Rails - WebSocket

Question

我想使用WebSocket将数据推送到客户端。我现在不知道如何返回数据(从Redis)到客户端。有人能给我解释一下吗?

sockets_controller.rb

class SocketsController < WebsocketRails::BaseController
  def create
    send_message :new_event, {:message => 'TEST'}
  end
end

events.rb

WebsocketRails::EventMap.describe do
  subscribe :new_event, 'sockets#create'
end

websocket_rails.rb

WebsocketRails.setup do |config|
  config.redis_options = { driver: :ruby }
  config.standalone = false
  config.synchronize = true
end

客户端:

$socket.on('test', function(data) {
console.log(data);
    $scope.events.upshift(data);
if($scope.events.length>50){
$scope.events.length=50;
EventsList =$scope.events;
}
});
routerApp.config(["$socketProvider", function ($socketProvider) {
  $socketProvider.setUrl("http://172.16.20.179:3000/events");
}]);

客户端问题如下:

GET http://172.16.20.179:3000/socket.io/?
EIO=3&transport=polling&t=1439215071732-9
XMLHttpRequest cannot load http://172.16.20.179:3000/socket.io/?
EIO=3&transport=polling&t=1439215056291-6. No 'Access-Control-Allow-
Origin' header is present on the requested resource. Origin 
'http://localhost:4000' is therefore not allowed access. The response 
had HTTP status code 404.

Answer 1

似乎你正在尝试使用Socket.IO的web套接字。Rails没有支持Socket.IO的实现。

如果你想要一个关于如何从Angular.JS中与websocket-rails交互的例子，你可以使用下面的指南:

https://medium.com/@karimbutt集成- websocket rails -与- angularjs -或-其他- js框架- 256729 - e95a86