Persistent TCP connection possible?

[ChPfisterer]

Hey guys, great work on the NGINX Proxy Manager!

Still there is one question, that I cannot answer myself.
Is it possible to establish a persistent TCP connection and send data?
Like: "External" Port 443 -> "NGINX ProxyManager" -> "Container" Port 1234

I am not talking about Websocket (ws://...), but persistent TCP connection (tcp://...).
I thought about NGINX advanced configuration, maybe?

Thanks in advance for your feedback.
Chris

[olariuromeo]

I think you can add a custom code that will then be added to each server or main nginx depend of your neds