[utils] restart download if server does not support byte ranges
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@ -57,6 +57,20 @@ class HttpFD(FileDownloader):
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# Establish connection
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try:
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data = self.ydl.urlopen(request)
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if resume_len > 0:
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content_range = data.headers.get('Content-Range')
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if content_range:
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content_range_m = re.search(r'bytes (\d+)-', content_range)
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if content_range_m:
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# Content-Range is correct - go on
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if resume_len == int(content_range_m.group(1)):
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break
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# Content-Range is invalid - wipe the file and do entire redownload
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resume_len = 0
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open_mode = 'wb'
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break
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except (compat_urllib_error.HTTPError, ) as err:
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if (err.code < 500 or err.code >= 600) and err.code != 416:
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