[downloader/http] Simplify

[youtube-dl] / youtube_dl / downloader / http.py

diff --git a/youtube_dl/downloader/http.py b/youtube_dl/downloader/http.py
index ceacb8522b79ec4e4d3fbef83e242ed457be4a7c..0862e90bbb0a5bbc5f6414e6907cdc913d0944e6 100644 (file)
--- a/youtube_dl/downloader/http.py
+++ b/youtube_dl/downloader/http.py
@@ -4,9 +4,9 @@ import errno
 import os
 import socket
 import time
+import re
 
 from .common import FileDownloader
-from .dash import DashSegmentsFD
 from ..compat import (
     compat_urllib_request,
     compat_urllib_error,
@@ -20,9 +20,6 @@ from ..utils import (
 
 class HttpFD(FileDownloader):
     def real_download(self, filename, info_dict):
-        if info_dict.get('initialization_url') and list(filter(None, info_dict.get('segment_urls', []))):
-            return DashSegmentsFD(self.ydl, self.params).real_download(filename, info_dict)
-
         url = info_dict['url']
         tmpfilename = self.temp_name(filename)
         stream = None
@@ -61,6 +58,16 @@ class HttpFD(FileDownloader):
             # Establish connection
             try:
                 data = self.ydl.urlopen(request)
+                if resume_len > 0:
+                    content_range = data.headers.get('Content-Range')
+                    if content_range:
+                        content_range_m = re.search(r'bytes (\d+)-', content_range)
+                        # Content-Range is correct - go on
+                    if content_range_m and resume_len == int(content_range_m.group(1)):
+                        break
+                    # Content-Range is invalid - wipe the file and do entire redownload
+                    resume_len = 0
+                    open_mode = 'wb'
                 break
             except (compat_urllib_error.HTTPError, ) as err:
                 if (err.code < 500 or err.code >= 600) and err.code != 416: