Garyandmultica-agent
2835ee86cf
CI / test (pull_request) Failing after 2m40s
Add core traversal engine with iterative resolution from root servers: - referral.go: Referral struct with name, type, bailiwick, addresses, state - cache.go: Chained InfoCache with parent inheritance for NS and glue records - stack.go: LIFO stack with configurable max depth enforcement - response.go: Response classifier (referral, answer, CNAME follow, NODATA, NXDOMAIN, SERVFAIL) with child referral generation and probability splitting - traverser.go: Traverser orchestrates full traversal from root to leaf, following all referral branches, handling CNAME chains, and respecting max depth limits Add IterativeQuery/IterativeQueryWithExchange to dns package (RD=false queries). 57 new tests covering all acceptance criteria: traversal from root to leaf, comprehensive branch following, max depth enforcement, probability distribution, chained cache behavior, CNAME following, NXDOMAIN/SERVFAIL handling, context cancellation, and concurrent access. Co-authored-by: multica-agent <github@multica.ai>
79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package traverse
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import (
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"net"
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"strings"
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miekgdns "github.com/miekg/dns"
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)
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type ResolutionState int
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const (
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StateUnresolved ResolutionState = iota
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StateResolving
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StateResolved
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)
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func (s ResolutionState) String() string {
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switch s {
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case StateUnresolved:
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return "unresolved"
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case StateResolving:
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return "resolving"
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case StateResolved:
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return "resolved"
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default:
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return "unknown"
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}
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}
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type Referral struct {
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Name string
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Qtype uint16
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Qclass uint16
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Bailiwick string
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Addresses []net.IP
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State ResolutionState
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NSName string
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Parent *Referral
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Depth int
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Prob float64
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}
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func NewReferral(name string, qtype uint16, bailiwick string, depth int, prob float64, parent *Referral) *Referral {
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return &Referral{
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Name: miekgdns.Fqdn(strings.ToLower(name)),
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Qtype: qtype,
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Qclass: miekgdns.ClassINET,
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Bailiwick: miekgdns.Fqdn(strings.ToLower(bailiwick)),
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Depth: depth,
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Prob: prob,
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Parent: parent,
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State: StateUnresolved,
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}
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}
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func (r *Referral) InBailiwick(name string) bool {
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if r.Bailiwick == "" || r.Bailiwick == "." {
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return true
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}
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fqdn := miekgdns.Fqdn(strings.ToLower(name))
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return miekgdns.IsSubDomain(r.Bailiwick, fqdn)
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}
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func (r *Referral) HasAddresses() bool {
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return len(r.Addresses) > 0
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}
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func (r *Referral) SetAddresses(addrs []net.IP) {
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r.Addresses = addrs
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if len(addrs) > 0 {
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r.State = StateResolved
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} else {
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r.State = StateUnresolved
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}
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}
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