Broadcast c.WriteMessage to all listeners matching :id param

[kazzkiq]

I have this specific scenario where my application spawns n chat channels, (think of it like chat rooms with many listening and only one speaking) with n users listening each channel.

Only a central authority can broadcast to those channels (e.g. my app), and I plan to fire broadcasting in other parts of my application which are in other files, so I have no more access to the c context variable directly.

Is it possible to actually fire c.WriteMessage from other parts of the project?

Relevant code snippet:

app.Get("/ws/channels/:id", websocket.New(func(c *websocket.Conn) {
  id := c.Params("id")

  // How can I save ReadMessage() and WriteMessage() instances
  // in such a manner that I can call them from any other place in
  // my Fiber application?
  //
  // But also have the intelligence of only broadcasting to those
  // who matches the same id param of my broadcast? 
  readMessageInstance := c.ReadMessage
  writeMessageInstance := c.WriteMessage

}))