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During testing with MQTTBox and the Secure module, connecting using a secure tcp or wss connection succeeds. If you try to make a non secure tcp or non secure ws connection, you can no longer make a new connection to the modules tcp or wss server.

If you attempt to connect to the secure tcp server, with a non secure connection, it affects only the secure tcp server, and not the wss server. This is also true in the oposite case.

Hi,

Is it possible a have the broker + a client on the same processor?

In fact, have the broker on the Crestron and use those information on the processor.

When forcefully disconnecting a client (pull ethernet out of device) Exception is thrown

Error: splusmanagerapp.exe [App 4] # 2021-01-13 18:52:19 # Exception:Exception in customer callback function - System.InvalidOperationException: Sequence contains no elements
at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
at sahajquinci.MQTT_Broker.ServerBase.GetClientByIndex(UInt32 client 8. Error: splusmanagerapp.exe [App 4] # 2021-01-13 18:52:19 # Index, Boolean isWebSocketClient)
at sahajquinci.MQTT_Broker.TCPServer.DisconnectClient(UInt32 clientIndex, Boolean withDisconnectPacket)
at sahajquinci.MQTT_Broker.TCPServer.ConnectionCallback(TCPServer server, UInt32 clientIndex)
at Crestron 9. Error: splusmanagerapp.exe [App 4] # 2021-01-13 18:52:19 # .SimplSharp.CrestronSockets.TCPServer.e(IAsyncResult A_0)
at System.Net.LazyAsyncResult.InvokeCallback(Boolean asyncCompletion)
at System.Net.Sockets.Socket.WorkerThread.doWork()
at System.Net.Sockets.Socket.WorkerThread.doWorkI(Object o)
10. Error: splusmanagerapp.exe [App 4] # 2021-01-13 18:52:19 # at System.Threading.ThreadPool.WorkItem.doWork(Object o)
at System.Threading.Timer.ring()

When using the NON TLS demo on a processor, and trying to connect with MQTTLens, there is an error that gets thrown.

Steps to recreate:

1. Load NON TLS Demo to processor
2. Using MQTTLens with default settings, connect to processor
3. Look at error log.

Error:
5. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:31 # Exception:Exception in customer callback function - System.InvalidOperationException: Sequence contains no elements
at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
at sahajquinci.MQTT_Broker.ServerBase.GetClientByIndex(UInt32 client 6. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:31 # Index, Boolean isWebSocketClient)
at sahajquinci.MQTT_Broker.TCPServer.DisconnectClient(UInt32 clientIndex, Boolean withDisconnectPacket)
at sahajquinci.MQTT_Broker.TCPServer.ConnectionCallback(TCPServer server, UInt32 clientIndex)
at Crestron 7. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:31 # .SimplSharp.CrestronSockets.TCPServer.e(IAsyncResult A_0)
at System.Net.LazyAsyncResult.InvokeCallback(Boolean asyncCompletion)
at System.Net.Sockets.Socket.WorkerThread.doWork()
at System.Net.Sockets.Socket.WorkerThread.doWorkI(Object o)
8. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:31 # at System.Threading.ThreadPool.WorkItem.doWork(Object o)
at System.Threading.Timer.ring()

9. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:32 # Exception:Exception in customer callback function - System.InvalidOperationException: Sequence contains no elements
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
   at sahajquinci.MQTT_Broker.ServerBase.GetClientByIndex(UInt32 client 10. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:32 # Index, Boolean isWebSocketClient)
   at sahajquinci.MQTT_Broker.TCPServer.DisconnectClient(UInt32 clientIndex, Boolean withDisconnectPacket)
   at sahajquinci.MQTT_Broker.TCPServer.ConnectionCallback(TCPServer server, UInt32 clientIndex)
   at Crestron 11. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:32 # .SimplSharp.CrestronSockets.TCPServer.e(IAsyncResult A_0)
   at System.Net.LazyAsyncResult.InvokeCallback(Boolean asyncCompletion)
   at System.Net.Sockets.Socket.WorkerThread.doWork()
   at System.Net.Sockets.Socket.WorkerThread.doWorkI(Object o)
   12. Error: splusmanagerapp.exe [App 4] # 2021-01-13 06:25:32 # at System.Threading.ThreadPool.WorkItem.doWork(Object o)
   at System.Threading.Timer.ring()

Trying various configurations, I ran into an issue where I can not use a MQTT client such as MQTTLens to view telemetry. When Connecting, the module throws an error: ClientConnected: Invalid client Index 0.

After this error, no other users can connect.

Processor: AV3
Firmware; 1.603.4298.28152
Using: NO TLS module

SIMPL Windows: 4.14.21
SIMPL+ 4.05.01
Path: C:\Program Files (x86)\Crestron\Simpl

INCLUDE4_2SERIES.DAT Version Information:
(2 Series) : 1.80

INCLUDE4.DAT Version Information:
(3 & 4 Series) : 2.14.131

Data Files:
Path: C:\Program Files (x86)\Crestron\Cresdb\Programming

Symlib2.Tio 1125 11/30/2020 06:11:24PM

iodev.tio 1125 11/30/2020 06:11:22PM

Other Crestron SW:

    Device Database: 200.35.003.00
    Crestron Database (cnctrldb22000.mdb) :  202.00.001.00
    Crestron Toolbox: 3.07.323.00
    SIMPL+ Cross Compiler: 1.3

Client ID: lens
HEX DUMP from Wireshark

00000000  10 12 00 06 4d 51 49 73  64 70 03 02 00 78 00 04   ....MQIs dp...x..
00000010  6c 65 6e 73                                                               lens