feat: Expose remote destination (udp proxy maybe domain of node)

transport/gun/transport.go

@@ -0,0 +1,20 @@
+package gun
+
+import (
+	"golang.org/x/net/http2"
+	"net"
+)
+
+type TransportWrap struct {
+	*http2.Transport
+	remoteAddr net.Addr
+	localAddr  net.Addr
+}
+
+func (tw *TransportWrap) RemoteAddr() net.Addr {
+	return tw.remoteAddr
+}
+
+func (tw *TransportWrap) LocalAddr() net.Addr {
+	return tw.localAddr
+}