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A classic job interview question is: "What happens when you type a URL into your browser's address bar and hit Enter?" In my last post, I explained how it works in a Phoenix app: Phoenix initializes a
%Plug.Conn{}representing the incoming HTTP request, then passes it through a chain of functions returning a new%Plug.Conn{}with the response.For a static page rendered by a controller, that's all. But if the page is a LiveView (arguably Phoenix's killer feature), we're only just beginning. In this post I'll continue the story and explain how pressing "Enter" in your address bar can make Phoenix open a websocket and mount a LiveView.
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