ruby-on-rails - Rails Streaming 不是 Streaming

Question

我正在努力将流组件添加到我的 Rails 应用程序中，因为我想开始使用 SSE。我已经尝试在一个较小的示例中让它工作，但仍然遇到问题。实际上，我一直无法让 Rails 正确流式传输对 curl 请求的响应。我正在学习 http://tenderlovemaking.com/2012/07/30/is-it-live.html 上的教程.我不确定我是否必须为 OSX 配置某些东西，或者我的配置中是否缺少某些东西。任何帮助将不胜感激。

我在 OSX 上本地运行它。当我运行 curl -i localhost:3000 时，我得到以下响应:

HTTP/1.1 200 OK
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-UA-Compatible: chrome=1
Content-Type: text/event-stream
Last-Modified: Wed Apr 23 23:10:15 2014
Cache-Control: no-cache
Set-Cookie: request_method=GET; path=/
X-Request-Id: 89f2af3e-76e9-4873-85b0-3b6fe45f6343
X-Runtime: 0.001724
Transfer-Encoding: chunked

hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world
hello world

问题是我一下子得到了所有的信息，而不是像预期的那样得到一些响应。如果我需要提供更多信息，请告诉我

我的代码如下:

stream_test_controller.rb

class StreamTestController < ActionController::Base
  include ActionController::Live

  def index
    response.headers['Content-Type'] = 'text/event-stream'
    10.times {
      logger.info "hello world sent"
      response.stream.write "hello world\n"
      sleep 1
    }
    response.stream.close
  end
end

gem 文件

source 'https://rubygems.org'  
ruby '2.1.0'

gem 'rails', '4.0.3'
gem 'sqlite3'
gem 'sass-rails', '~> 4.0.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 1.2'
gem 'puma'

group :doc do
  gem 'sdoc', require: false
end

development.rb

StreamTest::Application.configure do

  config.preload_frameworks = true
  config.allow_concurrency = true
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development    
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = true

  # Do not eager load code on boot.
  config.eager_load = true

  # Show full error reports and disable caching.
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise an error on page load if there are pending migrations
  config.active_record.migration_error = :page_load

  # Debug mode disables concatenation and preprocessing of assets.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = true
end

Answer 1

来自 the documentation here , 你在用WEBrick测试吗？

WEBrick servers buffer all responses, and so including ActionController::Live will not work. You must use a web server which does not automatically buffer responses.