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DOC: Describe reuse safe for HOL handling

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Explain the special case of server connections using a protocol subject
to HOL on http-reuse safe mode.
This commit is contained in:
Amaury Denoyelle 2020-10-14 18:17:12 +02:00 committed by Christopher Faulet
parent 46f041d7f8
commit 2717965387
1 changed files with 6 additions and 1 deletions
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7
doc/configuration.txt
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@ -6611,7 +6611,12 @@ http-reuse { never | safe | aggressive | always }
closes the connection when the request is being sent, the closes the connection when the request is being sent, the
browser can decide to silently retry it. Since it is exactly browser can decide to silently retry it. Since it is exactly
equivalent to regular keep-alive, there should be no side equivalent to regular keep-alive, there should be no side
effects. effects. There is also a special handling for the connections
using protocols subject to Head-of-line blocking (backend with
h2 or fcgi). In this case, when at least one stream is
processed, the used connection is reserved to handle streams
of the same session. When no more streams are processed, the
connection is released and can be reused.
- "aggressive" : this mode may be useful in webservices environments where - "aggressive" : this mode may be useful in webservices environments where
all servers are not necessarily known and where it would be all servers are not necessarily known and where it would be