private Packet DoRecieve(MQTTClient mqttClient, IEnumerable<byte> dataBytes, out bool disconnect)
{
// declare hub
var hubContext = GlobalHost.ConnectionManager.GetHubContext<BrokerHub>();
List<byte> byteList = dataBytes.ToList();
MQTTPacketTypes mqttPacketType = (MQTTPacketTypes)byteList.First();
disconnect = false;
string data = string.Empty;
Packet responsePacket = null;
Console.ForegroundColor = ConsoleColor.Red;
switch (mqttPacketType)
{
// types we should recieve
case MQTTPacketTypes.PUBLISH:
Console.WriteLine("PUBLISH recieved");
var pubPacket = new Publish(byteList);
PublishToAllClients(pubPacket.TopicName, pubPacket.Payload);
data = string.Format("Topic: {0} Data: {1}", pubPacket.TopicName, pubPacket.Payload);
// responsePacket = new Puback();
break;
case MQTTPacketTypes.DISCONNECT:
Console.WriteLine("DISCONNECT recieved");
disconnect = true; // handle at the higher level
MQTTClient temp;
if (!ClientCollection.TryRemove(mqttClient.UniqueId, out temp))
{
//Trace.WriteLine("Error occurred removing client from client collection");
}
hubContext.Clients.All.clientDisconnected(mqttClient.UniqueId);
break;
case MQTTPacketTypes.PINGREQ:
Console.WriteLine("PINGREQ recieved");
var pingRespPacket = new Pingresp();
responsePacket = pingRespPacket;
break;
case MQTTPacketTypes.UNSUBSCRIBE:
Console.WriteLine("UNSUBSCRIBE recieved");
var unsubPacket = new Unsubscribe((List<byte>)dataBytes);
string summaryString = string.Empty;
foreach (var topic in unsubPacket.TopicNames)
{
hubContext.Clients.All.removeSubscription(mqttClient.UniqueId, topic);
summaryString += topic + " ";
}
data = string.Format("Topics: {0}",summaryString);
// remove all subscriptions in unsubscribe
mqttClient.SubscriptionList = mqttClient.SubscriptionList.Except(unsubPacket.TopicNames).ToList();
var unsubackPacket = new Unsuback(unsubPacket.PacketId);
responsePacket = unsubackPacket;
break;
case MQTTPacketTypes.SUBSCRIBE:
Console.WriteLine("SUBSCRIBE recieved");
var subPacket = new Subscribe((List<byte>)dataBytes);
List<int> subSuccess = new List<int>();
foreach (var item in subPacket.subList)
{
if(!mqttClient.SubscriptionList.Contains(item.Name))
{
mqttClient.SubscriptionList.Add(item.Name);
subSuccess.Add(1);
}
else
subSuccess.Add(0);
}
string summaryString2 = string.Empty;
foreach (var topic in subPacket.subList)
{
hubContext.Clients.All.addSubscription(mqttClient.UniqueId, topic.Name);
summaryString2 += topic.Name + " ";
}
data = string.Format("Topics: {0}",summaryString2);
var subAckPacket = new Suback(subPacket.PacketId, subSuccess.ToArray());
responsePacket = subAckPacket;
break;
case MQTTPacketTypes.CONNECT:
Console.WriteLine("CONNECT recieved");
var connectPacket = new Connect((List<byte>)dataBytes);
mqttClient.ClientID = connectPacket.ClientId;
ClientCollection.GetOrAdd(clientCounter, mqttClient);
hubContext.Clients.All.newClientConnected(mqttClient);
responsePacket = new Connack();
break;
// types we should NOT recieve
case MQTTPacketTypes.CONNACK:
Console.WriteLine("CONNACK recieved");
break;
case MQTTPacketTypes.SUBACK:
Console.WriteLine("SUBACK recieved");
break;
case MQTTPacketTypes.PINGRESP:
Console.WriteLine("PINGRESP recieved");
break;
case MQTTPacketTypes.UNSUBACK:
Console.WriteLine("UNSUBACK recieved");
break;
default:
Console.WriteLine("Unknown packet recieved");
break;
}
Console.ResetColor();
hubContext.Clients.All.newPacketRecieved(true, mqttClient.UniqueId, Enum.GetName(typeof(MQTTPacketTypes), mqttPacketType), data, DateTime.Now.ToLongTimeString());
return responsePacket;
}
private void DoRecieve(List<byte> dataBytes)
{
MQTTPacketTypes mqttPacketType = (MQTTPacketTypes)dataBytes.First();
string payload = string.Empty;
string topic = string.Empty;
int? packetId = null;
switch (mqttPacketType)
{
case MQTTPacketTypes.CONNACK:
Connected = true;
payload = "Connection acknowledged";
break;
case MQTTPacketTypes.PUBLISH:
var pubPacket = new Publish(dataBytes);
payload = pubPacket.Payload;
topic = pubPacket.TopicName;
break;
case MQTTPacketTypes.PUBACK:
payload = "Publish acknowledged";
break;
case MQTTPacketTypes.SUBACK:
var subackPacket = new Suback(dataBytes);
packetId = subackPacket.PacketId;
payload = "Subscription acknowledged";
break;
case MQTTPacketTypes.UNSUBACK:
var unsubackPacket = new Unsuback(dataBytes);
packetId = unsubackPacket.PacketId;
payload = "Unsubscription acknowledged";
break;
case MQTTPacketTypes.PINGRESP:
payload = "Ping response.";
break;
// other packet types that our clients shouldn't recieve
case MQTTPacketTypes.DISCONNECT:
case MQTTPacketTypes.PINGREQ:
case MQTTPacketTypes.UNSUBSCRIBE:
case MQTTPacketTypes.SUBSCRIBE:
case MQTTPacketTypes.CONNECT:
default:
payload = "Invalid receive or unknown packet";
break;
}
AddListViewItem(true, mqttPacketType, packetId, topic, payload, DateTime.Now);
}