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From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug debuginfod/27982] New: debuginfod client maximum-transfer-size
 and -time parameters
Date: Mon, 14 Jun 2021 21:16:10 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27982

            Bug ID: 27982
           Summary: debuginfod client maximum-transfer-size and -time
                    parameters
           Product: elfutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: debuginfod
          Assignee: unassigned at sourceware dot org
          Reporter: fche at redhat dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

DEBUGINFOD_TIMEOUT is a good way to catch servers that are too slow to *sta=
rt*
transmitting a file.  But we have no way of limiting total download time or
space.  A user might prefer to have his debugger fetch only quick & small
files, and make do without the bigger ones.  Some transitive dependencies of
e.g. gnome programs are huge: 3GB of LLVM debuginfo, 1GB of webkitgtk, etc.
etc.

We could add a $DEBUGINFOD_MAXSIZE and/or $DEBUGINFOD_MAXTIME parameters to=
 the
client side environment variable suite.  The MAXSIZE one could be communica=
ted
to the server in the query as an extra header, so it can quickly respond wi=
th
some HTTP error code (since it can generally find out the destination file
sizes prior to actually decompressing them); it can also be enforced during
download, as soon as a Content-Length: header is received.  The MAXTIME one
could be added as a debuginfod-client.c main loop parameter.

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