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Unable to proxy websockets? #63

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teamon opened this issue May 11, 2022 · 2 comments
Open

Unable to proxy websockets? #63

teamon opened this issue May 11, 2022 · 2 comments

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@teamon
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teamon commented May 11, 2022

I'm trying to use Phoenix LiveView over tunnelto. Everything works just fine without proxy or when using ngrok.
With tunnelto I get:

[info] Sent 200 in 2ms
[info] CONNECTED TO Phoenix.LiveView.Socket in 25µs
  Transport: :websocket
  Serializer: Phoenix.Socket.V2.JSONSerializer
  Parameters: %{...}
[debug] LiveView session was misconfigured or the user token is outdated.

1) Ensure your session configuration in your endpoint is in a module attribute:

    @session_options [
      ...
    ]

2) Change the `plug Plug.Session` to use said attribute:

    plug Plug.Session, @session_options

3) Also pass the `@session_options` to your LiveView socket:

    socket "/live", Phoenix.LiveView.Socket,
      websocket: [connect_info: [session: @session_options]]

4) Ensure the `protect_from_forgery` plug is in your router pipeline:

    plug :protect_from_forgery

5) Define the CSRF meta tag inside the `<head>` tag in your layout: 

    <%= csrf_meta_tag() %>

6) Pass it forward in your app.js:

    let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content");
    let liveSocket = new LiveSocket("/live", Socket, {params: {_csrf_token: csrfToken}});

This happens in all browsers.
Standard HTTP requests are proxies just fine.
tunnelto version is 0.1.18.
@renataogarcia
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I'm trying to use websocksets with Vite and the problem I have is that when running:

tunnelto -p 3000 -s mydomain

It binds https://mydomain.tunnelto.dev to http://localhost:3000 as expected but the wss://mydomain.tunnelto.dev doesn't work and the browser fails with:
WebSocket connection to 'wss://mydomain.tunnelto.dev/' failed

No errors on tunnelto output.

I've also tried 1.19 version mentioned here without success.

It works with ngrok and localtunnel.

@mitkodkn
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Any updates on this?

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3 participants
@teamon @renataogarcia @mitkodkn