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I run volunteer video production for a remotely broadcasted event. Our participants ("users") will be running a specifically configured version of OBS Studio with the obs-websocket plugin installed. This will run a local websocket service on port 4444 on the user machines, which I am looking to access server-side for stats monitoring/etc.

Most of our users will not be able to port forward. They can connect to any web services on their end. On our end, we have a fixed IP server running NodeCG and other services.

Are there existing tools that can manage multiple proxied websocket connections by having software on user machines initiate a connection to a service hosted on our end and have that software tunnel their local ports?

As an example, I can send the following request to a local obs-websockets instance:

{ "message-id": "1", "request-type": "GetStats" }

Response:

{ "message-id": "1", "stats": { /* Stats */ } }

I would like to be able to send a request to a central service on our end looking something like this:

{
  "tunnel-id": "USER-ID-HERE",
  "data": { "message-id": "1", "request-type": "GetStats" }
}

and receive back a response from the tunneled service:

{
  "tunnel-id": "USER-ID-HERE",
  "data": { "message-id": "1", "stats": { /* Stats */ } }
}

The protocol is just an example, and it doesn't have to be specifically websocket based (although a native node-js solution would obviously be very easy to work with). SSH port tunneling is not an option as this only allows a one to one port tunnel.

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