mirror of
https://github.com/haproxy/haproxy.git
synced 2026-11-04 14:59:44 +00:00
Tim Duesterhus
60d69aacea
This patch extends the existing support for printing captured header fields
(`-hdr`) by a new filter (`-hdr-match`) that only processes lines where the
given capture has a specific value. It works together with all existing filters
and output formats.
The full syntax is `-hdr-match <block>:<field>=<value>`, where <block> and <field>
work just like `-hdr` and `<value>` is an exact string match:
Example:
capture request header a len 50
capture request header b len 50
capture request header c len 50
capture response header d len 50
capture response header e len 50
capture response header f len 50
- `-hdr-match 1:1=foo` will filter for requests where `a` is equal to "foo".
- `-hdr-match "2:3=foo bar"` will filter for requests where `f` is equal to
"foo bar".
The chosen syntax leaves future scope for allowing `<block>:<field>*<value>`
for substring matches and `<block>:<field>^<value>` for prefix matches without
introducing a breaking change.