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curl/docs/cmdline-opts/hsts.md
Daniel Stenberg 6e494a2390
docs: more language cleanups 
- present tense
- avoid bad words

Closes #13003
2024-02-27 16:19:43 +01:00

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c SPDX-License-Identifier Long Arg Protocols Help Added Category Multi See-also Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl hsts <filename> HTTPS Enable HSTS with this cache file 7.74.0 http append
proto
--hsts cache.txt $URL

--hsts

This option enables HSTS for the transfer. If the filename points to an existing HSTS cache file, that is used. After a completed transfer, the cache is saved to the filename again if it has been modified.

If curl is told to use HTTP:// for a transfer involving a hostname that exists in the HSTS cache, it upgrades the transfer to use HTTPS. Each HSTS cache entry has an individual life time after which the upgrade is no longer performed.

Specify a "" filename (zero length) to avoid loading/saving and make curl just handle HSTS in memory.

If this option is used several times, curl loads contents from all the files but the last one is used for saving.