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Posted to issues@commons.apache.org by "abiral shrestha (Jira)" <ji...@apache.org> on 2019/10/15 03:46:00 UTC
[jira] [Commented] (VFS-560) File can't be downloaded if HTTP HEAD
on base url fails
[ https://issues.apache.org/jira/browse/VFS-560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16951538#comment-16951538 ]
abiral shrestha commented on VFS-560:
-------------------------------------
Hi [~b.eckenfels]
I am facing similar issue despite the base URL responding correctly.
Example:
Url: [http://server1.com/files/2015/image.jpg]
1. *Jakarta Commons-HttpClient/3.1* sends HEAD request to [http://server1.com/] (not [http://server1.com/files/2015/image.jpg])
2. Server responds to the HEAD request.
3. commons-vfs sends HEAD request to [http://server1.com/files/2015/image.jpg]
4. GET request is never received.
5. image.jpg is not downloaded
I can not upgrade to the fixed version mentioned above due to some reason.
Please do let me know if I can modify response from [http://server1.com/|http://server1.com/files/2015/image.jpg] in such a way that GET request is send after HEAD.
Thanks and regards,
> File can't be downloaded if HTTP HEAD on base url fails
> -------------------------------------------------------
>
> Key: VFS-560
> URL: https://issues.apache.org/jira/browse/VFS-560
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.0
> Reporter: Patrick GH
> Assignee: Bernd Eckenfels
> Priority: Major
> Fix For: 2.1
>
>
> When i try to download a File via HTTP a HEAD-Request on the base url is executed before the actual download. In my case the result is a redirect (HTTP 302) to another server. This server is not available due to firewall restrictions and so the following HEAD request fails. The actual GET request to retrieve the file is never performed.
> Example:
> Url: http://server1.com/files/2015/image.jpg
> 1. commons-vfs sends HEAD request to http://server1.com/ (not http://server1.com/files/2015/image.jpg)
> 2. Server returns HTTP 302 with redirect to http://server2.com/
> 3. commons-vfs sends HEAD request to http://server2.com/
> 4. Request fails because server2.com is not available (firewall)
> 5. image.jpg is not downloaded
> Why is this HEAD request on the base url necessary? The file can be downloaded directly without problems.
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