chore: simplify provider GetConnection

internal/provider/ipvanish/connection.go

@@ -2,34 +2,12 @@ package ipvanish
 
 import (
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/internal/constants"
 	"github.com/qdm12/gluetun/internal/models"
 	"github.com/qdm12/gluetun/internal/provider/utils"
 )
 
 func (i *Ipvanish) GetConnection(selection settings.ServerSelection) (
 	connection models.Connection, err error) {
-	const port = 443
-	const protocol = constants.UDP
-
-	servers, err := utils.FilterServers(i.servers, selection)
-	if err != nil {
-		return connection, err
-	}
-
-	var connections []models.Connection
-	for _, server := range servers {
-		for _, IP := range server.IPs {
-			connection := models.Connection{
-				Type:     selection.VPN,
-				IP:       IP,
-				Port:     port,
-				Protocol: protocol,
-				Hostname: server.Hostname,
-			}
-			connections = append(connections, connection)
-		}
-	}
-
-	return utils.PickConnection(connections, selection, i.randSource)
+	defaults := utils.NewConnectionDefaults(0, 443, 0) //nolint:gomnd
+	return utils.GetConnection(i.servers, selection, defaults, i.randSource)
 }