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HSTS: cap the list at 1,000 entries

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Avoid never-ending growth.

When adding more entries, it now deletes the first entry in the list,
which is the oldest added entry still held in memory. I decided to avoid
a Least Recently Used concept as I suspect with a list with this many
entries most entries have not been used, and we don't save the timestamp
of recent use anyway.

The net effect might (no matter what) be that the removed entry might
feel a bit "random" in the eyes of the user.

Verify with test 1674

Ref #21183
Closes #21190
This commit is contained in:
Daniel Stenberg 2026-04-01 10:24:06 +02:00
parent 4f3a0ef90d
commit 03a792b186
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6 changed files with 139 additions and 2 deletions
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<?xml version="1.0" encoding="US-ASCII"?>
<testcase>
<info>
<keywords>
unittest
HSTS
</keywords>
</info>
<client>
<features>
unittest
HSTS
</features>
# This date is exactly "20190124 22:34:21" UTC
<setenv>
CURL_TIME=1548369261
</setenv>
<name>
HSTS load more than 1,000 entries from file
</name>
# test 1674 renders the input file itself, then reads it
<command>
%LOGDIR/hsts%TESTNUMBER
</command>
</client>
<verify>
<stdout>
Number of entries: 1000
</stdout>
<limits>
Allocations: 1100
</limits>
</verify>
</testcase>