[JENKINS-73942] Downloading tgz artifacts in Firefox is broken (regression in 2.463)

[jenkins-infra-bot]

When downloading tgz artifacts the downloaded file is zipped an additional time. Firefox does not unzip it when downloading it.

This is just about the same as https://issues.jenkins.io/browse/JENKINS-73381 it just affects tgz instead of tar.gz files now.

 

You can reproduce the issue with the attached job which creates a example.tgz and example.tar.gz artifact. Download both using Firefox. The files will have different sizes.

 

It worked with 2.462.2 and is broken in 2.462.3

In 2.463 and 2.464 both *.tgz and *.tar.gz were affected.

Starting with 2.466 only *.tgz is affected.

I believe it's due to the mimetype 

tgz=application/x-gtar

in the winstone fix for tar.gz

https://github.com/jenkinsci/winstone/pull/397/files

 

---

Originally reported by stefan_vk, imported from: Downloading tgz artifacts in Firefox is broken (regression in 2.463)

• assignee: basil
• status: Closed
• priority: Minor
• component(s): core
• label(s): 2.479.3-fixed, regression
• resolution: Fixed
• resolved: 2024-12-17T19:49:21+00:00
• votes: 0
• watchers: 4
• imported: 2025-11-24

Raw content of original issue

When downloading tgz artifacts the downloaded file is zipped an additional time. Firefox does not unzip it when downloading it.

This is just about the same as https://issues.jenkins.io/browse/JENKINS-73381 it just affects tgz instead of tar.gz files now.

 

You can reproduce the issue with the attached job which creates a example.tgz and example.tar.gz artifact. Download both using Firefox. The files will have different sizes.

 

It worked with 2.462.2 and is broken in 2.462.3

In 2.463 and 2.464 both *.tgz and *.tar.gz were affected.

Starting with 2.466 only *.tgz is affected.

I believe it's due to the mimetype 

tgz=application/x-gtar

in the winstone fix for tar.gz

https://github.com/jenkinsci/winstone/pull/397/files

 

environment

Jenkins 2.480<br/>
Firefox 128.3.0esr<br/>
Linux

1 attachment

• config.xml

[jenkins-infra-bot]

• Remote link associated with this issue:

  • jetty/jetty.project#​12397

[jenkins-infra-bot]

basil:

• Original comment link
• Raw content of original comment:

  I was able to reproduce the issue in Jetty 12.0.14 outside of Jenkins by serving a directory of static files with the Jetty gzip module enabled. This is not a Jenkins bug. Please report the issue to the Jetty developers on their issue tracking system (ITS), and when the issue is fixed upstream we will upgrade to the new release.
  

I was able to reproduce the issue in Jetty 12.0.14 outside of Jenkins by serving a directory of static files with the Jetty gzip module enabled. This is not a Jenkins bug. Please report the issue to the Jetty developers on their issue tracking system (ITS), and when the issue is fixed upstream we will upgrade to the new release.

[jenkins-infra-bot]

basil:

• Original comment link
• Raw content of original comment:

  This has been fixed upstream in Issue #12397 - Add more default excludes to GzipHandler. jetty/jetty.project#12414 toward the forthcoming release of Jetty 12.0.15. We will upgrade to that version of Jetty when it is available. In the meantime Winstone users can run Jenkins with --compression none to disable the Jetty GZipHandler.
  

This has been fixed upstream in jetty/jetty.project#12414 toward the forthcoming release of Jetty 12.0.15. We will upgrade to that version of Jetty when it is available. In the meantime Winstone users can run Jenkins with --compression none to disable the Jetty GZipHandler.

[jenkins-infra-bot]

stefan_vk:

• Original comment link
• Raw content of original comment:

  Thank you, basil for not only reporting the issue to upstream but also for the workaround!
  
  The workaround does work for me
  
  docker run -v ./jenkins_home:/var/jenkins_home --network=host jenkins/jenkins:2.462.3 --compression=none 
  
  

Thank you, basil for not only reporting the issue to upstream but also for the workaround!

The workaround does work for me

docker run -v ./jenkins_home:/var/jenkins_home --network=host jenkins/jenkins:2.462.3 --compression=none