add tunnel feature for relay

registry/ingress.go

@@ -0,0 +1,37 @@
+package registry
+
+import (
+	"github.com/go-gost/core/ingress"
+)
+
+type ingressRegistry struct {
+	registry[ingress.Ingress]
+}
+
+func (r *ingressRegistry) Register(name string, v ingress.Ingress) error {
+	return r.registry.Register(name, v)
+}
+
+func (r *ingressRegistry) Get(name string) ingress.Ingress {
+	if name != "" {
+		return &ingressWrapper{name: name, r: r}
+	}
+	return nil
+}
+
+func (r *ingressRegistry) get(name string) ingress.Ingress {
+	return r.registry.Get(name)
+}
+
+type ingressWrapper struct {
+	name string
+	r    *ingressRegistry
+}
+
+func (w *ingressWrapper) Get(host string) string {
+	v := w.r.get(w.name)
+	if v == nil {
+		return ""
+	}
+	return v.Get(host)
+}