套接字无法连接到端点

var socket = new Socket("localhost:4000")
socket.connect()

Returns WebSocket connection to 'ws://localhost:4000/ws' failed: Error during WebSocket handshake: Unexpected response code: 404

但我确实有插座/ws终点，对吗？

defmodule Sapphire.Endpoint do
  use Phoenix.Endpoint, otp_app: :sapphire

  socket "/ws", Sapphire.MomentSocket

  plug Plug.Static,
    at: "/", from: :sapphire, gzip: false,
    only: ~w(css fonts images js favicon.ico robots.txt)

  if code_reloading? do
    socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
    plug Phoenix.LiveReloader
    plug Phoenix.CodeReloader
  end

  plug Plug.RequestId
  plug Plug.Logger

  plug Plug.Parsers,
    parsers: [:urlencoded, :multipart, :json],
    pass: ["*/*"],
    json_decoder: Poison

  plug Plug.MethodOverride
  plug Plug.Head

  plug Plug.Session,
    store: :cookie,
    key: "_sapphire_key",
    signing_salt: "hW1bFEcR"

  plug Sapphire.Router

end

它应该能够连接到该端点，但由于某种原因它根本无法到达它。

[info] Running Sapphire.Endpoint with Cowboy on http://localhost:4000

@JoséValim 找到了解决方案。

我将 phoenix.js 库移植到 Coffeescript，但忽略了路径后缀应该是传输层的内容这一事实。在这种情况下，需要/websocket在实施的最后。 :)