Maint: common no port forwarding implementation

internal/provider/utils/noportforward.go

@@ -0,0 +1,32 @@
+package utils
+
+import (
+	"context"
+	"net"
+	"net/http"
+
+	"github.com/qdm12/gluetun/internal/firewall"
+	"github.com/qdm12/golibs/logging"
+)
+
+type NoPortForwarder interface {
+	PortForward(ctx context.Context, client *http.Client,
+		pfLogger logging.Logger, gateway net.IP, portAllower firewall.PortAllower,
+		syncState func(port uint16) (pfFilepath string))
+}
+
+type NoPortForwarding struct {
+	providerName string
+}
+
+func NewNoPortForwarding(providerName string) *NoPortForwarding {
+	return &NoPortForwarding{
+		providerName: providerName,
+	}
+}
+
+func (n *NoPortForwarding) PortForward(ctx context.Context, client *http.Client,
+	pfLogger logging.Logger, gateway net.IP, portAllower firewall.PortAllower,
+	syncState func(port uint16) (pfFilepath string)) {
+	panic("custom port forwarding obtention is not supported for " + n.providerName)
+}