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Fix DNS cache not working when domain strategy is set

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The cache lookup was performed before rule matching, using the caller's
strategy (usually AsIS/0) instead of the resolved strategy. This caused
cache misses when ipv4_only was configured globally but the cache lookup
expected both A and AAAA records.

Remove LookupCache and ExchangeCache from Router, as the cache checks
inside client.Lookup and client.Exchange already handle caching correctly
after rule matching with the proper strategy and transport.
This commit is contained in:
世界
2025-12-21 16:56:26 +08:00
parent f0cd3422c1
commit 1ebff74c21
3 changed files with 82 additions and 156 deletions
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2
adapter/dns.go
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@@ -27,8 +27,6 @@ type DNSClient interface {
Start()
Exchange(ctx context.Context, transport DNSTransport, message *dns.Msg, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) (*dns.Msg, error)
Lookup(ctx context.Context, transport DNSTransport, domain string, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error)
LookupCache(domain string, strategy C.DomainStrategy) ([]netip.Addr, bool)
ExchangeCache(ctx context.Context, message *dns.Msg) (*dns.Msg, bool)
ClearCache()
}