initial code

internal/provider/utils/port.go

@@ -6,29 +6,44 @@ import (
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/constants"
 	"github.com/qdm12/gluetun/internal/constants/vpn"
+	"github.com/qdm12/gluetun/internal/models"
 )
 
-func getPort(selection settings.ServerSelection,
+func getPort(selection settings.ServerSelection, server models.Server,
 	defaultOpenVPNTCP, defaultOpenVPNUDP, defaultWireguard uint16,
 ) (port uint16) {
 	switch selection.VPN {
 	case vpn.Wireguard:
 		customPort := *selection.Wireguard.EndpointPort
 		if customPort > 0 {
+			// Note: servers filtering ensures the custom port is within the
+			// server ports defined if any is set.
 			return customPort
 		}
+
+		if len(server.PortsUDP) > 0 {
+			defaultWireguard = server.PortsUDP[0]
+		}
 		checkDefined("Wireguard", defaultWireguard)
 		return defaultWireguard
 	default: // OpenVPN
 		customPort := *selection.OpenVPN.CustomPort
 		if customPort > 0 {
+			// Note: servers filtering ensures the custom port is within the
+			// server ports defined if any is set.
 			return customPort
 		}
 		if selection.OpenVPN.Protocol == constants.TCP {
+			if len(server.PortsTCP) > 0 {
+				defaultOpenVPNTCP = server.PortsTCP[0]
+			}
 			checkDefined("OpenVPN TCP", defaultOpenVPNTCP)
 			return defaultOpenVPNTCP
 		}
 
+		if len(server.PortsUDP) > 0 {
+			defaultOpenVPNUDP = server.PortsUDP[0]
+		}
 		checkDefined("OpenVPN UDP", defaultOpenVPNUDP)
 		return defaultOpenVPNUDP
 	}