- Add internal/fingerprint package with Fingerprinter type
- Sends version.bind CHAOS TXT query to each server
- Caches results per IP to avoid redundant queries
- Concurrent batch fingerprinting via FingerprintAll
- Gracefully handles non-responding servers (returns empty string)
- Injectable exchange function for testability
- Wire fingerprinting into RunTraversal
- Triggered when both ShowVersions and ShowServers are enabled
- Collects unique server IPs from traversal results
- Stores results in output.Config.Fingerprints before WriteSummary
- Display versions in text output (writeServers)
- Appends version string after IP when ShowVersions is true
- No output change when version is unknown
- Include version in JSON output (jsonServer.Version field)
- omitempty: field absent when version is unknown
- Add comprehensive fingerprint tests (11 test cases)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: multica-agent <github@multica.ai>
Add text and JSON formatters with real-time progress via traverser hooks,
summary statistics, and CLI integration for --show-* and --json flags.
Co-authored-by: multica-agent <github@multica.ai>
Add Resolver interface, BasicResolver, and CachingResolver to internal/dns.
CachingResolver wraps any Resolver with an in-memory cache keyed by
(server IP, name, type, class). Cache entries respect DNS TTL from
responses, falling back to a configurable default TTL. Thread-safe
using sync.RWMutex. Includes Len, Clear, and PurgeExpired methods
for cache management.
Closes HAN-379 (Phase 2.2).
Co-authored-by: multica-agent <github@multica.ai>
Add RootServer struct and DiscoverRoots function that queries the local
resolver for NS records of the root zone, resolves each root name to
A/AAAA addresses, and returns a list of RootServer structs.
Supports:
- Default: discovers a single root server from local resolver
- --root-server override to target a specific root server
- --all-root-servers to discover all 13 root servers
- --root-aaaa flag to include IPv6 addresses
Includes unit tests for all helper functions and integration tests
that skip gracefully when no resolver is available.
Co-authored-by: multica-agent <github@multica.ai>
multica-agent
gary