Question on the usage of conn vs socket in a navigation

[codeanpeace]

Yup, websocket connection are just upgraded HTTP connections!

Protocol upgrade mechanism

The HTTP/1.1 protocol provides a special mechanism that can be used to upgrade an already established connection to a different protocol, using the Upgrade header field.

This mechanism is optional… and in practice, this mechanism is used mostly to bootstrap a WebSockets connection.

source: Protocol upgrade mechanism - HTTP | MDN

And with LiveView, the handoff between the two is configured and can be customized as described here.

Fundamentals of passing data from the Plug connection to the LiveView

There are two ways: By storing it in the session. You can define a plug that executes in your router and calls put_session to store the locale in the session. Then it will be available in the session in mount/3. This is the preferred approach and we even have an example with it in the docs: https://hexdocs.pm/phoenix_live_view/Phoenix.LiveView.html#module-using-gettext-for-internationalization Via get_connect_params. Open up your app.js and you will see there are some parameters passed to …