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curl: add write-out variable 'tls_earlydata'

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Add the write-out variable 'tls_earlydata' to inspect the amount of
TLSv1.3 early data that had been sent.

Closes #15956
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Stefan Eissing 2025-01-09 15:28:22 +01:00 • committed by Daniel Stenberg
parent 952770dc65
commit 54c07fd6c5
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6 changed files with 14 additions and 2 deletions
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3
docs/cmdline-opts/tls-earlydata.md
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@ -38,5 +38,8 @@ for you, it is probably not a good idea to use early data for it. curl
cannot deduce what the security implications of your requests actually
are and make this decision for you.
The amount of early data sent can be inspected by using the `--write-out`
variable `tls_earlydata`.
**WARNING**: this option has security implications. See above for more
details.

6
docs/cmdline-opts/write-out.md
View file

@ -262,6 +262,12 @@ the result.
## `time_total`
The total time, in seconds, that the full operation lasted.
## `tls_earlydata`
The amount of bytes that were sent as TLSv1.3 early data. This is 0
if this TLS feature was not used and negative if the data sent had
been rejected by the server. The use of early data is enabled via
the command line option `--tls-earlydata`. (Added in 8.12.0)
## `url`
The URL that was fetched. (Added in 7.75.0)