Maint: better openvpn loop interface composition

internal/openvpn/portforwarded.go

@@ -7,13 +7,20 @@ import (
 	"os"
 	"strings"
 
+	"github.com/qdm12/gluetun/internal/openvpn/state"
 	"github.com/qdm12/gluetun/internal/provider"
 )
 
+type PortForwadedGetter = state.PortForwardedGetter
+
 func (l *looper) GetPortForwarded() (port uint16) {
 	return l.state.GetPortForwarded()
 }
 
+type PortForwader interface {
+	PortForward(vpnGatewayIP net.IP)
+}
+
 func (l *looper) PortForward(vpnGateway net.IP) { l.portForwardSignals <- vpnGateway }
 
 // portForward is a blocking operation which may or may not be infinite.