Add configs

internal/universal/get.go

@@ -1,6 +1,7 @@
 package universal
 
 import (
+	"fmt"
 	"io"
 	"net/http"
 	"net/url"
@@ -79,12 +80,14 @@ func (gf *GetFile) HandleGetRequest(w http.ResponseWriter, r *http.Request, t *i
 	link := file.Link
 
 	if download, exists := t.DownloadCache.Get(link); exists {
-		if c.ShouldServeFromRclone() {
+		if c.ShouldServeFromRclone() && t.Api.CanFetchFirstByte(download.Download) {
 			redirect(w, r, download.Download, c)
 		} else {
-			gf.streamFileToResponse(file, download.Download, w, r, t, c, log)
+			err := gf.streamCachedLinkToResponse(download.Download, w, r, t, c, log)
+			if err == nil {
+				return
+			}
 		}
-		return
 	}
 
 	resp := t.UnrestrictUntilOk(link)
@@ -121,6 +124,39 @@ func (gf *GetFile) HandleGetRequest(w http.ResponseWriter, r *http.Request, t *i
 	}
 }
 
+func (gf *GetFile) streamCachedLinkToResponse(url string, w http.ResponseWriter, r *http.Request, torMgr *intTor.TorrentManager, cfg config.ConfigInterface, log *zap.SugaredLogger) error {
+	// Create a new request for the file download.
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		return fmt.Errorf("file is not available")
+	}
+
+	// copy range header if it exists
+	if r.Header.Get("Range") != "" {
+		req.Header.Add("Range", r.Header.Get("Range"))
+	}
+
+	resp, err := gf.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("file is not available")
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusPartialContent {
+		return fmt.Errorf("file is not available")
+	}
+
+	for k, vv := range resp.Header {
+		for _, v := range vv {
+			w.Header().Add(k, v)
+		}
+	}
+
+	buf := make([]byte, cfg.GetNetworkBufferSize())
+	io.CopyBuffer(w, resp.Body, buf)
+	return nil
+}
+
 func (gf *GetFile) streamFileToResponse(file *intTor.File, url string, w http.ResponseWriter, r *http.Request, torMgr *intTor.TorrentManager, cfg config.ConfigInterface, log *zap.SugaredLogger) {
 	// Create a new request for the file download.
 	req, err := http.NewRequest(http.MethodGet, url, nil)