rack middleware dump of env variable. See: https://github.com/tompesman/rack-timeout/blob/master/lib/rack/timeout.rb#L23

gistfile1.txt

{
"REMOTE_ADDR"=>"10.127.133.34/ip-10-127-133-34.eu-west-1.compute.internal", 
"REQUEST_METHOD"=>"POST", 
"REQUEST_PATH"=>"/api/v1/games/2404105/move.json", 
"PATH_INFO"=>"/api/v1/games/2404105/move.json", 
"REQUEST_URI"=>"/api/v1/games/2404105/move.json", 
"SERVER_PROTOCOL"=>"HTTP/1.1", 
"HTTP_VERSION"=>"HTTP/1.1", 
"HTTP_X_FORWARDED_PROTO"=>"http", 
"HTTP_X_FORWARDED_PORT"=>"80", 
"HTTP_X_FORWARDED_FOR"=>"XXXXX", 
"HTTP_OS"=>"android", 
"HTTP_HOST"=>"api.nummi-app.com", 
"CONTENT_TYPE"=>"application/x-www-form-urlencoded", 
"CONTENT_LENGTH"=>"1351", 
"HTTP_AUTH_TOKEN"=>"xxxxxxxxxxxxxxxxxxxx", 
"HTTP_ACCEPT_ENCODING"=>"gzip", 
"HTTP_CONNECTION"=>"close", 
"HTTP_X_HEROKU_QUEUE_WAIT_TIME"=>"0", 
"HTTP_X_HEROKU_QUEUE_DEPTH"=>"0", 
"HTTP_X_HEROKU_DYNOS_IN_USE"=>"1", 
"HTTP_X_REQUEST_START"=>"1362905244411", 
"rack.url_scheme"=>"http", 
"SERVER_NAME"=>"hostname", 
"SERVER_PORT"=>"80", 
"QUERY_STRING"=>"", 
"rack.input"=>#<Unicorn::TeeInput:0x00000004dedba0 @len=1351, @chunked=false, @socket=#<Kgio::Socket:fd 9>, @parser=#<Unicorn::HttpParser:0x000000016463c8>, @buf="", @rbuf="", @bytes_read=0, @tmp=#<StringIO:0x00000004dedb00>>, 
"rack.errors"=>#<IO:<STDERR>>, 
"rack.multiprocess"=>true, 
"rack.multithread"=>false, 
"rack.run_once"=>false, 
"rack.version"=>[1, 1], 
"SCRIPT_NAME"=>"", 
"SERVER_SOFTWARE"=>"Unicorn 4.6.2", 
"rack.logger"=>#<Logger:0x0000000106c768 @progname=nil, @level=0, @default_formatter=#<Logger::Formatter:0x0000000106c740 @datetime_format=nil>, @formatter=nil, @logdev=#<Logger::LogDevice:0x0000000106c6c8 @shift_size=nil, @shift_age=nil, @filename=nil, @dev=#<IO:<STDERR>>, @mutex=#<Logger::LogDevice::LogDeviceMutex:0x0000000106c678 @mon_owner=nil, @mon_count=0, @mon_mutex=#<Mutex:0x0000000106c628>>>>, 
"ORIGINAL_FULLPATH"=>"/api/v1/games/2404105/move.json", 
"action_dispatch.routes"=>#<ActionDispatch::Routing::RouteSet:0x000000026b7298>, 
"action_dispatch.parameter_filter"=>[:password], 
"action_dispatch.secret_token"=>"", 
"action_dispatch.show_exceptions"=>true, 
"action_dispatch.show_detailed_exceptions"=>false, 
"action_dispatch.logger"=>#<ActiveSupport::TaggedLogging:0x0000000452e2a8 @logger=#<Logger:0x000000041613a0 @progname=nil, @level=1, @default_formatter=#<Logger::Formatter:0x00000004161350 @datetime_format=nil>, @formatter=#<Logger::SimpleFormatter:0x00000004161260 @datetime_format=nil>, @logdev=#<Logger::LogDevice:0x00000004161300 @shift_size=nil, @shift_age=nil, @filename=nil, @dev=#<IO:<STDOUT>>, @mutex=#<Logger::LogDevice::LogDeviceMutex:0x000000041612d8 @mon_owner=nil, @mon_count=0, @mon_mutex=#<Mutex:0x00000004161288>>>>>, 
"action_dispatch.backtrace_cleaner"=>#<Rails::BacktraceCleaner:0x00000004ef6d08 @filters=[#<Proc:0x00000004ef8810@/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/backtrace_cleaner.rb:10>, #<Proc:0x00000004ef8838@/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/backtrace_cleaner.rb:11>, #<Proc:0x00000004ef8978@/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/backtrace_cleaner.rb:12>, #<Proc:0x00000004edfc70@/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/backtrace_cleaner.rb:26>], @silencers=[#<Proc:0x00000004ee04b8@/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/backtrace_cleaner.rb:15>]>, 
"rack.request.form_input"=>#<Unicorn::TeeInput:0x00000004dedba0 @len=1351, @chunked=false, @socket=#<Kgio::Socket:fd 9>, @parser=#<Unicorn::HttpParser:0x000000016463c8>, @buf="", @rbuf="", @bytes_read=0, @tmp=#<StringIO:0x00000004dedb00>>, 
"rack.request.form_hash"=>nil
}