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In domain-based routing and policy rules, suffix matching on hostnames is often easier to express as a prefix match on reversed labels. A dedicated converter makes this convenient with existing fetches and matchers. This also has a performance benefit for large maps. Prefix string matches use the prefix-tree index (PAT_MATCH_BEG with pat_idx_tree_pfx), while end matches use the string-list index (PAT_MATCH_END with pat_idx_list_str), so reversed-label lookups can avoid linear suffix scans. This patch adds "reverse_dom", a string converter that reverses domain labels, ignores one optional trailing dot on input, and rejects empty labels. It intentionally leaves trailing-dot handling to the caller so configurations can choose between exact matches, subdomain-only matches, or an explicit dotted form built with "concat(.)" for prefix lookups. Examples: example.com -> com.example mail.example.com -> com.example.mail The documentation is updated and a reg-test covers the converter itself, the explicit dotted form for "map_beg()", and the subdomain-only "-m beg" case. |
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| .. | ||
| design-thoughts | ||
| internals | ||
| lua-api | ||
| 51Degrees-device-detection.txt | ||
| acl.fig | ||
| coding-style.txt | ||
| configuration.txt | ||
| cookie-options.txt | ||
| DeviceAtlas-device-detection.txt | ||
| gpl.txt | ||
| haproxy.1 | ||
| HAProxyCommunityEdition_60px.png | ||
| haterm.txt | ||
| intro.txt | ||
| lgpl.txt | ||
| linux-syn-cookies.txt | ||
| lua.txt | ||
| management.txt | ||
| netscaler-client-ip-insertion-protocol.txt | ||
| network-namespaces.txt | ||
| peers-v2.0.txt | ||
| peers.txt | ||
| proxy-protocol.txt | ||
| queuing.fig | ||
| regression-testing.txt | ||
| seamless_reload.txt | ||
| SOCKS4.protocol.txt | ||
| SPOE.txt | ||
| WURFL-device-detection.txt | ||
