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[Bug Watch Updater <1031750@xxxxxxxxxxxxxxxxxx>]

** Changed in: firefox
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1031750

Title:
  XHR connections aren't closed properly

Status in Mozilla Firefox:
  Invalid
Status in firefox package in Ubuntu:
  Confirmed

Bug description:
  In Firefox 14, when I abort an XHR connection, it seems like the
  connection doesn't get closed properly at the system level, or at
  least not as quickly as before. Firebug shows the connection as
  aborted, but the actual network connection seems to still be open.

  I'm attaching a sample web server that keeps the connection open (like
  a long poll request) and a sample HTML file that creates XHR
  connections and aborts them after a seconds. Using lsof (lsof -i |
  grep localhost | grep firefox | wc --line) I can see that the number
  of connections just keeps growing, until Firefox's connection limit is
  reached.

  This causes a problem for automatic testing, which quickly navigates
  through different pages. Since each page opens up a new connection
  that doesn't get closed, we run into a situation where the tests
  starts failing, since it can't connect to the server anymore.

  I started seeing this behavior in Firefox 14 (Ubuntu version
  14.0.1+build1-0ubuntu0.12.04.1) and I see it 14.0.1 downloaded from
  mozilla.org as well. If I downgrade to Firefox 11 (Ubuntu version
  11.0+build1-0ubuntu4) the number of open connections stay at 1 when
  running the attached test scripts.

  To reproduce the problem, run "python long_poll.py" to start a web
  server. Then open abort_request.html in Firefox, which will open an
  XHR connection and abort it once every second. While
  abort_request.html is running look at the output of "lsof -i | grep
  localhost | grep firefox | wc --line". In Firefox 11 it stays around 1
  and in Firefox 14 it goes up to 15, which is my configured connection
  limit (network.http.max-connections-per-server).

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: firefox 14.0.1+build1-0ubuntu0.12.04.1
  ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
  Uname: Linux 3.2.0-27-generic x86_64
  AddonCompatCheckDisabled: False
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu11
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bjorn      3512 F.... pulseaudio
  BuildID: 20120713224749
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 48'
     Mixer name	: 'Conexant CX20561 (Hermosa)'
     Components	: 'HDA:14f15051,17aa20ff,00100000'
     Controls      : 21
     Simple ctrls  : 13
  Card29.Amixer.info:
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT21WW-1.03'
     Mixer name	: 'ThinkPad EC 7XHT21WW-1.03'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
  Card29.Amixer.values:
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Channel: Unavailable
  Date: Wed Aug  1 15:18:25 2012
  ForcedLayersAccel: False
  PrefSources: prefs.js
  ProcEnviron:
   LC_TIME=en_US.UTF-8
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Profiles: Profile0 (Default) - LastVersion=11.0/20120410121533 (Out of date)
  RelatedPackageVersions:
   google-talkplugin 3.2.4.0-1
   rhythmbox-mozilla 2.96-0ubuntu4.1
   adobe-flashplugin 11.2.202.236-0precise1
   totem-mozilla     3.0.1-0ubuntu21
   sun-java6-bin     6.26-1oneiric1
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  UpgradeStatus: Upgraded to precise on 2011-12-16 (229 days ago)
  UserAsoundrc:
   pcm.btheadset {
           type bluetooth
           device 00:0D:3C:6B:34:39
           profile "auto"
   }
  WpaSupplicantLog:
   
  dmi.bios.date: 12/19/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET38WW (2.02 )
  dmi.board.name: 74695RG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6DET38WW(2.02):bd12/19/2008:svnLENOVO:pn74695RG:pvrThinkPadX200s:rvnLENOVO:rn74695RG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 74695RG
  dmi.product.version: ThinkPad X200s
  dmi.sys.vendor: LENOVO

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