add sniffer utility

handler/relay/handler.go

@@ -16,6 +16,7 @@ import (
 	ctxvalue "github.com/go-gost/x/ctx"
 	limiter_util "github.com/go-gost/x/internal/util/limiter"
 	stats_util "github.com/go-gost/x/internal/util/stats"
+	tls_util "github.com/go-gost/x/internal/util/tls"
 	rate_limiter "github.com/go-gost/x/limiter/rate"
 	xrecorder "github.com/go-gost/x/recorder"
 	"github.com/go-gost/x/registry"
@@ -39,6 +40,7 @@ type relayHandler struct {
 	limiter  traffic.TrafficLimiter
 	cancel   context.CancelFunc
 	recorder recorder.RecorderObject
+	certPool tls_util.CertPool
 }
 
 func NewHandler(opts ...handler.Option) handler.Handler {
@@ -76,6 +78,10 @@ func (h *relayHandler) Init(md md.Metadata) (err error) {
 		}
 	}
 
+	if h.md.certificate != nil && h.md.privateKey != nil {
+		h.certPool = tls_util.NewMemoryCertPool()
+	}
+
 	return nil
 }