correctly distinguish user/pass auth errors from other connectivity errors again

backend/mediaprovider/jellyfin/jellyfinmediaprovider.go

@@ -23,6 +23,17 @@ type JellyfinServer struct {
 	jellyfin.Client
 }
 
+func (j *JellyfinServer) Login(user, pass string) mediaprovider.LoginResponse {
+	if _, err := j.Ping(); err != nil {
+		return mediaprovider.LoginResponse{Error: err}
+	}
+	err := j.Client.Login(user, pass)
+	return mediaprovider.LoginResponse{
+		Error:       err,
+		IsAuthError: err != nil,
+	}
+}
+
 func (j *JellyfinServer) MediaProvider() mediaprovider.MediaProvider {
 	return newJellyfinMediaProvider(&j.Client)
 }

backend/mediaprovider/mediaprovider.go

@@ -61,8 +61,13 @@ type Favorites struct {
 	Tracks  []*Track
 }
 
+type LoginResponse struct {
+	Error       error
+	IsAuthError bool
+}
+
 type Server interface {
-	Login(username, password string) error
+	Login(username, password string) LoginResponse
 	MediaProvider() MediaProvider
 }
 

backend/mediaprovider/subsonic/subsonicserver.go

@@ -9,9 +9,13 @@ type SubsonicServer struct {
 	subsonicCli.Client
 }
 
-func (s *SubsonicServer) Login(username, password string) error {
+func (s *SubsonicServer) Login(username, password string) mediaprovider.LoginResponse {
 	s.User = username
-	return s.Client.Authenticate(password)
+	err := s.Client.Authenticate(password)
+	return mediaprovider.LoginResponse{
+		Error:       err,
+		IsAuthError: err == subsonicCli.ErrAuthenticationFailure,
+	}
 }
 
 func (s *SubsonicServer) MediaProvider() mediaprovider.MediaProvider {

backend/servermanager.go

@@ -199,12 +199,16 @@ func (s *ServerManager) connect(connection ServerConnection, password string) (m
 			},
 		}
 	}
+	var authError error
 	pingChan := make(chan bool, 2) // false for primary hostname, true for alternate
 	pingFunc := func(delay time.Duration, cli mediaprovider.Server, val bool) {
 		<-time.After(delay)
-		if err := cli.Login(connection.Username, password); err == nil {
-			pingChan <- val
+		resp := cli.Login(connection.Username, password)
+		if resp.Error != nil && !resp.IsAuthError {
+			return
 		}
+		authError = resp.Error
+		pingChan <- val // reached the server
 	}
 	go pingFunc(0, cli, false)
 	if connection.AltHostname != "" {
@@ -218,8 +222,8 @@ func (s *ServerManager) connect(connection ServerConnection, password string) (m
 		return nil, ErrUnreachable
 	case altPing := <-pingChan:
 		if altPing {
-			return altCli, nil
+			return altCli, authError
 		}
-		return cli, nil
+		return cli, authError
 	}
 }

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/deluan/sanitize v0.0.0-20230310221930-6e18967d9fc1
 	github.com/dweymouth/go-jellyfin v0.0.0-20231114014232-1e011bb03a9f
 	github.com/dweymouth/go-mpv v0.0.0-20230406003141-7f1858e503ee
-	github.com/dweymouth/go-subsonic v0.0.0-20231105161622-54b5aec28363
+	github.com/dweymouth/go-subsonic v0.0.0-20231115012731-a3d1f90274c1
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/godbus/dbus/v5 v5.1.0
 	github.com/google/uuid v1.3.0

go.sum

@@ -75,8 +75,8 @@ github.com/dweymouth/go-jellyfin v0.0.0-20231114014232-1e011bb03a9f h1:sJY4MjrNa
 github.com/dweymouth/go-jellyfin v0.0.0-20231114014232-1e011bb03a9f/go.mod h1:BMwS4vdjEYf1gmjPGSKCzWP/I6YlI6fkefJ9nsjBjaU=
 github.com/dweymouth/go-mpv v0.0.0-20230406003141-7f1858e503ee h1:ZGyJ6wp7CAfT31BugypcF/TPKEy2RrGR9JFq1JOjOpY=
 github.com/dweymouth/go-mpv v0.0.0-20230406003141-7f1858e503ee/go.mod h1:Ov0ieN90M7i+0k3OxhA/g1dozGs+UcPHDsMKqPgRDk0=
-github.com/dweymouth/go-subsonic v0.0.0-20231105161622-54b5aec28363 h1:MIH7MAWWPPVRKEKxz+RJubn+ycyQPimHn1Zvoxs1KRI=
-github.com/dweymouth/go-subsonic v0.0.0-20231105161622-54b5aec28363/go.mod h1:dVriurACA/XTnE7BgSOTapYOtxMq7jTOVExrIbwi84c=
+github.com/dweymouth/go-subsonic v0.0.0-20231115012731-a3d1f90274c1 h1:1I5/hlV4lQ0B0NdBZvwWSqL8hvvKhRRbJK6fGsxFSLs=
+github.com/dweymouth/go-subsonic v0.0.0-20231115012731-a3d1f90274c1/go.mod h1:OWtcumdQsan8uM6wmx6PqKhldaCthH10CQ+vb+94kzo=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=