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DOC: compression: add some details and clean up the formatting

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commit 82fe75c1 provided useful details in its log message. We should report
part of them in the documentation to know which algorithms are available.

This patch also makes some formatting cleanups (including a line outside the
compression scope, which exceeded 80 chars).
This commit is contained in:
Cyril Bont 2012-11-11 13:38:27 +01:00 committed by Willy Tarreau
parent 6162c43a0a
commit 316a8cfbc9
1 changed files with 25 additions and 7 deletions
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32
doc/configuration.txt
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@ -1815,16 +1815,34 @@ clitimeout <timeout> (deprecated)
See also : "timeout client", "timeout http-request", "timeout server", and
"srvtimeout".
compression algo [ gzip ] ...
compression type ...
compression algo <algorithm> ...
compression type <mime type> ...
compression offload
Enable HTTP compression.
May be used in sections : defaults | frontend | listen | backend
yes | yes | yes | yes
Arguments :
algo is followed by the list of supported compression algorithms.
type is followed by the list of MIME types that will be compressed.
offload makes haproxy work as a compression offloader only (see notes).
algo is followed by the list of supported compression algorithms.
type is followed by the list of MIME types that will be compressed.
offload makes haproxy work as a compression offloader only (see notes).
The currently supported algorithms are :
identity this is mostly for debugging, and it was useful for developping
the compression feature. Identity does not apply any change on
data.
gzip applies gzip compression. This setting is only available when
support for zlib was built in.
deflate same as gzip, but with deflate algorithm and zlib format.
Note that this algorithm has ambiguous support on many browsers
and no support at all from recent ones. It is strongly
recommended not to use it for anything else than experimentation.
This setting is only available when support for zlib was built
in.
Compression will be activated depending of the Accept-Encoding request
header. With identity, it does not take care of that header.
The "offload" setting makes haproxy remove the Accept-Encoding header to
prevent backend servers from compressing responses. It is strongly
@ -9359,8 +9377,8 @@ The list of currently supported pattern fetch functions is the following :
haproxy -vv). See also the "npn" bind keyword.
ssl_fc_protocol
Returns the name of the used protocol when the incoming connection
was made over an SSL/TLS transport layer.
Returns the name of the used protocol when the incoming
connection was made over an SSL/TLS transport layer.
ssl_fc_session_id
Returns the SSL ID of the front connection when the incoming