Jquery 丢架EOFError（不良内容体）_Jquery_Ruby On Rails_Ruby_Rack

Jquery 丢架EOFError（不良内容体）

jquery ruby-on-rails ruby

Jquery 丢架EOFError（不良内容体）,jquery,ruby-on-rails,ruby,rack,Jquery,Ruby On Rails,Ruby,Rack,我们在jQuery1.11中使用Ruby2.1.2、Rails3.2.19，没有使用资产管道（因此不使用jQueryUJS，而是显式使用相关的Rails.js）。对于大多数用户来说，JQuery和其他相关的通用插件都是从GoogleCDN（包括JQuery.Form3.50）中提取出来的。受影响的web服务器是Ubuntu 14.04、Nginx 1.6和Passenger 4.x 对于生产服务器上大约10%的用户（负载似乎无关紧要），我们得到了如下堆栈转储，主要针对一个URL，但还有其他URL

我们在jQuery1.11中使用Ruby2.1.2、Rails3.2.19，没有使用资产管道（因此不使用jQueryUJS，而是显式使用相关的Rails.js）。对于大多数用户来说，JQuery和其他相关的通用插件都是从GoogleCDN（包括JQuery.Form3.50）中提取出来的。受影响的web服务器是Ubuntu 14.04、Nginx 1.6和Passenger 4.x

对于生产服务器上大约10%的用户（负载似乎无关紧要），我们得到了如下堆栈转储，主要针对一个URL，但还有其他URL：

/gems/rack-1.4.5/lib/rack/multipart/parser.rb:74 in "block in fast_forward_to_first_boundary"
/gems/rack-1.4.5/lib/rack/multipart/parser.rb:72 in "loop"
/gems/rack-1.4.5/lib/rack/multipart/parser.rb:72 in "fast_forward_to_first_boundary"
/gems/rack-1.4.5/lib/rack/multipart/parser.rb:15 in "parse"
/gems/rack-1.4.5/lib/rack/multipart.rb:25 in "parse_multipart"
/gems/rack-1.4.5/lib/rack/request.rb:336 in "parse_multipart"
/gems/rack-1.4.5/lib/rack/request.rb:201 in "POST"
/gems/actionpack-3.2.19/lib/action_dispatch/http/request.rb:237 in "POST"
/gems/actionpack-3.2.19/lib/action_dispatch/http/parameters.rb:10 in "parameters"
/gems/actionpack-3.2.19/lib/action_dispatch/http/filter_parameters.rb:31 in "filtered_parameters"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/rails3/action_controller.rb:31 in "process_action"
/gems/actionpack-3.2.19/lib/abstract_controller/base.rb:121 in "process"
/gems/actionpack-3.2.19/lib/abstract_controller/rendering.rb:45 in "process"
/gems/actionpack-3.2.19/lib/action_controller/metal.rb:203 in "dispatch"
/gems/actionpack-3.2.19/lib/action_controller/metal/rack_delegation.rb:14 in "dispatch"
/gems/actionpack-3.2.19/lib/action_controller/metal.rb:246 in "block in action"
/gems/actionpack-3.2.19/lib/action_dispatch/routing/route_set.rb:73 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/routing/route_set.rb:73 in "dispatch"
/gems/actionpack-3.2.19/lib/action_dispatch/routing/route_set.rb:36 in "call"
/gems/journey-1.0.4/lib/journey/router.rb:68 in "block in call"
/gems/journey-1.0.4/lib/journey/router.rb:56 in "each"
/gems/journey-1.0.4/lib/journey/router.rb:56 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/routing/route_set.rb:608 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/rack/error_collector.rb:50 in "traced_call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:55 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/rack/agent_hooks.rb:26 in "traced_call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:55 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/rack/browser_monitoring.rb:23 in "traced_call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:55 in "call"
/gems/oink-0.10.1/lib/oink/middleware.rb:17 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/warden-1.2.3/lib/warden/manager.rb:35 in "block in call"
/gems/warden-1.2.3/lib/warden/manager.rb:34 in "catch"
/gems/warden-1.2.3/lib/warden/manager.rb:34 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/best_standards_support.rb:17 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/etag.rb:23 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/conditionalget.rb:25 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/head.rb:14 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/params_parser.rb:21 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/flash.rb:242 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/session/abstract/id.rb:210 in "context"
/gems/rack-1.4.5/lib/rack/session/abstract/id.rb:205 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/cookies.rb:341 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/activerecord-3.2.19/lib/active_record/query_cache.rb:64 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:479 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/callbacks.rb:28 in "block in call"
/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:405 in "_run__3807242266783802268__call__1942732928323145202__callbacks"
/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:405 in "__run_callback"
/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:385 in "_run_call_callbacks"
/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:81 in "run_callbacks"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/callbacks.rb:27 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/sendfile.rb:102 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/remote_ip.rb:31 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/debug_exceptions.rb:16 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/show_exceptions.rb:56 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/railties-3.2.19/lib/rails/rack/logger.rb:32 in "call_app"
/gems/railties-3.2.19/lib/rails/rack/logger.rb:18 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/actionpack-3.2.19/lib/action_dispatch/middleware/request_id.rb:22 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/methodoverride.rb:21 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/runtime.rb:17 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/activesupport-3.2.19/lib/active_support/cache/strategy/local_cache.rb:72 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-1.4.5/lib/rack/lock.rb:15 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/rack-cache-1.2/lib/rack/cache/context.rb:136 in "forward"
/gems/rack-cache-1.2/lib/rack/cache/context.rb:245 in "fetch"
/gems/rack-cache-1.2/lib/rack/cache/context.rb:185 in "lookup"
/gems/rack-cache-1.2/lib/rack/cache/context.rb:66 in "call!"
/gems/rack-cache-1.2/lib/rack/cache/context.rb:51 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/railties-3.2.19/lib/rails/engine.rb:484 in "call"
/gems/railties-3.2.19/lib/rails/application.rb:231 in "call"
/gems/railties-3.2.19/lib/rails/railtie/configurable.rb:30 in "method_missing"
/gems/rack-1.4.5/lib/rack/urlmap.rb:64 in "block in call"
/gems/rack-1.4.5/lib/rack/urlmap.rb:49 in "each"
/gems/rack-1.4.5/lib/rack/urlmap.rb:49 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/gems/sass-3.2.19/lib/sass/plugin/rack.rb:54 in "call"
/gems/newrelic_rpm-3.9.3.241/lib/new_relic/agent/instrumentation/middleware_tracing.rb:57 in "call"
/var/www/.rvm/gems/ruby-2.1.2/gems/passenger-4.0.45/lib/phusion_passenger/rack/thread_handler_extension.rb:74 in "process_request"
/var/www/.rvm/gems/ruby-2.1.2/gems/passenger-4.0.45/lib/phusion_passenger/request_handler/thread_handler.rb:141 in "accept_and_process_next_request"
/var/www/.rvm/gems/ruby-2.1.2/gems/passenger-4.0.45/lib/phusion_passenger/request_handler/thread_handler.rb:109 in "main_loop"
/var/www/.rvm/gems/ruby-2.1.2/gems/passenger-4.0.45/lib/phusion_passenger/request_handler.rb:448 in "block (3 levels) in start_threads"

在从1.5（！）升级到jQuery1.11之前，这个错误没有发生（或者如果发生了，那是非常罕见的）。到目前为止，我们无法在登台服务器或开发环境中重现此错误。一位技术支持人员在生产环境中看到过一次（我已经尝试过好几次），但无法在登台时进行复制（登台与生产环境相同，但资源较少）。jQueryMigrate在运行时没有显示任何问题，正如我所说的，它似乎对大多数用户都有效；在调试会话期间，似乎没有任何问题。操作系统/平台或浏览器没有明显的模式（尝试在多个日志上复制，虽然很难筛选到足以确定的模式，但日志并不表示模式）。涉及的主要URL用于表单控制器上的#新操作。我们在平台中还有其他几种形式，它们没有显示任何问题

因为我无法复制它，所以不可能给出代码片段——我不知道应该指出什么

到目前为止，我对错误的解释（基于堆栈转储中的第一行）是以下三种情况之一：

内容在其他方面是正确的，但在某种程度上不是完全形成的

内容的格式很差，这表明存在Ruby bug（不过（也许是JS）

糟糕的编码（我在Ruby中使用form_，甚至将“multipart:true”作为显式输入）

我看到Rack已经在4.x中处理了一个相关的多部分EOFError问题，但是我们运行的是Rails 3.2.19，它将我们锁定在一个较旧的版本上，升级到Rails 4.x在目前是不现实的。作为测试，我尝试将JQuery恢复到1.7，但似乎没有改变行为（任何旧版本，我必须删除JQuery 1.8+所需的代码更新）

由于JQuery代码需要对我们的JS进行更改，我怀疑我错过了一些必要的JS更改，但似乎没有任何问题。附近也有一些CSS更改，但我看不出这会对事情产生什么影响（因为在我们的各种测试环境中，一切都通过了，其他更改也包括在部署中）

我一直主要怀疑JS问题，但一些有限的生产测试（我必须在live server上小心，以免过于激进）没有显示任何线索或抛出任何似乎相关的错误

作为背景，我在Ruby和JS方面有大约一年的经验（尽管在其他编程平台上有很多年的经验），所以这完全可能是我不熟悉的基础知识

我很难集中精力解决这个问题。有什么诊断或解决的建议吗

更新（10/11/14）I monkey patched

Rack:：Multipart:：Parser.fast\u forward\u to\u first\u boundary

（谢谢，Isaac Betesh！）添加日志跟踪，并确认传递给解析器的内容在到达该函数（即

@env['Rack.input'引用的StringIO）时为空

在多部分解析期间，不返回任何数据）。我现在的理论是，当没有多部分数据时，它错误地期望多部分数据。同样，这只会间歇性地发生，并且对于同一页面的许多其他调用都可以很好地解析。由于我们使用的是Passenger 4.x和Nginx，我没有排除缓冲问题。

这最终解决了，我将公布发生的情况，以防对其他人有所帮助

摘要原始代码在JS中包含一个ajaxSubmit（通过jquery.form插件），它提交了一个带有多部分/表单数据编码的表单（作为帖子）（目前为止还不错）。处理提交的rails控制器正常处理数据，然后重定向到第二个href（作为GET）。浏览器（在返回到它的

success

callback处理程序之前，可能仍在通过jquery.form插件进行处理）收到重定向并保留多部分/表单数据编码类型。当rack接收到仍然指定了多部分编码的GET时，它会停止，因为没有要解析的多部分数据

很抱歉，我的作品中没有很多这方面的内容。我也不清楚为什么在较旧版本的JQuery和JQuery.form插件下可以这样做，或者为什么有时候在新的JQuery/JQuery.form下可以成功

解决方案重构控制器，使其不再重定向，而是返回原始ajaxSubmit的

成功

回调处理程序的URL（作为文本呈现）。

success

处理程序现在对返回的URL执行AJAX GET，从而使工作流保持不变，但避免对GET请求进行任何多部分编码

tl；博士：

在更改代码之前，我们有一个涉及Jquery.form的路径，它是这样的（代码示例并不意味着是可执行的，只是作为一个示例）：

Ruby视图（在HAML中表示提交的表单）：

Ruby控制器：

这被重构如下（同样，只是一个示例）：

Ruby视图（在HAML中表示提交的表单）：未更改

Ruby控制器：

这个解决方案是在当地开发人员的帮助下找到的（谢谢，Dan Axtman！），而且在monkey patched Loggin in Rack（谢谢，Isaac Betesh！）中花了不少时间。至少在这个过程中我学到了一些关于机架和猴子的补丁

如果您无法升级Rack，因为Rails 3正在锁定版本，请尝试在to处对文件中的单个类进行monkey修补

= form_for @someObject, html: {:multipart => true, :class => "someformclass"} do |f|
  = f.error_messages
  = hidden_field_tag :submitted, true
  =# some more fields
  %p.submits
    = f.submit "Submit", class: "submit"

class OurController < ApplicationController
  layout false
  before_filter :authenticate_user!

  # some other actions

  def create
    # some processing

    someObject.save
    redirect_to new_feedback_path, :method => :get, :notice => "notice text", status: 303
  end

  # some other actions
end

$(document).on('click', '.someformclass .submit', function() {
  ...
  $(this).parents('form').ajaxSubmit({     // uses jquery.form
    ...
    beforeSubmit: function(someargs) {
      ... blah blah
    },
    success: function(responseText) {
      // ... code to display flash message
      if (typeof(window.history.pushState) == 'function') {
        window.history.pushState('html', 'sometext', $.cookie('current_url'));
        matchFiltersClass(window.location.pathname);
      } else {
        window.location.hash = '#!' + $.cookie('current_path');
        matchFiltersClass($.cookie('current_path'));
      }
      $('#main_content').html(responseText);
    }
  });
  return false;
});

class OurController < ApplicationController
  layout false
  before_filter :authenticate_user!

  # some other actions

  def create
    # some processing

    someObject.save
    flash[:notice] = 'notice text'    # NEW LINE
    render text: new_feedback path, status: accepted  #CHANGED LINE
  end

  # some other actions
end

$(document).on('click', '.someformclass .submit', function() {
  ...
  $(this).parents('form').ajaxSubmit({     // uses jquery.form
    ...
    beforeSubmit: function(someargs) {
      ... blah blah
    },
    success: function(responseText) {
      // ... code to display flash message
      $.get(responseText, function(data) {       // NEW LINE
        if (typeof(window.history.pushState) == 'function') {
          window.history.pushState('html', 'sometext', $.cookie('current_url'));
          matchFiltersClass(window.location.pathname);
        } else {
          window.location.hash = '#!' + $.cookie('current_path');
          matchFiltersClass($.cookie('current_path'));
        }
        $('#main_content').html(responseText);
      });       // NEW LINE
    }
  });
  return false;
});