fix: http download fail (#61)

pkg/download/downloader.go

@@ -102,7 +102,14 @@ func (d *Downloader) Setup() error {
 
 						current := task.fetcher.Progress().TotalDownloaded()
 						task.Progress.Used = task.timer.Used()
-						task.Progress.Speed = current - task.Progress.Downloaded
+						downloaded := current - task.Progress.Downloaded
+						usedTime := float64(d.refreshInterval) / 1000
+						if downloaded == 0 {
+							task.Progress.Speed = int64(float64(task.Progress.Speed) / (usedTime * 1.55))
+						} else {
+							usedTime := float64(d.refreshInterval) / 1000
+							task.Progress.Speed = int64(float64(current-task.Progress.Downloaded) / usedTime)
+						}
 						task.Progress.Downloaded = current
 						d.emit(EventKeyProgress, task)
 

pkg/download/model.go

@@ -34,7 +34,7 @@ func (cfg *DownloaderConfig) Init() *DownloaderConfig {
 	}
 
 	if cfg.RefreshInterval == 0 {
-		cfg.RefreshInterval = 1000
+		cfg.RefreshInterval = 500
 	}
 	return cfg
 }