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Improve DNS caching

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This commit is contained in:
世界
2023-04-26 04:53:25 +08:00
parent f949ddc0ab
commit 6f1b258501
9 changed files with 55 additions and 30 deletions
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6
outbound/dns.go
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@@ -104,18 +104,18 @@ func (d *DNS) handleConnection(ctx context.Context, conn net.Conn, metadata adap
func (d *DNS) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
var reader N.PacketReader = conn
var counters []N.CountFunc
var cachedBuffer []*N.PacketBuffer
var cachedPackets []*N.PacketBuffer
for {
reader, counters = N.UnwrapCountPacketReader(reader, counters)
if cachedReader, isCached := reader.(N.CachedPacketReader); isCached {
packet := cachedReader.ReadCachedPacket()
if packet != nil {
cachedBuffer = append([]*N.PacketBuffer{packet}, cachedBuffer...)
cachedPackets = append(cachedPackets, packet)
continue
}
}
if readWaiter, created := bufio.CreatePacketReadWaiter(reader); created {
return d.newPacketConnection(ctx, conn, readWaiter, counters, cachedBuffer, metadata)
return d.newPacketConnection(ctx, conn, readWaiter, counters, cachedPackets, metadata)
}
break
}