通过curl发送消息给websocket-rails

Question

我使用了这个宝石https://github.com/websocket-rails/websocket-rails。和 我尝试通过curls在websocket-rails app中创建新用户。例如：

curl http://localhost:3000/websocket -d 'message={"channel":"/new_user", "user_name":"user1"}'

http://localhost:3000/websocket_rails

http://localhost:3000/faye

http://localhost:3000/

但我总是收到错误：

ActionController::RoutingError (No route matches [POST] "/websocket_rails"):
ActionController::RoutingError (No route matches [POST] "/websocket"):

等...

rake routes：

Prefix Verb URI Pattern             Controller#Action
public_index GET /public/index(.:format) public#index
        root GET /                       public#index
   websocket GET /websocket(.:format)    websocket_rails

routes.rb

Ws42::Application.routes.draw do
  get "public/index"
  root to: "public#index"
end

我必须在http://localhost:3000/之后写下哪个地址？