An example of a drab app running in an umbrella with server: false and the websockets routing correctly
In this example use MIX_ENV=dev
localhost:4000 should route to the Unf.Endpoint, and 127.0.0.1:4000 should route to the DrabExampl.Endpoint
the key to getting this to work is to use the risky dispatch option from phoenix
(https://github.com/jschoch/drab_umbrella_example/blob/master/apps/rtr/config/dev.exs#L25-L34)
Below is a working config for the dev enf
config :rtr, Rtr.Endpoint,
http: [
port: 4000,
dispatch: [
{:_, [
{"/socket/websocket", Phoenix.Endpoint.CowboyWebSocket, {Phoenix.Transports.WebSocket,
{DrabExample.Endpoint, DrabExample.UserSocket, :websocket}}},
{"/phoenix/live_reload/socket/websocket", Phoenix.Endpoint.CowboyWebSocket,
{Phoenix.Transports.WebSocket, {DrabExample.Endpoint, Phoenix.LiveReloader.Socket, :websocket}}
},
{:_, Plug.Adapters.Cowboy.Handler, {Rtr.Endpoint, []}}
]}]
],
debug_errors: true,
code_reloader: true,
check_origin: false,
watchers: []Then I used a plug to select the other host routes based on the conn.host
https://github.com/jschoch/drab_umbrella_example/blob/master/apps/rtr/lib/umb.ex
defmodule URtr do
require Logger
import Plug.Conn
@doc false
def init(default), do: default
@doc false
def call(conn, _router) do
Logger.error "host " <> conn.host <> "path " <> conn.request_path
case conn.host do
"localhost" ->
Logger.error "localhost"
UnfWeb.Endpoint.call(conn,[])
|> halt
"127.0.0.1" ->
Logger.error "127"
DrabExample.Endpoint.call(conn,[])
|> halt
any ->
Logger.error "any"
UnfWeb.Endpoint.call(conn,[])
|> halt
end
end
endWondering how to support multiple drab hosts behind a single router
Along the way I found a few examples that help understand how this works
https://elixirforum.com/t/dynamic-phoenix-routes-using-ets-with-sockets-and-channels/1613 https://elixirforum.com/t/plan-old-websockets-in-phoenix-but-without-magic/10074/19 https://elixirforum.com/t/umbrella-apps-on-heroku-channels-not-connecting/8039/2
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