[bug #66029] UEFI HTTP Boot fails when web server is running behind HAProxy (2.06, probably older too)

[Dimitar Nikov]

URL:
  <https://savannah.gnu.org/bugs/?66029>

                 Summary: UEFI HTTP Boot fails when web server is running
behind HAProxy (2.06, probably older too)
                   Group: GNU GRUB
               Submitter: dnikov_20i
               Submitted: Fri 26 Jul 2024 09:56:54 AM UTC
                Category: Network
                Severity: Major
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Dimitar Nikov
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: other
                 Release: 
         Reproducibility: Every Time
         Planned Release: None


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Follow-up Comments:


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Date: Fri 26 Jul 2024 09:56:54 AM UTC By: Dimitar Nikov <dnikov_20i>
UEFI HTTP Boot fails when running a web server behind HAProxy (or other proxy)
to provide initial ramdisk and kernel.

HAproxy (and probably other proxies) is changing HTTP response headers to
lowercase. On the other hand, grub2 uses a case-sensitive comparison for the
Content-Lenght header leading to prematurely closing the connection and
leaving the client with a partially downloaded initrd/kernel.

A possible fix for this issue is to use a case-insensitive comparison for that
header (or any headers where necessary). 

A simple fix is available in the attached path file.
Thank you.

Best regards,
Dimitar Nikov









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File Attachments:


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Name: grub2-http-client-lowercase-headers.patch  Size: 631B
<https://file.savannah.gnu.org/file/grub2-http-client-lowercase-headers.patch?file_id=56312>

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