works well in kestrel but not in IIS ?

[ljzj2]

I am sorry I do not know If I can ask the questions here or in MQTTnet.

I am using asp.net core web 9.0 and MQTTnet.AspNetCore

I use it well in Keystrel and can not use it in IIS.
If I use dotnet myweb.dll and I can connect it in my client.

but I can not connect it if the web is in IIS. and I will get the error :remote closed a socket connection.

[gfoidl]

Can you give use some more information? So this issue ins't actionable (in either way).

In IIS did you configure the correct ports / does the client use the correct ports as exposed by IIS?
Can you access a simple web-app (e.g. one from the .NET templates) in IIS -- just to exclude that the failure comes from MQTT.NET.

[ljzj2]

1. I think the port is right since I can use same code in dotnet Myweb.dll and the client use the same port .(default port).
2. yes I can access simple web page
3. my website in IIS use tls (simple web-page) but I have also add 80 port and I can access it too. but the MQTT can not access (the server close the socket)

[gfoidl]

Then it sounds like an issue for MQTT.NET, and should be transferred (I don't have the rights to do so).

[ljzj2]

ok thank you