Improve casting resume behavior

app/model.go

@@ -7,6 +7,8 @@ import (
 	"io"
 	"math"
 	"net/http"
+	"strings"
+	"time"
 )
 
 type Model struct {
@@ -14,9 +16,11 @@ type Model struct {
 	DiscoveredDevices []fcast.DiscoveredHost
 	Connection        *fcast.Connection
 	EventManager      *fcast.EventManager
+	DeviceName        string
 	Time              float32
 	Length            float32
 	Volume            float32
+	IsReconnecting    bool
 }
 
 func (m *Model) DiscoverDevices() ([]string, error) {
@@ -47,10 +51,29 @@ func (m *Model) ConnectToDevice(name string) error {
 		return err
 	}
 	m.Connection = connection
+	m.DeviceName = name
 	return nil
 }
 
-func (m *Model) StartCast(mediaURL string) error {
+func (m *Model) Cast(selectedDevice, mediaURL string) error {
+	err := m.doCast(selectedDevice, mediaURL)
+	if err != nil {
+		if errors.Is(err, io.EOF) || strings.Contains(err.Error(), "software caused connection abort") {
+			m.Controller.ShowReconnecting(true)
+			time.Sleep(500 * time.Millisecond)
+			return m.Cast(selectedDevice, mediaURL)
+		}
+	}
+	m.Controller.ShowReconnecting(false)
+	return err
+}
+
+func (m *Model) doCast(selectedDevice, mediaURL string) error {
+
+	err := m.ConnectToDevice(selectedDevice)
+	if err != nil {
+		return fmt.Errorf("error connecting to device %v", err)
+	}
 
 	m.EventManager = &fcast.EventManager{}
 
@@ -81,6 +104,13 @@ func (m *Model) StartCast(mediaURL string) error {
 		if err != nil {
 			return err
 		}
+	} else {
+		m.Volume = 1
+	}
+
+	err = m.Connection.SendMessage(&fcast.PingMessage{})
+	if err == nil {
+		m.Controller.ShowReconnecting(false)
 	}
 
 	return m.Connection.ListenForMessages(m.EventManager)