,
(byte)0x2,
(byte)0x0,
(byte)0x1E,
(byte)0x0,
(byte)0x1C,
(byte)'a',
(byte)'n',
(byte)'d',
(byte)'y',
(byte)'1',
(byte)'1',
(byte)'1',
(byte)'a',
(byte)'n',
(byte)'d',
(byte)'y',
(byte)'1',
(byte)'1',
(byte)'1',
(byte)'a',
(byte)'n',
(byte)'d',
(byte)'y',
(byte)'1',
(byte)'1',
(byte)'1',
(byte)'a',
(byte)'n',
(byte)'d',
(byte)'y',
(byte)'1',
(byte)'1',
(byte)'1'
};
Assert.Throws <ClientIdentifierException>(() => MqttMessage.CreateFrom(sampleMessage));
}
public void Deserialize_Message_MessageType_UnsubscribeAck_ValidPayload()
{
// Message Specs________________
// <B0><02><00><04> (Subscribe ack for message id 4)
var sampleMessage = new[]
{
(byte)0xFF,
(byte)0x02,
(byte)0x0,
(byte)0x4,
};
Assert.Throws <InvalidMessageException>(() => MqttMessage.CreateFrom(sampleMessage));
}
public void SuccessfullResponseCausesConnectionStateConnected()
{
// register a method to process the Connect message and respond with a ConnectAck message
broker.SetMessageHandler((messageArrived) =>
{
MqttConnectMessage connect = (MqttConnectMessage)MqttMessage.CreateFrom(messageArrived);
MqttConnectAckMessage ack = new MqttConnectAckMessage().WithReturnCode(MqttConnectReturnCode.ConnectionAccepted);
broker.SendMessage(ack);
});
var ch = new SynchronousMqttConnectionHandler();
Assert.Equal <ConnectionState>(ConnectionState.Connected,
ch.Connect(mockBrokerAddress, mockBrokerPort, new MqttConnectMessage().WithClientIdentifier(testClientId)));
}
void PubSubWebSocketServer_NewDataReceived(WebSocketSession session, byte[] value)
{
MqttMessage incoming = MqttMessage.CreateFrom(value);
switch (incoming.Header.MessageType)
{
case MqttMessageType.Publish:
PublishReceived(session, (MqttPublishMessage)incoming);
break;
case MqttMessageType.Subscribe:
SubscribeReceived(session, (MqttSubscribeMessage)incoming);
break;
case MqttMessageType.Unsubscribe:
RemoveSubscriptions(session, ((MqttUnsubscribeMessage)incoming).Payload.Subscriptions);
var unsubAck = new MqttUnsubscribeAckMessage().WithMessageIdentifier(((MqttPublishReceivedMessage)incoming).VariableHeader.MessageIdentifier);
using (var messageStream = new MemoryStream())
{
unsubAck.WriteTo(messageStream);
ArraySegment <byte> bytes = new ArraySegment <byte>(messageStream.ToArray());
session.Send(bytes);
}
break;
case MqttMessageType.PublishAck:
//string messageId = session.PublishAcknowledged(((MqttPublishAckMessage)incoming).VariableHeader.MessageIdentifier);
//if (messageId != null)
// storageProvider.ReleaseMessage(messageId);
break;
case MqttMessageType.PublishReceived:
//messageId = session.PublishReceived(((MqttPublishReceivedMessage)incoming).VariableHeader.MessageIdentifier);
//if (messageId != null)
// storageProvider.ReleaseMessage(messageId);
break;
case MqttMessageType.PublishRelease:
//session.RemoveQoS2(((MqttPublishReleaseMessage)incoming).VariableHeader.MessageIdentifier);
//var pubComp = new MqttPublishCompleteMessage().WithMessageIdentifier(((MqttPublishReleaseMessage)incoming).VariableHeader.MessageIdentifier);
//session.Write(pubComp);
break;
case MqttMessageType.PublishComplete:
//session.PublishCompleted(((MqttPublishCompleteMessage)incoming).VariableHeader.MessageIdentifier);
break;
}
}
public void BasicDeserialization()
{
// Message Specs________________
// <C0><00>
var sampleMessage = new[]
{
(byte)0xC0,
(byte)0x00,
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttPingRequestMessage>(baseMessage);
}
public void MessageReceived(byte[] message)
{
try
{
MqttMessage incoming = MqttMessage.CreateFrom(message);
switch (incoming.Header.MessageType)
{
case MqttMessageType.SubscribeAck:
break;
default:
break;
}
}
catch (InvalidMessageException ex)
{
}
}
public virtual void Route(byte[] messageData, T session)
{
try
{
MqttMessage msg = MqttMessage.CreateFrom(messageData);
}
catch (TargetInvocationException ex)
{
var inner = ex.InnerException as HttpException;
session.Write(inner != null ? new ErrorMessage(inner.GetHttpCode(), inner.Message) : new ErrorMessage((ex.InnerException ?? ex).Message));
}
catch (HttpException ex)
{
session.Write(new ErrorMessage(ex.Message));
}
catch (Exception ex)
{
session.Write(new ErrorMessage(ex.Message));
}
}
public void ValidPayload()
{
// Message Specs________________
// <30><0C><00><04>fredhello!
var sampleMessage = new[]
{
(byte)0x30,
(byte)0x0C,
(byte)0x0,
(byte)0x4,
(byte)'f',
(byte)'r',
(byte)'e',
(byte)'d',
// message payload is here
(byte)'h',
(byte)'e',
(byte)'l',
(byte)'l',
(byte)'o',
(byte)'!',
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttPublishMessage>(baseMessage);
MqttPublishMessage message = (MqttPublishMessage)baseMessage;
// validate the message deserialization
Assert.Equal <bool>(false, message.Header.Duplicate);
Assert.Equal <bool>(false, message.Header.Retain);
Assert.Equal <MqttQos>(MqttQos.AtMostOnce, message.Header.Qos);
Assert.Equal <MqttMessageType>(MqttMessageType.Publish, message.Header.MessageType);
Assert.Equal <int>(12, message.Header.MessageSize);
// make sure the publish message length matches the expectred size.
Assert.Equal <int>(6, message.Payload.Message.Count);
}
public void PayloadTooShort()
{
// Message Specs________________
// <30><0C><00><04>fredhello!
var sampleMessage = new[]
{
(byte)0x30,
(byte)0x0C,
(byte)0x0,
(byte)0x4,
(byte)'f',
(byte)'r',
(byte)'e',
(byte)'d',
// message payload is here
(byte)'h',
(byte)'e',
(byte)'l',
(byte)'l',
(byte)'o',
};
Assert.Throws <InvalidPayloadSizeException>(() => MqttMessage.CreateFrom(sampleMessage));
}
public void BasicDeserialization()
{
// Our test deserialization message, with the following properties. Note this message is not
// yet a real MQTT message, because not everything is implemented, but it must be modified
// and ammeneded as work progresses
//
// Message Specs________________
// <10><15><00><06>MQIsdp<03><02><00><1E><00><07>andy111
var sampleMessage = new[]
{
(byte)0x10,
(byte)0x1B,
(byte)0x0,
(byte)0x6,
(byte)'M',
(byte)'Q',
(byte)'I',
(byte)'s',
(byte)'d',
(byte)'p',
(byte)0x3,
(byte)0x2E,
(byte)0x0,
(byte)0x1E,
(byte)0x0,
(byte)0x7,
(byte)'a',
(byte)'n',
(byte)'d',
(byte)'y',
(byte)'1',
(byte)'1',
(byte)'1',
(byte)0x00,
(byte)0x01,
(byte)'m',
(byte)0x00,
(byte)0x01,
(byte)'a'
};
MqttMessage baseMessage = MqttMessage.CreateFrom(sampleMessage);
Console.WriteLine(baseMessage.ToString());
// check that the message was correctly identified as a connect message.
Assert.IsType <MqttConnectMessage>(baseMessage);
MqttConnectMessage message = (MqttConnectMessage)baseMessage;
// validate the message deserialization
Assert.Equal <bool>(false, message.Header.Duplicate);
Assert.Equal <bool>(false, message.Header.Retain);
Assert.Equal <MqttQos>(MqttQos.AtMostOnce, message.Header.Qos);
Assert.Equal <MqttMessageType>(MqttMessageType.Connect, message.Header.MessageType);
Assert.Equal <int>(27, message.Header.MessageSize);
// validate the variable header
Assert.Equal <string>("MQIsdp", message.VariableHeader.ProtocolName);
Assert.Equal <int>(30, message.VariableHeader.KeepAlive);
Assert.Equal <int>(3, message.VariableHeader.ProtocolVersion);
Assert.True(message.VariableHeader.ConnectFlags.CleanStart);
Assert.True(message.VariableHeader.ConnectFlags.WillFlag);
Assert.True(message.VariableHeader.ConnectFlags.WillRetain);
Assert.Equal <MqttQos>(MqttQos.AtLeastOnce, message.VariableHeader.ConnectFlags.WillQos);
// payload tests
Assert.Equal <string>("andy111", message.Payload.ClientIdentifier);
Assert.Equal <string>("m", message.Payload.WillTopic);
Assert.Equal <string>("a", message.Payload.WillMessage);
}
public virtual void Route(byte[] messageData, T session)
{
try
{
MqttMessage incoming = MqttMessage.CreateFrom(messageData);
switch (incoming.Header.MessageType)
{
case MqttMessageType.Publish:
PublishReceived(session, (MqttPublishMessage)incoming);
break;
case MqttMessageType.Subscribe:
SubscribeReceived(session, (MqttSubscribeMessage)incoming);
break;
case MqttMessageType.Unsubscribe:
RemoveSubscriptions(session, ((MqttUnsubscribeMessage)incoming).Payload.Subscriptions);
var unsubAck = new MqttUnsubscribeAckMessage().WithMessageIdentifier(((MqttPublishReceivedMessage)incoming).VariableHeader.MessageIdentifier);
session.Write(unsubAck);
break;
case MqttMessageType.PublishAck:
string messageId = session.PublishAcknowledged(((MqttPublishAckMessage)incoming).VariableHeader.MessageIdentifier);
if (messageId != null)
{
storageProvider.ReleaseMessage(messageId);
}
break;
case MqttMessageType.PublishReceived:
messageId = session.PublishReceived(((MqttPublishReceivedMessage)incoming).VariableHeader.MessageIdentifier);
if (messageId != null)
{
storageProvider.ReleaseMessage(messageId);
}
break;
case MqttMessageType.PublishRelease:
session.RemoveQoS2(((MqttPublishReleaseMessage)incoming).VariableHeader.MessageIdentifier);
var pubComp = new MqttPublishCompleteMessage().WithMessageIdentifier(((MqttPublishReleaseMessage)incoming).VariableHeader.MessageIdentifier);
session.Write(pubComp);
break;
case MqttMessageType.PublishComplete:
session.PublishCompleted(((MqttPublishCompleteMessage)incoming).VariableHeader.MessageIdentifier);
break;
}
}
catch (TargetInvocationException ex)
{
var inner = ex.InnerException as HttpException;
session.Write(inner != null ? new ErrorMessage(inner.GetHttpCode(), inner.Message) : new ErrorMessage((ex.InnerException ?? ex).Message));
}
catch (HttpException ex)
{
session.Write(new ErrorMessage(ex.Message));
}
catch (Exception ex)
{
session.Write(new ErrorMessage(ex.Message));
}
}
