broadcast

<%# Append is also broadcast from the model; this response scrolls the author's view %>
<%= turbo_stream.append "messages" do %>
  <%= render partial: "messages/message", locals: { message: @message } %>
<% end %>

<turbo-stream action="scroll_to" target="<%= dom_id(@message) %>" behavior="smooth" block="end">

use axum::extract::ws::{Message, WebSocket, WebSocketUpgrade};
use axum::extract::State;
use axum::response::Response;
use axum::routing::get;
use axum::Router;

use tokio::sync::broadcast;

pub struct Shutdown {
    is_shutdown: bool,
    notify: broadcast::Receiver<()>,
}