From: Sergey M․ <dstftw@gmail.com>
Date: Thu, 14 Sep 2017 16:19:53 +0000 (+0700)
Subject: [downloader/fragment] Restart inconsistent incomplete fragment downloads (#13731)
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=youtube-dl;a=commitdiff_plain;h=e7c3e33456e155106ad08347d8ab9a2ecd0c8a11

[downloader/fragment] Restart inconsistent incomplete fragment downloads (#13731)
---

diff --git a/youtube_dl/downloader/fragment.py b/youtube_dl/downloader/fragment.py
index bccc8ecc1..6f6fb4a77 100644
--- a/youtube_dl/downloader/fragment.py
+++ b/youtube_dl/downloader/fragment.py
@@ -151,10 +151,15 @@ class FragmentFD(FileDownloader):
         if self.__do_ytdl_file(ctx):
             if os.path.isfile(encodeFilename(self.ytdl_filename(ctx['filename']))):
                 self._read_ytdl_file(ctx)
+                if ctx['fragment_index'] > 0 and resume_len == 0:
+                    self.report_error(
+                        'Inconsistent state of incomplete fragment download. '
+                        'Restarting from the beginning...')
+                    ctx['fragment_index'] = resume_len = 0
+                    self._write_ytdl_file(ctx)
             else:
                 self._write_ytdl_file(ctx)
-            if ctx['fragment_index'] > 0:
-                assert resume_len > 0
+                assert ctx['fragment_index'] == 0
 
         dest_stream, tmpfilename = sanitize_open(tmpfilename, open_mode)