Is it possible to pass Authorization header to Absinthe/Phoenix framework?

[ademola-raimi]

Intended outcome:

I want to pass an authorization header headers: { authorization: Bearer token } } to my WS connection

I tried:

  const wsClient = new PhoenixSocket(
  AUTH_ABSINTHE_SOCKET_ENDPOINT,
  {
    reconnect: true,
    connectionParams: () => ({
      headers: {
        'authorization': `Bearer ${token}`,
      },
    }),
  },
);
const link = createAbsintheSocketLink(AbsintheSocket.create(wsClient));

I also tried:

const authLink = setContext((_, { headers }) => {
  // Get the authentication token from the cookie if it exists.
  

  // Add the new Authorization header.
  return {
    headers: {
      ...headers,
      authorization: token ? `Bearer ${token}` : '',
    },
  };
});

const wsLink = createAbsintheSocketLink(
	AbsintheSocket.create(
		new PhoenixSocket(AUTH_ABSINTHE_SOCKET_ENDPOINT, {
			reconnect: true,
			timeout: 30000,
			params: { UA: navigator.userAgent },
		})
	)
);

const link = authLink.concat(wsLink);

This is similar to the issue here.

[vadimshvetsov]

It's impossible because websocket connections are stateless and have no headers.

You can pass your token in params on connect.

const phoenixSocket = new PhoenixSocket('ws://localhost:4000/socket', {
  params: () => {
    const token = localStorage.getItem('token') // Or where do you store it

    return token ? { token } : {}
  },
})

And then hold it inside connection context on a backend side while it is active

defmodule YourAppWeb.UserSocket do
  use Phoenix.Socket
  use Absinthe.Phoenix.Socket, schema: YourAppWeb.Schema

  def connect(params, socket, _connect_info) do
    current_user = current_user(params) # Here you get user from params.token

    socket =
      Absinthe.Phoenix.Socket.put_options(socket,
        context: %{
          current_user: current_user
        }
      )

    {:ok, socket}
  end

  defp current_user(%{token: token}) do
    # How do you get user
  end

  defp current_user(_params), do: nil

  def id(_socket), do: nil
end

[peaceful-james]

For posterity: this is also in the docs
https://hexdocs.pm/absinthe/subscriptions.html#setting-options