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chore: Disable cache for RCode client

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This commit is contained in:
H1JK
2023-06-11 20:58:51 +08:00
parent c7de0e0253
commit 54337ecdf3
3 changed files with 19 additions and 10 deletions
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15
dns/resolver.go
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@ -182,6 +182,7 @@ func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.M
fn := func() (result any, err error) {
ctx, cancel := context.WithTimeout(context.Background(), resolver.DefaultDNSTimeout) // reset timeout in singleflight
defer cancel()
cache := false
defer func() {
if err != nil {
@ -192,7 +193,9 @@ func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.M
msg := result.(*D.Msg)
putMsgToCache(r.lruCache, q.String(), msg)
if cache {
putMsgToCache(r.lruCache, q.String(), msg)
}
}()
isIPReq := isIPRequest(q)
@ -201,9 +204,11 @@ func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.M
}
if matched := r.matchPolicy(m); len(matched) != 0 {
return r.batchExchange(ctx, matched, m)
result, cache, err = r.batchExchange(ctx, matched, m)
return
}
return r.batchExchange(ctx, r.main, m)
result, cache, err = r.batchExchange(ctx, r.main, m)
return
}
ch := r.group.DoChan(q.String(), fn)
@ -244,7 +249,7 @@ func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.M
return
}
func (r *Resolver) batchExchange(ctx context.Context, clients []dnsClient, m *D.Msg) (msg *D.Msg, err error) {
func (r *Resolver) batchExchange(ctx context.Context, clients []dnsClient, m *D.Msg) (msg *D.Msg, cache bool, err error) {
ctx, cancel := context.WithTimeout(ctx, resolver.DefaultDNSTimeout)
defer cancel()
@ -371,7 +376,7 @@ func (r *Resolver) lookupIP(ctx context.Context, host string, dnsType uint16) (i
func (r *Resolver) asyncExchange(ctx context.Context, client []dnsClient, msg *D.Msg) <-chan *result {
ch := make(chan *result, 1)
go func() {
res, err := r.batchExchange(ctx, client, msg)
res, _, err := r.batchExchange(ctx, client, msg)
ch <- &result{Msg: res, Error: err}
}()
return ch