hotfix(protonvpn): fix free detection and update p2p->port_forward

internal/provider/protonvpn/updater/api.go

@@ -24,6 +24,7 @@ type logicalServer struct {
 	City        *string          `json:"City"`
 	Servers     []physicalServer `json:"Servers"`
 	Features    uint16           `json:"Features"`
+	Tier        *uint8           `json:"Tier,omitempty"`
 }
 
 type physicalServer struct {
@@ -31,7 +32,6 @@ type physicalServer struct {
 	ExitIP  netip.Addr `json:"ExitIP"`
 	Domain  string     `json:"Domain"`
 	Status  uint8      `json:"Status"`
-	Tier    *uint8     `json:"Tier,omitempty"`
 }
 
 func fetchAPI(ctx context.Context, client *http.Client) (

internal/provider/protonvpn/updater/servers.go

@@ -48,6 +48,15 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 			// ipv6: featuresBits&16 != 0, - unused.
 		}
 
+		//nolint:lll
+		// See https://github.com/ProtonVPN/protonvpn-nm-lib/blob/31d5f99fbc89274e4e977a11e7432c0eab5a3ef8/protonvpn_nm_lib/enums.py#L56-L62
+		free := false
+		if logicalServer.Tier == nil {
+			u.warner.Warn("tier field not set for server " + logicalServer.Name)
+		} else if *logicalServer.Tier == 0 {
+			free = true
+		}
+
 		for _, physicalServer := range logicalServer.Servers {
 			if physicalServer.Status == 0 { // disabled so skip server
 				u.warner.Warn("ignoring server " + physicalServer.Domain + " with status 0")
@@ -57,15 +66,6 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 			hostname := physicalServer.Domain
 			entryIP := physicalServer.EntryIP
 
-			//nolint:lll
-			// See https://github.com/ProtonVPN/protonvpn-nm-lib/blob/31d5f99fbc89274e4e977a11e7432c0eab5a3ef8/protonvpn_nm_lib/enums.py#L56-L62
-			free := false
-			if physicalServer.Tier == nil {
-				u.warner.Warn("tier field not set for server " + hostname)
-			} else if *physicalServer.Tier == 0 {
-				free = true
-			}
-
 			// Note: for multi-hop use the server name or hostname
 			// instead of the country
 			countryCode := logicalServer.ExitCountry