Maint: common GetProtocol for OpenVPN+Wireguard providers

internal/provider/utils/protocol.go

@@ -0,0 +1,13 @@
+package utils
+
+import (
+	"github.com/qdm12/gluetun/internal/configuration"
+	"github.com/qdm12/gluetun/internal/constants"
+)
+
+func GetProtocol(selection configuration.ServerSelection) (protocol string) {
+	if selection.VPN == constants.OpenVPN && selection.OpenVPN.TCP {
+		return constants.TCP
+	}
+	return constants.UDP
+}