fetch new uploads faster instead of failing

main.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"mime"
 	"net/http"
 	"os"
 	"os/user"
@@ -93,13 +94,30 @@ func view(c *gin.Context) {
 	channelShortID := ""
 	var claim *chainquery.Claim
 	var err error
+	contentType := mime.TypeByExtension(filepath.Ext(claimNameWithExt))
+	inUploads, err := isFileInDir(uploadsDir, claimNameWithExt)
+	if err != nil {
+		logrus.Errorln(errors.FullTrace(err))
+		_ = c.AbortWithError(http.StatusInternalServerError, err)
+		return
+	}
+	inDownloads := false
+	if !inUploads {
+		inDownloads, err = isFileInDir(downloadsDir, claimNameWithExt)
+		if err != nil {
+			logrus.Errorln(errors.FullTrace(err))
+			_ = c.AbortWithError(http.StatusInternalServerError, err)
+			return
+		}
+	}
+	mustDownload := !inUploads && !inDownloads
+	if mustDownload {
 		if strings.Contains(id, "@") {
 			parts := strings.Split(id, ":")
 			channelName = parts[0]
 			if len(parts) > 1 {
 				channelShortID = parts[1]
 			}
-
 			claim, err = cqApi.ResolveClaimByChannel(claimName, channelShortID, channelName)
 		} else {
 			claim, err = cqApi.ResolveClaim(claimName, id)
@@ -117,23 +135,9 @@ func view(c *gin.Context) {
 			c.Redirect(301, fmt.Sprintf("https://cdn.lbryplayer.xyz/content/claims/%s/%s/stream", claimName, id))
 			return
 		}
+		contentType = claim.ContentType
+	}
 
-	inUploads, err := isFileInDir(uploadsDir, claimNameWithExt)
-	if err != nil {
-		logrus.Errorln(errors.FullTrace(err))
-		_ = c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-	inDownloads := false
-	if !inUploads {
-		inDownloads, err = isFileInDir(downloadsDir, claimNameWithExt)
-		if err != nil {
-			logrus.Errorln(errors.FullTrace(err))
-			_ = c.AbortWithError(http.StatusInternalServerError, err)
-			return
-		}
-	}
-	mustDownload := !inUploads && !inDownloads
 	if mustDownload {
 		err = downloadStream(claim.SdHash, claimNameWithExt)
 		if err != nil {
@@ -166,7 +170,7 @@ func view(c *gin.Context) {
 		_ = c.AbortWithError(http.StatusInternalServerError, errors.Err(err))
 		return
 	}
-	c.DataFromReader(http.StatusOK, f.Size(), claim.ContentType, reader, nil)
+	c.DataFromReader(http.StatusOK, f.Size(), contentType, reader, nil)
 	return
 
 }