title: what could be causing this rails ioerror closed stream?
body: <p>I have a rails application, running in development mode ( with a sqlite database ). The application's purpose is to allow users to upload files through a java client. </p>
  
  <p>If a user wants to upload a folder, all the files inside it will be recursively uploaded. If a user wants to upload a file, the file will be uploaded normally. </p>
  
  <p>Here's the error I'm receiving :</p>
  
  <pre><code>
   IOError
  
      in UploadedFilesController#new
  
  closed stream
  </code></pre>
  
  <p>Here is the application trace :</p>
  
  <pre><code>
  /usr/lib/ruby/1.8/tempfile.rb:167:in `close'
  /usr/lib/ruby/1.8/tempfile.rb:167:in `callback'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `call'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `method_added'
  app/controllers/uploaded_files_controller.rb:114
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_without_new_constant_marking'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_file'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:202:in `load_file'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:94:in `require_or_load'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:248:in `load_missing_constant'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in `const_missing'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/inflector.rb:257:in `constantize'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/string/inflections.rb:148:in `constantize'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/routing.rb:1426:in `recognize'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:78:in `service'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/commands/servers/webrick.rb:66
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39
  </code></pre>
  
  <p>Here is the framework trace :</p>
  
  <pre><code>
  /usr/lib/ruby/1.8/tempfile.rb:167:in `close'
  /usr/lib/ruby/1.8/tempfile.rb:167:in `callback'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `call'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `method_added'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:170:in `handle_request'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:112:in `handle_dispatch'
  /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
  /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
  /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
  /usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:82:in `start'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:62:in `dispatch'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
  script/server:3
  </code></pre>
  
  <p>Here is the full trace :</p>
  
  <pre><code>
  /usr/lib/ruby/1.8/tempfile.rb:167:in `close'
  /usr/lib/ruby/1.8/tempfile.rb:167:in `callback'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `call'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/vendor/builder-2.1.2/blankslate.rb:85:in `method_added'
  app/controllers/uploaded_files_controller.rb:114
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_without_new_constant_marking'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_file'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:202:in `load_file'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:94:in `require_or_load'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:248:in `load_missing_constant'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in `const_missing'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/inflector.rb:257:in `constantize'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/string/inflections.rb:148:in `constantize'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/routing.rb:1426:in `recognize'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:170:in `handle_request'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi'
  /var/lib/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:112:in `handle_dispatch'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:78:in `service'
  /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
  /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
  /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
  /usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
  /usr/lib/ruby/1.8/webrick/server.rb:82:in `start'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:62:in `dispatch'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/commands/servers/webrick.rb:66
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
  /var/lib/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
  /var/lib/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
  script/server:3
  </code></pre>
  
  <p>I have no clue why this happens ... the client gets to upload about 15-30 files ( from a folder, through the java client ) before this error appears. I am running Rails 2.0.2 . Could the fact that I'm running in development mode using sqlite as a database cause this ? Any help would be greatly appreciated ! </p>
  
  <p>Thanks guys !</p>