ruby Sinatra与EventMachine WebSockets一起工作是否成功?

6tqwzwtp  于 2022-12-03  发布在  Ruby
关注(0)|答案(5)|浏览(95)

我一直在使用Sinatra一段时间了,我想通过Websockets推送数据,为我的Web应用程序添加一些实时功能。
我已经成功地使用了gem 'em-websocket',但是还没有能够编写一个有sinatra web服务器和web-socket服务器的ruby文件。
我尝试过在单独的线程中旋转run!或start!方法,但没有成功。
有人成功了吗
我想把它们放在同一个文件中,这样我就可以在两个服务器之间共享变量。

eqqqjvef

eqqqjvef1#

虽未试过,但不宜过猛:

require 'em-websocket'
require 'sinatra/base'
require 'thin'

EM.run do
  class App < Sinatra::Base
    # Sinatra code here
  end

  EM::WebSocket.start(:host => '0.0.0.0', :port => 3001) do
    # Websocket code here
  end

  # You could also use Rainbows! instead of Thin.
  # Any EM based Rack handler should do.
  Thin::Server.start App, '0.0.0.0', 3000
end

此外,Cramp有一个WebSocket实现,它可以直接与Thin/Rainbows!一起工作,所以你甚至不需要在另一个端口上运行服务器。

pvcm50d1

pvcm50d12#

谢谢Konstantin...这很有用!我必须稍微调整你的代码。我在我修改的地方添加了注解。

  • 普尔
require 'rubygems'      # <-- Added this require
require 'em-websocket'
require 'sinatra/base'
require 'thin'

EventMachine.run do     # <-- Changed EM to EventMachine
  class App < Sinatra::Base
      get '/' do
          return "foo"
      end
  end

  EventMachine::WebSocket.start(:host => '0.0.0.0', :port => 8080) do |ws| # <-- Added |ws|
      # Websocket code here
      ws.onopen {
          ws.send "connected!!!!"
      }

      ws.onmessage { |msg|
          puts "got message #{msg}"
      }

      ws.onclose   {
          ws.send "WebSocket closed"
      }

  end

  # You could also use Rainbows! instead of Thin.
  # Any EM based Rack handler should do.
  App.run!({:port => 3000})    # <-- Changed this line from Thin.start to App.run!
end
67up9zun

67up9zun3#

我偶然发现了这个websocket-rack github项目,它基本上是一个机架化的em-websocket,实际上它可以很好地与一个Sinatra应用程序并行工作config.ru:

require 'rubygems'
require 'rack/websocket'
require 'sinatra/base'

class WebSocketApp < Rack::WebSocket::Application
  # ...
end

class SinatraApp < Sinatra::Base
  # ...
end

map '/ws' do
  run WebSocketApp.new
end

map '/' do
  run SinatraApp
end

玩得开心点!
柯林

icnyk63a

icnyk63a4#

我一直在使用sinatra-websocket,它可以让你在与Sinatra相同的进程和端口上运行WebSocket服务器。
免责声明:我是维护者。

require 'sinatra'
require 'sinatra-websocket'

set :server, 'thin'
set :sockets, []

get '/' do
  if !request.websocket?
    erb :index
  else
    request.websocket do |ws|
      ws.onopen do
        ws.send("Hello World!")
        settings.sockets << ws
      end
      ws.onmessage do |msg|
        EM.next_tick { settings.sockets.each{|s| s.send(msg) } }
      end
      ws.onclose do
        warn("websocket closed")
        settings.sockets.delete(ws)
      end
    end
  end
end

__END__
@@ index
<html>
  <body>
     <h1>Simple Echo & Chat Server</h1>
     <form id="form">
       <input type="text" id="input" value="send a message"></input>
     </form>
     <div id="msgs"></div>
  </body>

  <script type="text/javascript">
    window.onload = function(){
      (function(){
        var show = function(el){
          return function(msg){ el.innerHTML = msg + '<br />' + el.innerHTML; }
        }(document.getElementById('msgs'));

        var ws       = new WebSocket('ws://' + window.location.host + window.location.pathname);
        ws.onopen    = function()  { show('websocket opened'); };
        ws.onclose   = function()  { show('websocket closed'); }
        ws.onmessage = function(m) { show('websocket message: ' +  m.data); };

        var sender = function(f){
          var input     = document.getElementById('input');
          input.onclick = function(){ input.value = "" };
          f.onsubmit    = function(){
            ws.send(input.value);
            input.value = "send a message";
            return false;
          }
        }(document.getElementById('form'));
      })();
    }
  </script>
</html>
zi8p0yeb

zi8p0yeb5#

仅供参考,您也可以将Padrino应用程序与EventMachine一起使用(因为它们是Sinatra应用程序的子集):

require 'rubygems'
require 'eventmachine'
require 'padrino-core'
require 'thin'
require ::File.dirname(__FILE__) + '/config/boot.rb'

EM.run do
  Thin::Server.start Padrino.application, '0.0.0.0', 3000
end

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