curl/docs/cmdline-opts/alt-svc.md

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c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: alt-svc Arg: Protocols: HTTPS Help: Enable alt-svc with this cache file Added: 7.64.1 Category: http Multi: append See-also:

• resolve
• connect-to Example:
• --alt-svc svc.txt $URL ---

--alt-svc

Enable the alt-svc parser. If the filename points to an existing alt-svc cache file, that gets used. After a completed transfer, the cache is saved to the filename again if it has been modified.

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

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