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QUIC QLOG: Clarify filter docs

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Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22037)
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Hugo Landau 2024-01-22 14:41:44 +00:00
parent 9dcad79795
commit 613917ea0c
1 changed files with 15 additions and 2 deletions
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doc/designs/quic-design/qlog.md
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@ -98,10 +98,10 @@ wildcard = "*"
name = 1*(ALPHA / DIGIT / "_" / "-")
```
Here is an example filter:
Here is a (somewhat nonsensical) example filter:
```text
-quic:version_information quic:packet_sent -* +*
+* -quic:version_information -* quic:packet_sent
```
The syntax works as follows:
@ -118,3 +118,16 @@ The syntax works as follows:
- `-quic:version_information` disables a specific event type.
- Partial wildcard matches are not supported at this time.
Each term is applied in sequence, therefore later items in the filter override
earlier items. In the example above, for example, all events are enabled, then
the `quic:version_information` event is disabled, then all events are disabled,
then the `quic:packet_sent` event is reenabled.
Some examples of more normal filters include:
- `*` (or `+*`): enable all events
- `quic:version_information quic:packet_sent`: enable some events explicitly
- `* -quic:version_information`: enable all events except certain events