Tunnel no longer embeds transport

tunnel/tunnel.go

@@ -5,11 +5,33 @@ import (
 	"github.com/micro/go-micro/transport"
 )
 
+// Status is tunnel status
+type Status int
+
+const (
+	// Connected means the tunnel is alive
+	Connected Status = iota
+	// Closed meands the tunnel has been disconnected
+	Closed
+)
+
 // Tunnel creates a p2p network tunnel.
 type Tunnel interface {
-	transport.Transport
+	// Id returns tunnel id
+	Id() string
+	// Address returns tunnel address
+	Address() string
+	// Tramsport returns tunnel transport
+	Transport() transport.Transport
 	// Connect connects the tunnel
 	Connect() error
 	// Close closes the tunnel
 	Close() error
+	// Status returns tunnel status
+	Status() Status
+}
+
+// NewTunnel creates a new tunnel on top of a link
+func NewTunnel(opts ...Option) Tunnel {
+	return newTunnel(opts...)
 }